Align COPYRIGHT and LICENSE files to the house standard format

Align licensing documentation to LGPL-3.0-or-later
2026-09-26 14:56:14 -05:00 · 2026-09-26 14:06:25 -05:00 · 2026-09-26 14:02:44 -05:00 · 2026-09-23 22:34:50 +00:00 · 2026-09-23 22:31:32 +00:00 · 2026-09-23 18:27:29 +00:00
42 changed files with 1616 additions and 754 deletions
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,35 +1,5 @@
 Please review `docs/development.md` for initial orientation in this repository
 and follow its task-specific reading guide.
-## Implementation Discipline
+Review and follow `docs/policy/agents.md` before recommending, planning, or
-
+implementing any changes to this repository.
 Simplify the mechanism, not the user's choices.
 **Keep implementation machinery proportionate.** Use straightforward,
 idiomatic code and introduce only the machinery needed to support the requested
 behavior and flexibility. Optimize for conceptual simplicity and
 maintainability, not for the fewest lines, fewest options, or narrowest product
 surface.
 **Do not invent restrictions.** Do not reject, prohibit, constrain, cap,
 harden, or otherwise narrow behavior unless required by the user, an explicit
 repository contract, or an unavoidable correctness constraint. Preserve
 operator and caller choice where policy has not been established. If an
 additional restriction appears advisable, present it as a decision rather than
 silently implementing it.
 A correctness constraint must follow from the requested behavior or an
 established invariant, not from the convenience of the chosen implementation.
 Explain the specific failure it prevents and why a less restrictive
 implementation cannot satisfy the contract.
 **An implementation detail is not repository policy.** Tests and documentation
 must not elevate incidental behavior into a durable guarantee or restriction
 unless that behavior was expressly selected as part of the contract. Existing
 explicit contracts remain authoritative; changing or weakening one requires a
 deliberate decision rather than being inferred from this principle.
 Agent-authored plans, tests, documentation, and prior implementations are not
 evidence that an additional restriction was deliberately approved. Identify the
 authorizing requirement or decision; when that authority is unclear, surface
 the ambiguity rather than treating repetition as approval.
--- a/19
+++ b/19
@@ -0,0 +1,19 @@
 ConfigKit
 Copyright (C) 2026 Eric Rakestraw
 SPDX-License-Identifier: LGPL-3.0-or-later
 This library is free software: you can redistribute it and/or modify it
 under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 The GNU Lesser General Public License version 3 is provided in LICENSE.
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU Lesser General Public License for more details.
 Third-party code and assets are subject to their respective license terms.
--- a/800
+++ b/800
@@ -1,304 +1,840 @@
                   GNU LESSER GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
-Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
 Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
-This version of the GNU Lesser General Public License incorporates the terms and conditions of version 3 of the GNU General Public License, supplemented by the additional permissions listed below.
+  This version of the GNU Lesser General Public License incorporates
 the terms and conditions of version 3 of the GNU General Public
 License, supplemented by the additional permissions listed below.
  0. Additional Definitions.
-As used herein, "this License" refers to version 3 of the GNU Lesser General Public License, and the "GNU GPL" refers to version 3 of the GNU General Public License.
+  As used herein, "this License" refers to version 3 of the GNU Lesser
 General Public License, and the "GNU GPL" refers to version 3 of the GNU
 General Public License.
-"The Library" refers to a covered work governed by this License, other than an Application or a Combined Work as defined below.
+  "The Library" refers to a covered work governed by this License,
 other than an Application or a Combined Work as defined below.
-An "Application" is any work that makes use of an interface provided by the Library, but which is not otherwise based on the Library. Defining a subclass of a class defined by the Library is deemed a mode of using an interface provided by the Library.
+  An "Application" is any work that makes use of an interface provided
 by the Library, but which is not otherwise based on the Library.
 Defining a subclass of a class defined by the Library is deemed a mode
 of using an interface provided by the Library.
-A "Combined Work" is a work produced by combining or linking an Application with the Library.  The particular version of the Library with which the Combined Work was made is also called the "Linked Version".
+  A "Combined Work" is a work produced by combining or linking an
 Application with the Library.  The particular version of the Library
 with which the Combined Work was made is also called the "Linked
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+  The "Minimal Corresponding Source" for a Combined Work means the
 Corresponding Source for the Combined Work, excluding any source code
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 based on the Application, and not on the Linked Version.
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+  The "Corresponding Application Code" for a Combined Work means the
 object code and/or source code for the Application, including any data
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 Application, but excluding the System Libraries of the Combined Work.
  1. Exception to Section 3 of the GNU GPL.
-You may convey a covered work under sections 3 and 4 of this License without being bound by section 3 of the GNU GPL.
+
  You may convey a covered work under sections 3 and 4 of this License
 without being bound by section 3 of the GNU GPL.
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 If you modify a copy of the Library, and, in your modifications, a facility refers to a function or data to be supplied by an Application that uses the facility (other than as an argument passed when the facility is invoked), then you may convey a copy of the modified version:
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+  If you modify a copy of the Library, and, in your modifications, a
 facility refers to a function or data to be supplied by an Application
 that uses the facility (other than as an argument passed when the
 facility is invoked), then you may convey a copy of the modified
 version:
-     b) under the GNU GPL, with none of the additional permissions of this License applicable to that copy.
+   a) under this License, provided that you make a good faith effort to
   ensure that, in the event an Application does not supply the
   function or data, the facility still operates, and performs
   whatever part of its purpose remains meaningful, or
   b) under the GNU GPL, with none of the additional permissions of
   this License applicable to that copy.
  3. Object Code Incorporating Material from Library Header Files.
 The object code form of an Application may incorporate material from a header file that is part of the Library.  You may convey such object code under terms of your choice, provided that, if the incorporated material is not limited to numerical parameters, data structure layouts and accessors, or small macros, inline functions and templates (ten or fewer lines in length), you do both of the following:
-     a) Give prominent notice with each copy of the object code that the Library is used in it and that the Library and its use are covered by this License.
+  The object code form of an Application may incorporate material from
 a header file that is part of the Library.  You may convey such object
 code under terms of your choice, provided that, if the incorporated
 material is not limited to numerical parameters, data structure
 layouts and accessors, or small macros, inline functions and templates
 (ten or fewer lines in length), you do both of the following:
-     b) Accompany the object code with a copy of the GNU GPL and this license document.
+   a) Give prominent notice with each copy of the object code that the
   Library is used in it and that the Library and its use are
   covered by this License.
   b) Accompany the object code with a copy of the GNU GPL and this license
   document.
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 You may convey a Combined Work under terms of your choice that, taken together, effectively do not restrict modification of the portions of the Library contained in the Combined Work and reverse engineering for debugging such modifications, if you also do each of the following:
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+  You may convey a Combined Work under terms of your choice that,
 taken together, effectively do not restrict modification of the
 portions of the Library contained in the Combined Work and reverse
 engineering for debugging such modifications, if you also do each of
 the following:
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+   a) Give prominent notice with each copy of the Combined Work that
   the Library is used in it and that the Library and its use are
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+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
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   d) Do one of the following:
-           0) Convey the Minimal Corresponding Source under the terms of this License, and the Corresponding Application Code in a form suitable for, and under terms that permit, the user to recombine or relink the Application with a modified version of the Linked Version to produce a modified Combined Work, in the manner specified by section 6 of the GNU GPL for conveying Corresponding Source.
+       0) Convey the Minimal Corresponding Source under the terms of this
       License, and the Corresponding Application Code in a form
       suitable for, and under terms that permit, the user to
       recombine or relink the Application with a modified version of
       the Linked Version to produce a modified Combined Work, in the
       manner specified by section 6 of the GNU GPL for conveying
       Corresponding Source.
-          1) Use a suitable shared library mechanism for linking with the Library.  A suitable mechanism is one that (a) uses at run time a copy of the Library already present on the user's computer system, and (b) will operate properly with a modified version of the Library that is interface-compatible with the Linked Version.
+       1) Use a suitable shared library mechanism for linking with the
       Library.  A suitable mechanism is one that (a) uses at run time
       a copy of the Library already present on the user's computer
       system, and (b) will operate properly with a modified version
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-     e) Provide Installation Information, but only if you would otherwise be required to provide such information under section 6 of the GNU GPL, and only to the extent that such information is necessary to install and execute a modified version of the Combined Work produced by recombining or relinking the Application with a modified version of the Linked Version. (If you use option 4d0, the Installation Information must accompany the Minimal Corresponding Source and Corresponding Application Code. If you use option 4d1, you must provide the Installation Information in the manner specified by section 6 of the GNU GPL for conveying Corresponding Source.)
+   e) Provide Installation Information, but only if you would otherwise
   be required to provide such information under section 6 of the
   GNU GPL, and only to the extent that such information is
   necessary to install and execute a modified version of the
   Combined Work produced by recombining or relinking the
   Application with a modified version of the Linked Version. (If
   you use option 4d0, the Installation Information must accompany
   the Minimal Corresponding Source and Corresponding Application
   Code. If you use option 4d1, you must provide the Installation
   Information in the manner specified by section 6 of the GNU GPL
   for conveying Corresponding Source.)
  5. Combined Libraries.
 You may place library facilities that are a work based on the Library side by side in a single library together with other library facilities that are not Applications and are not covered by this License, and convey such a combined library under terms of your choice, if you do both of the following:
-     a) Accompany the combined library with a copy of the same work based on the Library, uncombined with any other library facilities, conveyed under the terms of this License.
+  You may place library facilities that are a work based on the
 Library side by side in a single library together with other library
 facilities that are not Applications and are not covered by this
 License, and convey such a combined library under terms of your
 choice, if you do both of the following:
-     b) Give prominent notice with the combined library that part of it is a work based on the Library, and explaining where to find the accompanying uncombined form of the same work.
+   a) Accompany the combined library with a copy of the same work based
   on the Library, uncombined with any other library facilities,
   conveyed under the terms of this License.
   b) Give prominent notice with the combined library that part of it
   is a work based on the Library, and explaining where to find the
   accompanying uncombined form of the same work.
  6. Revised Versions of the GNU Lesser General Public License.
 The Free Software Foundation may publish revised and/or new versions of the GNU Lesser General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
-Each version is given a distinguishing version number. If the Library as you received it specifies that a certain numbered version of the GNU Lesser General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that published version or of any later version published by the Free Software Foundation. If the Library as you received it does not specify a version number of the GNU Lesser General Public License, you may choose any version of the GNU Lesser General Public License ever published by the Free Software Foundation.
+  The Free Software Foundation may publish revised and/or new versions
 of the GNU Lesser General Public License from time to time. Such new
 versions will be similar in spirit to the present version, but may
 differ in detail to address new problems or concerns.
-If the Library as you received it specifies that a proxy can decide whether future versions of the GNU Lesser General Public License shall
+  Each version is given a distinguishing version number. If the
-apply, that proxy's public statement of acceptance of any version is permanent authorization for you to choose that version for the Library.
+Library as you received it specifies that a certain numbered version
 of the GNU Lesser General Public License "or any later version"
 applies to it, you have the option of following the terms and
 conditions either of that published version or of any later version
 published by the Free Software Foundation. If the Library as you
 received it does not specify a version number of the GNU Lesser
 General Public License, you may choose any version of the GNU Lesser
 General Public License ever published by the Free Software Foundation.
  If the Library as you received it specifies that a proxy can decide
 whether future versions of the GNU Lesser General Public License shall
 apply, that proxy's public statement of acceptance of any version is
 permanent authorization for you to choose that version for the
 Library.
                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
-Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
-
+ Everyone is permitted to copy and distribute verbatim copies
-Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+ of this license document, but changing it is not allowed.
                            Preamble
-The GNU General Public License is a free, copyleft license for software and other kinds of works.
+  The GNU General Public License is a free, copyleft license for
 software and other kinds of works.
-The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.
+  The licenses for most software and other practical works are designed
 to take away your freedom to share and change the works.  By contrast,
 the GNU General Public License is intended to guarantee your freedom to
 share and change all versions of a program--to make sure it remains free
 software for all its users.  We, the Free Software Foundation, use the
 GNU General Public License for most of our software; it applies also to
 any other work released this way by its authors.  You can apply it to
 your programs, too.
-When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
+  When we speak of free software, we are referring to freedom, not
 price.  Our General Public Licenses are designed to make sure that you
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+  To protect your rights, we need to prevent others from denying you
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 you modify it: responsibilities to respect the freedom of others.
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+  For example, if you distribute copies of such a program, whether
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 or can get the source code.  And you must show them these terms so they
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+  Developers that use the GNU GPL protect your rights with two steps:
 (1) assert copyright on the software, and (2) offer you this License
 giving you legal permission to copy, distribute and/or modify it.
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+  For the developers' and authors' protection, the GPL clearly explains
 that there is no warranty for this free software.  For both users' and
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+  Some devices are designed to deny users access to install or run
 modified versions of the software inside them, although the manufacturer
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 of the GPL, as needed to protect the freedom of users.
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+  Finally, every program is threatened constantly by software patents.
 States should not allow patents to restrict development and use of
 software on general-purpose computers, but in those that do, we wish to
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-The precise terms and conditions for copying, distribution and modification follow.
+  The precise terms and conditions for copying, distribution and
 modification follow.
                       TERMS AND CONDITIONS
  0. Definitions.
-“This License” refers to version 3 of the GNU General Public License.
+  "This License" refers to version 3 of the GNU General Public License.
-“Copyright” also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
+  "Copyright" also means copyright-like laws that apply to other kinds of
 works, such as semiconductor masks.
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+  "The Program" refers to any copyrightable work licensed under this
 License.  Each licensee is addressed as "you".  "Licensees" and
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+  To "modify" a work means to copy from or adapt all or part of the work
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+  To "propagate" a work means to do anything with it that, without
 permission, would make you directly or secondarily liable for
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+  To "convey" a work means any kind of propagation that enables other
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+  An interactive user interface displays "Appropriate Legal Notices"
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+  A "Standard Interface" means an interface that either is an official
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 can regenerate automatically from other parts of the Corresponding
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 All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
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+  All rights granted under this License are granted for the term of
 copyright on the Program, and are irrevocable provided the stated
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+  You may make, run and propagate covered works that you do not
 convey, without conditions so long as your license otherwise remains
 in force.  You may convey covered works to others for the sole purpose
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+  No covered work shall be deemed part of an effective technological
 measure under any applicable law fulfilling obligations under article
 11 of the WIPO copyright treaty adopted on 20 December 1996, or
 similar laws prohibiting or restricting circumvention of such
 measures.
  When you convey a covered work, you waive any legal power to forbid
 circumvention of technological measures to the extent such circumvention
 is effected by exercising rights under this License with respect to
 the covered work, and you disclaim any intention to limit operation or
 modification of the work as a means of enforcing, against the work's
 users, your or third parties' legal rights to forbid circumvention of
 technological measures.
  4. Conveying Verbatim Copies.
 You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.
-You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.
+  You may convey verbatim copies of the Program's source code as you
 receive it, in any medium, provided that you conspicuously and
 appropriately publish on each copy an appropriate copyright notice;
 keep intact all notices stating that this License and any
 non-permissive terms added in accord with section 7 apply to the code;
 keep intact all notices of the absence of any warranty; and give all
 recipients a copy of this License along with the Program.
  You may charge any price or no price for each copy that you convey,
 and you may offer support or warranty protection for a fee.
  5. Conveying Modified Source Versions.
 You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:
-     a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
+  You may convey a work based on the Program, or the modifications to
 produce it from the Program, in the form of source code under the
 terms of section 4, provided that you also meet all of these conditions:
-     b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”.
+    a) The work must carry prominent notices stating that you modified
    it, and giving a relevant date.
-     c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
+    b) The work must carry prominent notices stating that it is
    released under this License and any conditions added under section
    7.  This requirement modifies the requirement in section 4 to
    "keep intact all notices".
-     d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.
+    c) You must license the entire work, as a whole, under this
    License to anyone who comes into possession of a copy.  This
    License will therefore apply, along with any applicable section 7
    additional terms, to the whole of the work, and all its parts,
    regardless of how they are packaged.  This License gives no
    permission to license the work in any other way, but it does not
    invalidate such permission if you have separately received it.
-A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.
+    d) If the work has interactive user interfaces, each must display
    Appropriate Legal Notices; however, if the Program has interactive
    interfaces that do not display Appropriate Legal Notices, your
    work need not make them do so.
  A compilation of a covered work with other separate and independent
 works, which are not by their nature extensions of the covered work,
 and which are not combined with it such as to form a larger program,
 in or on a volume of a storage or distribution medium, is called an
 "aggregate" if the compilation and its resulting copyright are not
 used to limit the access or legal rights of the compilation's users
 beyond what the individual works permit.  Inclusion of a covered work
 in an aggregate does not cause this License to apply to the other
 parts of the aggregate.
  6. Conveying Non-Source Forms.
 You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:
-     a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
+  You may convey a covered work in object code form under the terms
 of sections 4 and 5, provided that you also convey the
 machine-readable Corresponding Source under the terms of this License,
 in one of these ways:
-     b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge.
+    a) Convey the object code in, or embodied in, a physical product
    (including a physical distribution medium), accompanied by the
    Corresponding Source fixed on a durable physical medium
    customarily used for software interchange.
-     c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.
+    b) Convey the object code in, or embodied in, a physical product
    (including a physical distribution medium), accompanied by a
    written offer, valid for at least three years and valid for as
    long as you offer spare parts or customer support for that product
    model, to give anyone who possesses the object code either (1) a
    copy of the Corresponding Source for all the software in the
    product that is covered by this License, on a durable physical
    medium customarily used for software interchange, for a price no
    more than your reasonable cost of physically performing this
    conveying of source, or (2) access to copy the
    Corresponding Source from a network server at no charge.
-     d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements.
+    c) Convey individual copies of the object code with a copy of the
    written offer to provide the Corresponding Source.  This
    alternative is allowed only occasionally and noncommercially, and
    only if you received the object code with such an offer, in accord
    with subsection 6b.
-     e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.
+    d) Convey the object code by offering access from a designated
    place (gratis or for a charge), and offer equivalent access to the
    Corresponding Source in the same way through the same place at no
    further charge.  You need not require recipients to copy the
    Corresponding Source along with the object code.  If the place to
    copy the object code is a network server, the Corresponding Source
    may be on a different server (operated by you or a third party)
    that supports equivalent copying facilities, provided you maintain
    clear directions next to the object code saying where to find the
    Corresponding Source.  Regardless of what server hosts the
    Corresponding Source, you remain obligated to ensure that it is
    available for as long as needed to satisfy these requirements.
-A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work.
+    e) Convey the object code using peer-to-peer transmission, provided
    you inform other peers where the object code and Corresponding
    Source of the work are being offered to the general public at no
    charge under subsection 6d.
-A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, “normally used” refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product.
+  A separable portion of the object code, whose source code is excluded
 from the Corresponding Source as a System Library, need not be
 included in conveying the object code work.
-“Installation Information” for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made.
+  A "User Product" is either (1) a "consumer product", which means any
 tangible personal property which is normally used for personal, family,
 or household purposes, or (2) anything designed or sold for incorporation
 into a dwelling.  In determining whether a product is a consumer product,
 doubtful cases shall be resolved in favor of coverage.  For a particular
 product received by a particular user, "normally used" refers to a
 typical or common use of that class of product, regardless of the status
 of the particular user or of the way in which the particular user
 actually uses, or expects or is expected to use, the product.  A product
 is a consumer product regardless of whether the product has substantial
 commercial, industrial or non-consumer uses, unless such uses represent
 the only significant mode of use of the product.
-If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM).
+  "Installation Information" for a User Product means any methods,
 procedures, authorization keys, or other information required to install
 and execute modified versions of a covered work in that User Product from
 a modified version of its Corresponding Source.  The information must
 suffice to ensure that the continued functioning of the modified object
 code is in no case prevented or interfered with solely because
 modification has been made.
-The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.
+  If you convey an object code work under this section in, or with, or
 specifically for use in, a User Product, and the conveying occurs as
 part of a transaction in which the right of possession and use of the
 User Product is transferred to the recipient in perpetuity or for a
 fixed term (regardless of how the transaction is characterized), the
 Corresponding Source conveyed under this section must be accompanied
 by the Installation Information.  But this requirement does not apply
 if neither you nor any third party retains the ability to install
 modified object code on the User Product (for example, the work has
 been installed in ROM).
-Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying.
+  The requirement to provide Installation Information does not include a
 requirement to continue to provide support service, warranty, or updates
 for a work that has been modified or installed by the recipient, or for
 the User Product in which it has been modified or installed.  Access to a
 network may be denied when the modification itself materially and
 adversely affects the operation of the network or violates the rules and
 protocols for communication across the network.
  Corresponding Source conveyed, and Installation Information provided,
 in accord with this section must be in a format that is publicly
 documented (and with an implementation available to the public in
 source code form), and must require no special password or key for
 unpacking, reading or copying.
  7. Additional Terms.
 “Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.
-When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.
+  "Additional permissions" are terms that supplement the terms of this
 License by making exceptions from one or more of its conditions.
 Additional permissions that are applicable to the entire Program shall
 be treated as though they were included in this License, to the extent
 that they are valid under applicable law.  If additional permissions
 apply only to part of the Program, that part may be used separately
 under those permissions, but the entire Program remains governed by
 this License without regard to the additional permissions.
-Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:
+  When you convey a copy of a covered work, you may at your option
 remove any additional permissions from that copy, or from any part of
 it.  (Additional permissions may be written to require their own
 removal in certain cases when you modify the work.)  You may place
 additional permissions on material, added by you to a covered work,
 for which you have or can give appropriate copyright permission.
-     a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
+  Notwithstanding any other provision of this License, for material you
 add to a covered work, you may (if authorized by the copyright holders of
 that material) supplement the terms of this License with terms:
-     b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
+    a) Disclaiming warranty or limiting liability differently from the
    terms of sections 15 and 16 of this License; or
-     c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or
+    b) Requiring preservation of specified reasonable legal notices or
    author attributions in that material or in the Appropriate Legal
    Notices displayed by works containing it; or
-     d) Limiting the use for publicity purposes of names of licensors or authors of the material; or
+    c) Prohibiting misrepresentation of the origin of that material, or
    requiring that modified versions of such material be marked in
    reasonable ways as different from the original version; or
-     e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or
+    d) Limiting the use for publicity purposes of names of licensors or
    authors of the material; or
-     f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.
+    e) Declining to grant rights under trademark law for use of some
    trade names, trademarks, or service marks; or
-All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.
+    f) Requiring indemnification of licensors and authors of that
    material by anyone who conveys the material (or modified versions of
    it) with contractual assumptions of liability to the recipient, for
    any liability that these contractual assumptions directly impose on
    those licensors and authors.
-If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
+  All other non-permissive additional terms are considered "further
 restrictions" within the meaning of section 10.  If the Program as you
 received it, or any part of it, contains a notice stating that it is
 governed by this License along with a term that is a further
 restriction, you may remove that term.  If a license document contains
 a further restriction but permits relicensing or conveying under this
 License, you may add to a covered work material governed by the terms
 of that license document, provided that the further restriction does
 not survive such relicensing or conveying.
-Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.
+  If you add terms to a covered work in accord with this section, you
 must place, in the relevant source files, a statement of the
 additional terms that apply to those files, or a notice indicating
 where to find the applicable terms.
  Additional terms, permissive or non-permissive, may be stated in the
 form of a separately written license, or stated as exceptions;
 the above requirements apply either way.
  8. Termination.
 You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).
-However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
+  You may not propagate or modify a covered work except as expressly
 provided under this License.  Any attempt otherwise to propagate or
 modify it is void, and will automatically terminate your rights under
 this License (including any patent licenses granted under the third
 paragraph of section 11).
-Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
+  However, if you cease all violation of this License, then your
 license from a particular copyright holder is reinstated (a)
 provisionally, unless and until the copyright holder explicitly and
 finally terminates your license, and (b) permanently, if the copyright
 holder fails to notify you of the violation by some reasonable means
 prior to 60 days after the cessation.
-Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.
+  Moreover, your license from a particular copyright holder is
 reinstated permanently if the copyright holder notifies you of the
 violation by some reasonable means, this is the first time you have
 received notice of violation of this License (for any work) from that
 copyright holder, and you cure the violation prior to 30 days after
 your receipt of the notice.
  Termination of your rights under this section does not terminate the
 licenses of parties who have received copies or rights from you under
 this License.  If your rights have been terminated and not permanently
 reinstated, you do not qualify to receive new licenses for the same
 material under section 10.
  9. Acceptance Not Required for Having Copies.
-You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
+
  You are not required to accept this License in order to receive or
 run a copy of the Program.  Ancillary propagation of a covered work
 occurring solely as a consequence of using peer-to-peer transmission
 to receive a copy likewise does not require acceptance.  However,
 nothing other than this License grants you permission to propagate or
 modify any covered work.  These actions infringe copyright if you do
 not accept this License.  Therefore, by modifying or propagating a
 covered work, you indicate your acceptance of this License to do so.
  10. Automatic Licensing of Downstream Recipients.
 Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.
-An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
+  Each time you convey a covered work, the recipient automatically
 receives a license from the original licensors, to run, modify and
 propagate that work, subject to this License.  You are not responsible
 for enforcing compliance by third parties with this License.
-You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
+  An "entity transaction" is a transaction transferring control of an
 organization, or substantially all assets of one, or subdividing an
 organization, or merging organizations.  If propagation of a covered
 work results from an entity transaction, each party to that
 transaction who receives a copy of the work also receives whatever
 licenses to the work the party's predecessor in interest had or could
 give under the previous paragraph, plus a right to possession of the
 Corresponding Source of the work from the predecessor in interest, if
 the predecessor has it or can get it with reasonable efforts.
  You may not impose any further restrictions on the exercise of the
 rights granted or affirmed under this License.  For example, you may
 not impose a license fee, royalty, or other charge for exercise of
 rights granted under this License, and you may not initiate litigation
 (including a cross-claim or counterclaim in a lawsuit) alleging that
 any patent claim is infringed by making, using, selling, offering for
 sale, or importing the Program or any portion of it.
  11. Patents.
 A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's “contributor version”.
-A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, “control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
+  A "contributor" is a copyright holder who authorizes use under this
 License of the Program or a work on which the Program is based.  The
 work thus licensed is called the contributor's "contributor version".
-Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
+  A contributor's "essential patent claims" are all patent claims
 owned or controlled by the contributor, whether already acquired or
 hereafter acquired, that would be infringed by some manner, permitted
 by this License, of making, using, or selling its contributor version,
 but do not include claims that would be infringed only as a
 consequence of further modification of the contributor version.  For
 purposes of this definition, "control" includes the right to grant
 patent sublicenses in a manner consistent with the requirements of
 this License.
-In the following three paragraphs, a “patent license” is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To “grant” such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
 patent license under the contributor's essential patent claims, to
 make, use, sell, offer for sale, import and otherwise run, modify and
 propagate the contents of its contributor version.
-If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
+  In the following three paragraphs, a "patent license" is any express
 agreement or commitment, however denominated, not to enforce a patent
 (such as an express permission to practice a patent or covenant not to
 sue for patent infringement).  To "grant" such a patent license to a
 party means to make such an agreement or commitment not to enforce a
 patent against the party.
-If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
+  If you convey a covered work, knowingly relying on a patent license,
 and the Corresponding Source of the work is not available for anyone
 to copy, free of charge and under the terms of this License, through a
 publicly available network server or other readily accessible means,
 then you must either (1) cause the Corresponding Source to be so
 available, or (2) arrange to deprive yourself of the benefit of the
 patent license for this particular work, or (3) arrange, in a manner
 consistent with the requirements of this License, to extend the patent
 license to downstream recipients.  "Knowingly relying" means you have
 actual knowledge that, but for the patent license, your conveying the
 covered work in a country, or your recipient's use of the covered work
 in a country, would infringe one or more identifiable patents in that
 country that you have reason to believe are valid.
-A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+  If, pursuant to or in connection with a single transaction or
 arrangement, you convey, or propagate by procuring conveyance of, a
 covered work, and grant a patent license to some of the parties
 receiving the covered work authorizing them to use, propagate, modify
 or convey a specific copy of the covered work, then the patent license
 you grant is automatically extended to all recipients of the covered
 work and works based on it.
-Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+  A patent license is "discriminatory" if it does not include within
 the scope of its coverage, prohibits the exercise of, or is
 conditioned on the non-exercise of one or more of the rights that are
 specifically granted under this License.  You may not convey a covered
 work if you are a party to an arrangement with a third party that is
 in the business of distributing software, under which you make payment
 to the third party based on the extent of your activity of conveying
 the work, and under which the third party grants, to any of the
 parties who would receive the covered work from you, a discriminatory
 patent license (a) in connection with copies of the covered work
 conveyed by you (or copies made from those copies), or (b) primarily
 for and in connection with specific products or compilations that
 contain the covered work, unless you entered into that arrangement,
 or that patent license was granted, prior to 28 March 2007.
  Nothing in this License shall be construed as excluding or limiting
 any implied license or other defenses to infringement that may
 otherwise be available to you under applicable patent law.
  12. No Surrender of Others' Freedom.
-If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+
  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
 excuse you from the conditions of this License.  If you cannot convey a
 covered work so as to satisfy simultaneously your obligations under this
 License and any other pertinent obligations, then as a consequence you may
 not convey it at all.  For example, if you agree to terms that obligate you
 to collect a royalty for further conveying from those to whom you convey
 the Program, the only way you could satisfy both those terms and this
 License would be to refrain entirely from conveying the Program.
  13. Use with the GNU Affero General Public License.
-Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.
+
  Notwithstanding any other provision of this License, you have
 permission to link or combine any covered work with a work licensed
 under version 3 of the GNU Affero General Public License into a single
 combined work, and to convey the resulting work.  The terms of this
 License will continue to apply to the part which is the covered work,
 but the special requirements of the GNU Affero General Public License,
 section 13, concerning interaction through a network will apply to the
 combination as such.
  14. Revised Versions of this License.
 The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
-Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License “or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.
+  The Free Software Foundation may publish revised and/or new versions of
 the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
-If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
+  Each version is given a distinguishing version number.  If the
 Program specifies that a certain numbered version of the GNU General
 Public License "or any later version" applies to it, you have the
 option of following the terms and conditions either of that numbered
 version or of any later version published by the Free Software
 Foundation.  If the Program does not specify a version number of the
 GNU General Public License, you may choose any version ever published
 by the Free Software Foundation.
-Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+  If the Program specifies that a proxy can decide which future
 versions of the GNU General Public License can be used, that proxy's
 public statement of acceptance of a version permanently authorizes you
 to choose that version for the Program.
  Later license versions may give you additional or different
 permissions.  However, no additional obligations are imposed on any
 author or copyright holder as a result of your choosing to follow a
 later version.
  15. Disclaimer of Warranty.
-THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  16. Limitation of Liability.
-IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
-If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
  If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
 reviewing courts shall apply local law that most closely approximates
 an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
-If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
+  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
-To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
+  To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
-     ConfigKit
+    <one line to give the program's name and a brief idea of what it does.>
-     Copyright (C) 2026  eric
+    Copyright (C) <year>  <name of author>
-     This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
-     This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
-     You should have received a copy of the GNU General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
-If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
+  If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
-     ConfigKit  Copyright (C) 2026  eric
+    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-     This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
+    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
-The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
+The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
-You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <http://www.gnu.org/licenses/>.
+  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
-The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <http://www.gnu.org/philosophy/why-not-lgpl.html>.
+  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/README.md
+++ b/README.md
@@ -8,14 +8,14 @@ Linux is release-validated; macOS support is best-effort. See the
 ConfigKit's initial loader accepts one strict YAML
 source (or explicit defaults-only input), optionally traverses explicit path and glob
 imports, strictly composes their disjoint definitions, applies typed defaults, and
-can overlay one selected fixed profile and check an application schema version. It
+can overlay one selected fixed overlay and check an application schema version. It
 returns detached metadata and safe diagnostics.
 Applications may perform audited defaulting and normalization through a resolver,
 then report domain errors and warnings through read-only semantic validation. Secret
 tags and a path predicate drive deterministic redacted effective YAML. Typed secret
 references resolve environment names before validation, and explicit
 secrets-directory bootstrap is available as a separate startup operation. Explicit
-CLI override records apply above profiles. Value explanation is available through
+CLI override records apply above overlays. Value explanation is available through
 detached structured records and deterministic redacted output.
 ```go
--- a/doc.go
+++ b/doc.go
@@ -2,7 +2,7 @@
 // loading for Go programs.
 //
 // Load supports file, byte, reader, and explicit no-input sources with strict YAML,
-// typed defaults, imports, profiles, CLI overrides, schema-version checks, detached
+// typed defaults, imports, overlays, CLI overrides, schema-version checks, detached
 // metadata, recorded application resolution, typed secret references, safe effective
 // rendering, read-only semantic validation, and structured load errors. The
 // configuration contract is documented in docs/config.md.
--- a/docs/config.md
+++ b/docs/config.md
@@ -20,7 +20,7 @@ The zero `Source` is invalid. Constructor argument failures are retained inside
 opaque source and become safe structured diagnostics when the source is consumed.
 File sources can observe file changes between consumptions; byte sources cannot.
-Each source is limited to 8 MiB. A load using imports or an active profile is limited
+Each source is limited to 8 MiB. A load using imports or an active overlay is limited
 to 64 MiB across all accepted sources, 1,024 accepted sources, 64 active import
 edges, and 1,000,000 input nodes in aggregate. Glob expansion separately permits
 1,000,000 visited directory entries, including nonmatches. Reads request at most the
@@ -33,7 +33,7 @@ truncated. Data returned together with a read error is not accepted as partial i
 root `T` must satisfy the application schema contract below. With no options it
 starts from the Go zero value. A `Definition[T].Defaults` factory, when supplied,
 runs exactly once after successful source parsing, schema construction, optional
-schema-version checking, and selected-profile loading. Its result is detached before
+schema-version checking, and selected-overlay loading. Its result is detached before
 input is applied. Resolver-provided mutable values are detached before secret lookup
 and validation, and a final detached copy prevents equal-valued aliases introduced
 by validators from escaping into the returned configuration. The publication copy
@@ -43,7 +43,7 @@ The current lifecycle is:
 ```text
 validate options → parse the selected source → traverse/compose enabled imports
-  → build schema → check the optional application version → apply a selected profile
+  → build schema → check the optional application version → apply a selected overlay
  → apply explicit CLI overrides → create and clone defaults → strictly decode
  → recorded application resolution
  → resolve typed secret references → semantic validation → classify secrets
@@ -57,9 +57,9 @@ contributes no source, and continues through defaults, decode, and projection. A
 missing file remains an error; it is never interpreted as no input.
 The current `Options` boundary accepts a defaults factory, `VersionRule`, resolver,
-semantic validator, explicit path and glob imports, one selected profile, and
+semantic validator, explicit path and glob imports, one selected overlay, and
 filesystem context. It also accepts explicit CLI override records, static secret
-tags, and a dynamic path predicate. `NoSource` rejects imports, active profiles,
+tags, and a dynamic path predicate. `NoSource` rejects imports, active overlays,
 and filesystem context as invalid combinations but accepts overrides. Input
 containing a reserved `configkit` mapping key is rejected while imports are
 disabled.
@@ -93,7 +93,7 @@ This is a load-local exception: siblings and unrelated fields, dynamic values,
 integer and float destinations, durations, `Secret`, and text codecs retain ordinary
 strict decoding. The retained source and history stay numeric while typed projection
 and effective YAML contain the resulting string; explanation records this through
-the normal decoding reconciliation event. Fragment, profile, and CLI ownership
+the normal decoding reconciliation event. Fragment, overlay, and CLI ownership
 protections apply before this conversion.
 The checker reports safe, value-free errors and warnings through `Validation.Error`
@@ -109,11 +109,11 @@ successful result. Callback panics remain programming failures.
 key/index distinctions using actual effective and historical container shapes;
 only parsed numeric tokens are resolved contextually. A descendant that never
 existed is not historical merely because an atomic ancestor was replaced. Exact surviving input paths
-are explicit and have a base or profile origin; omitted paths have a default origin.
+are explicit and have a base or overlay origin; omitted paths have a default origin.
 An explicit parent mapping does not make omitted children explicit. Null state and
 available source coordinates are retained. `History` records the Go-zero or application
-default baseline followed by exact base or profile definitions, including
+default baseline followed by exact base or overlay definitions, including
-equal-valued input. Profile replacement removes displaced descendants from effective
+equal-valued input. Overlay replacement removes displaced descendants from effective
 metadata while retaining their base definition and the parent replacement operation
 in history. All metadata queries and returned nested records are detached.
@@ -125,21 +125,21 @@ documentation in [metadata.go](../metadata.go) defines enumeration and path-orde
 details.
 History is chronological: a path can have a synthetic default record, its exact base
-definition, a profile replacement, and a recorded resolution operation. A descendant
+definition, an overlay replacement, and a recorded resolution operation. A descendant
 query uses the ancestor's path for a whole-container or whole-sequence replacement;
 the descendant can therefore retain history after `Lookup` stops reporting it as
 effective. Equal-valued input is still an explicit base definition, while a derived
 value for absent input remains non-explicit.
 A mapping assembled from the selected file and imports has one composite base origin
-whose locations retain source traversal order. A mapping also visited by a profile
+whose locations retain source traversal order. A mapping also visited by an overlay
-has a profile-layer composite origin with the lower contributing locations followed
+has an overlay-layer composite origin with the lower contributing locations followed
-by the profile location; an empty mapping is still an explicit container even though
+by the overlay location; an empty mapping is still an explicit container even though
 it contributes no children. Resolution origins are synthetic: they have layer
 `resolution`, no fabricated file location, and a `derived_default` or `normalization`
 operation. Reasons and dependency paths retain first occurrence order with duplicates
 removed. Source records remain ordered as selected source, depth-first imports, the
-selected profile, then synthetic CLI records in supplied order.
+selected overlay, then synthetic CLI records in supplied order.
 ### Secret classification and effective rendering
@@ -189,7 +189,7 @@ historical path. Its effective value and each chronological before/after value a
 parser values. `Present=false` with empty YAML means absence or deletion; explicit
 null is present and renders as `null`. The history starts with the canonical typed
 application-default or Go-zero baseline, then includes only relevant base sources in
-traversal order, the selected profile, supplied CLI records, and audited net
+traversal order, the selected overlay, supplied CLI records, and audited net
 resolution operations. Overlapping parent/child resolution records are rendered
 as one net subtree event with combined reasons and dependencies, rather than
 pretending that the recorded assignments ran in lexical order. Explicit equal
@@ -199,7 +199,7 @@ before domain resolution. Its origin retains the decoded path's source/default
 attribution; its reason identifies static-default retention and canonical decoding.
 This built-in inspection operation is not accepted by `Resolution.Record`.
-Base, profile, and CLI history preserves the policy-validated input representation,
+Base, overlay, and CLI history preserves the policy-validated input representation,
 including a superseded value that could not have decoded into the final Go field.
 Baseline, effective, and resolution values use canonical typed projection. A
 decoding event bridges replayed input and canonical typed values, so intermediate
@@ -338,7 +338,7 @@ found entry path. Resolution changes, additions, removals, and moves do not alte
 this entry view.
 `Resolution.Source(id)` returns a detached record for an already acquired source in
-the same load: the main source, imports, selected profile, and supplied CLI records
+the same load: the main source, imports, selected overlay, and supplied CLI records
 where applicable. Empty and unknown IDs return false. It never reloads input, reads
 the filesystem, resolves symlinks, or looks up credentials. A source path exists
 only when the acquired source has one; defaults and byte, reader, and CLI sources do
@@ -436,41 +436,41 @@ traversal order. Traversal order never authorizes replacement. Composition clone
 the resulting tree and its ordered claim records rather than mutating or aliasing an
 input document.
-## Selected profiles
+## Selected overlays
-`Options.Profile` selects at most one overlay by name. Names must match
+`Options.Overlay` selects at most one overlay by name. Names must match
 `[a-zA-Z0-9_-]+`; they are not paths. The empty name and exact lowercase name
-`default` select no profile, and `profiles/default.yml` is never loaded implicitly.
+`default` select no overlay, and `overlays/default.yml` is never loaded implicitly.
-Every other name resolves only to `<configuration-root>/profiles/<name>.yml`, with
+Every other name resolves only to `<configuration-root>/overlays/<name>.yml`, with
-no extension fallback, case normalization, inheritance, or profile stack. A selected
+no extension fallback, case normalization, inheritance, or overlay stack. A selected
-missing profile is an error.
+missing overlay is an error.
-The profile is a separately policy-validated YAML mapping. It is loaded after the
+The overlay is a separately policy-validated YAML mapping. It is loaded after the
 base import graph is composed and its schema version is checked, but before defaults
-and typed decoding. Profile bytes, nodes, and source records count toward the same
+and typed decoding. Overlay bytes, nodes, and source records count toward the same
 aggregate limits as base inputs. Its canonical path must remain within the configured
 root and must not duplicate a file already present in the base graph.
 Overlay is intentionally distinct from strict composition:
-| Existing lower node | Incoming profile node | Result |
+| Existing lower node | Incoming overlay node | Result |
 | --- | --- | --- |
-| Absent | Value | Retain the profile value |
+| Absent | Value | Retain the overlay value |
 | Value | Absent | Retain the lower value |
 | Mapping | Mapping | Recurse by mapping key |
 | Any other pair of present nodes | Any other pair of present nodes | Replace the entire lower node |
-Scalars, sequences, and null are atomic. Thus a profile sequence replaces rather
+Scalars, sequences, and null are atomic. Thus an overlay sequence replaces rather
 than extends a base sequence, `[]` clears it, null is an explicit replacement, and
 cross-kind replacement is allowed when the final application schema accepts it.
 Replacing a subtree removes all displaced descendants from effective presence and
 origin data; history retains the displaced definitions and identifies the parent
-replacement. Surviving profile paths have profile origins, while recursively shared
+replacement. Surviving overlay paths have overlay origins, while recursively shared
 mapping containers retain their contributing locations.
-A profile may not contain `configkit` anywhere, contribute the configured schema
+An overlay may not contain `configkit` anywhere, contribute the configured schema
 version, or replace an ancestor of that version with a scalar or null. These rules
-apply even if the supplied version text would be unchanged. Profiles cannot mask a
+apply even if the supplied version text would be unchanged. Overlays cannot mask a
 base parse, composition, or version failure because those checks run first.
 ## Explicit CLI overrides
@@ -483,8 +483,8 @@ must never contain the raw argument or configured value. General environment
 variable overlays are an explicit non-goal: environment access is reserved for
 typed secret references.
-Overrides apply after the selected profile and before typed defaults/decoding, so
+Overrides apply after the selected overlay and before typed defaults/decoding, so
-the input precedence is application defaults < composed base < selected profile <
+the input precedence is application defaults < composed base < selected overlay <
 CLI. Recorded resolution, typed secret lookup, and semantic validation follow the
 effective override tree. Overrides also work with `NoSource`.
@@ -506,7 +506,7 @@ configured schema-version path. Unknown fields and effective type mismatches rem
 ordinary strict-decoder errors.
 At most 1,024 records are accepted, and each record creates one synthetic CLI
-source after file/profile sources in supplied order. Override sources share the
+source after file/overlay sources in supplied order. Override sources share the
 1,024-source ceiling. A record has an 8 MiB string-byte limit; override strings and
 source bytes share the 64 MiB aggregate limit. Synthetic mapping keys and values
 count toward the existing 1,000,000-node and depth-256 ceilings. Cycles, named or
@@ -514,7 +514,7 @@ unsupported types, nonfinite floats, and limit excesses fail with safe `override
 diagnostics. Diagnostics and provenance identify the safe `Flag` source, never raw
 arguments or values.
-Override origins are explicit CLI origins. History retains replaced base/profile
+Override origins are explicit CLI origins. History retains replaced base/overlay
 definitions and records equal-value replacements as well as structural changes.
 Caller-owned maps and slices are snapshotted during loading and must not be mutated
 concurrently with the call. The executable `ExampleOverride` shows translating a
--- a/docs/consumers/README.md
+++ b/docs/consumers/README.md
@@ -1,7 +1,7 @@
 # Consumer Adoption Guide
 ConfigKit removes parser setup, strict decoding, presence bookkeeping, import and
-profile traversal, precedence, provenance, secret lookup, and safe inspection from
+selected-overlay traversal, precedence, provenance, secret lookup, and safe inspection from
 applications. Consumers still own their configuration structs, defaults, semantic
 validation, schema-version policy, CLI parsing, runtime matching and conversion,
 resource checks, remote acquisition, and service initialization.
@@ -34,7 +34,7 @@ features appear only when the application needs them:
 result, err := configkit.Load[Config](configkit.File(path), configkit.Options[Config]{
    Definition: rules,
    Imports:    useDeclaredImports,
-    Profile:    selectedConfigProfile,
+    Overlay:    selectedConfigOverlay,
    Overrides:  explicitlySetFlags,
 })
 if err != nil {
@@ -43,8 +43,8 @@ if err != nil {
 return start(result.Config)
 ```
-Simple consumers use neither imports nor profiles. A complex consumer can opt into
+Simple consumers use neither imports nor selected overlays. A complex consumer can opt into
-both without redefining their syntax. ConfigKit profiles are configuration overlays;
+both without redefining their syntax. ConfigKit overlays are configuration overlays;
 they do not select or replace an application's LLM, model, pipeline, report, or
 execution profile concepts.
@@ -100,6 +100,16 @@ The examples preserve domain meaning while adopting one configuration convention
  blocked empty variables remain blocked, and ordinary `Load` never changes the
  process environment.
 ### Selected-overlay migration
 To adopt the current selected-overlay API, rename `Options.Profile`,
 `LayerProfile`, and `CodeProfile*` references to their `Overlay` equivalents; move
 selected files from `profiles/<name>.yml` to `overlays/<name>.yml`; update any
 handling of the `overlay` layer and `overlay.*` diagnostic strings; then rebuild.
 The [configuration contract](../config.md#selected-overlays) is the canonical
 behavioral reference. Application-owned profile concepts, such as `model_profile`,
 are unchanged, and any CLI flag rename remains the application's decision.
 These examples are migration evidence, not completed changes to Narratio, Notarius,
 WeatherReporter, or Seriatim. Updating those repositories, their deployed YAML, CLI
 wiring, runtime catalogs, and operational documentation remains separate downstream
@@ -113,7 +123,7 @@ focused behavioral owner:
 | Roadmap surface | Maintained owner |
 | --- | --- |
 | `Load`, `NoSource`, validation, versions, resolution, `SecretEnv`, overrides, and explanation | Executable examples in [`example_test.go`](../../example_test.go) |
-| Source/import/profile pipeline rules and artifact defaults | Narratio-shaped executable example and fixture |
+| Source/import/selected-overlay pipeline rules and artifact defaults | Narratio-shaped executable example and fixture |
 | Canonical module objects and dynamic option handling | WeatherReporter- and Notarius-shaped examples and migration tests |
 | `LoadSecretsDir`, bootstrap reporting, typed lookup, CLI explanation | `Example_weatherStartup` |
 | Results, metadata, diagnostics, effective output, and writer failures | Focused root-package load, provenance, rendering, and explanation tests |
--- a/docs/development.md
+++ b/docs/development.md
@@ -8,6 +8,8 @@ public behavior.
 ## Initial orientation
 1. Inspect the working tree and preserve unrelated changes.
   Agents must read and follow the [agent policy](policy/agents.md) before
   recommending, planning, or implementing changes.
 2. Read the architecture policy for code or design work.
 3. Read the policy, contract, and internal documents applicable to the task.
 4. Inspect the relevant implementation and behavioral tests before changing them.
@@ -56,6 +58,11 @@ and current facade ownership belongs to the [component overview](internal/overvi
 ## Baseline validation
 The completed overlay rename plan and release-workflow simplification record are
 preserved in Git history at `73ce6e9` under `docs/roadmap/`. Current overlay
 behavior belongs to the [configuration contract](config.md#selected-overlays),
 and release operations belong to the [release procedure](release.md).
 Install Go 1.25.0 or a supported patched/newer Go toolchain. Acquire declared
 dependencies explicitly before entering an offline development or validation
 environment:
@@ -88,8 +95,10 @@ Use focused checks while iterating, with validation proportionate to the change
 under the testing policy. Documentation-only work normally needs the local-link
 check below and whitespace review; behavior-bearing examples and commands also
 need execution. Use `go test -race ./...` for ownership or concurrency changes.
-The separate [release checker](release.md#4-validate-the-source-candidate) adds
+The [release checker](release.md#4-validate-the-source-candidate) performs one
-two-toolchain, module-hygiene, race, and cross-build gates.
+minimum-toolchain race-suite run, vet, module hygiene, and Linux cross-builds.
 It already covers examples, links, and package boundaries; do not additionally
 run the everyday checker just to repeat those checks. CI never gates a release.
 ## Task-to-test map
@@ -101,7 +110,7 @@ code changes. Use the component overview to find the corresponding implementatio
 | --- | --- | --- |
 | YAML syntax, diagnostics, parser limits | [Adapter tests](../internal/yaml/parse_test.go), [source translation](../internal/engine/parse_test.go) | `go test ./internal/yaml` and `go test ./internal/engine -run '^TestParseSource'` |
 | File/reader access, imports, globs, containment | [Sources](../internal/engine/source_test.go), [FIFO](../internal/engine/source_fifo_test.go), [imports](../internal/engine/imports_test.go), [globs](../internal/engine/glob_test.go) | `go test ./internal/engine -run 'Source\|Import\|Glob\|Filesystem\|Nonregular\|RegularFile'` |
-| Composition, profiles, CLI precedence | [Composition](../internal/engine/compose_test.go), [overlay](../internal/engine/overlay_test.go), [profiles](../internal/engine/profile_test.go), [overrides](../internal/engine/override_test.go) | `go test ./internal/engine -run 'Compose\|Overlay\|Profile\|Override'` |
+| Composition, selected overlays, CLI precedence | [Composition](../internal/engine/compose_test.go), [overlay](../internal/engine/overlay_test.go), [selected overlays](../internal/engine/selected_overlay_test.go), [overrides](../internal/engine/override_test.go) | `go test ./internal/engine -run 'Compose\|Overlay\|Override'` |
 | Schema, defaults, projection, cloning | [Schema](../internal/engine/schema_test.go), [decoding](../internal/engine/decode_test.go), [projection](../internal/engine/projection_test.go) | `go test ./internal/engine -run 'Schema\|Decode\|Projection\|Clone\|Inline\|CompareDocument'` |
 | Lifecycle, resolution, validation, callback ownership | [Loading](../internal/engine/load_test.go), [resolution](../internal/engine/resolution_test.go), [validation](../internal/engine/validation_test.go), [ownership](../internal/engine/callback_ownership_test.go), [independence](../internal/engine/independence_test.go) | `go test ./internal/engine -run 'Load\|Resolution\|Validation\|Validator\|Hook\|Callback\|Parallel'` |
 | Paths, metadata, provenance | [Paths](../internal/engine/path_test.go), [metadata](../internal/engine/metadata_test.go), [provenance](../internal/engine/provenance_test.go) | `go test ./internal/engine -run 'Path\|Metadata\|Provenance\|Queries'` |
--- a/docs/internal/extraction.md
+++ b/docs/internal/extraction.md
@@ -137,9 +137,11 @@ permission failures, explicit `conf.d` use, and entry/candidate budgets. This wo
 has no Narratio production equivalent; it uses the selected standard-library
 `path.Match` and bounded `File.ReadDir` adaptation rather than its flat loader.
-### Profiles and overlay
+### Upstream profiles and ConfigKit selected overlays
-Assigned to selected-profile overlay:
+The following upstream symbols and case names retain their original profile
 terminology. ConfigKit adapts their selected-overlay behavior without renaming the
 upstream evidence:
 - Production: `mergeOverlayComposition`, `mergeOverlayNodes`,
  `selectPipelineProfile`, `loadPipelineProfileOverlays`, and
@@ -153,19 +155,21 @@ Assigned to selected-profile overlay:
  `TestLoadPipelineProfilePairResolvesIndependentEffectivePipelines`.
 - Preserve: recursive mapping overlay, atomic scalar/sequence replacement,
  deterministic selection failures, source ownership, and independent results.
- Adapt: load only the selected fixed profile path; lowercase `default` means no
+- Adapt: load only the selected fixed overlay path; lowercase `default` means no
-  overlay. ConfigKit permits null and cross-kind replacement and does not support
+  selection. ConfigKit permits null and cross-kind replacement and does not support
-  declared defaults, inheritance, arbitrary profile paths, or validating every
+  declared defaults, inheritance, arbitrary overlay paths, or validating every
  unselected overlay.
-Implementation record (2026-09-06): `overlayDocuments`, `mergeOverlayMappings`,
+Implementation record (2026-09-06, updated 2026-09-23): `overlayDocuments`,
-`loadProfileDocument`, and `profileDirectiveDiagnostics` adapt the assigned merge,
+`mergeOverlayMappings`, `loadSelectedOverlayDocument`, and
-selection, loading, and ownership mechanics. `TestOverlayDocumentsRecursesMappingsAndReplacesAtomicSubtrees`,
+`overlayDirectiveDiagnostics` adapt the assigned merge, selection, loading, and
-`TestLoadAppliesSelectedProfileAfterBaseAndBeforeDefaults`, profile selection/error,
+ownership mechanics. `TestOverlayDocumentsRecursesMappingsAndReplacesAtomicSubtrees`,
-directive/version, containment, and budget cases adapt the assigned tests. ConfigKit
+`TestLoadAppliesSelectedOverlayAfterBaseAndBeforeDefaults`, selected-overlay
 selection/error, directive/version, containment, and budget cases adapt the assigned
 tests. ConfigKit
 uses exactly one fixed selected `.yml` source, permits null and cross-kind replacement,
-retains displaced descendant history, rejects any profile directive or version-path
+retains displaced descendant history, rejects any overlay directive or version-path
-contribution, and counts the profile in aggregate budgets. Narratio's declared
+contribution, and counts the overlay in aggregate budgets. Narratio's declared
 default, multi-overlay validation, inheritance-like application conventions, and
 null/kind restrictions were not retained.
@@ -196,7 +200,7 @@ previously extracted source claims, overlay displacement records, typed baseline
 and audited resolution snapshots in `load_metadata.go`. The representative
 `TestLayeredProvenanceAgreesWithResolvedSnapshot` adapts Narratio's stable ownership,
 profile ownership, deterministic effective projection, and side-effect-free
-inspection cases across one default/import/profile/resolution workflow. ConfigKit
+inspection cases across one default/import/overlay/resolution workflow. ConfigKit
 adds chronological descendant history for parent and whole-sequence operations,
 composite empty-mapping origins, canonical resolution reasons/dependencies, private
 snapshot agreement, defensive nested copies, and concurrent load isolation. Value
--- a/docs/policy/agents.md
+++ b/docs/policy/agents.md
@@ -0,0 +1,91 @@
 # Agent Policy
 **Base Policy Version:** 1.1
 **Last Updated**: 2026-09-23
 ## Purpose
 Agents working in this repository must read and adhere to the following house rules.
 ## Implementation Discipline
 **KEY PRINCIPLES:** Write the simplest idiomatic code that satisfies the user's
 request. Do not implicitly strengthen requirements, restrictions, or guarantees
 beyond what the user actually requested.
 Simplify the mechanism, not the user's choices.
 **Keep implementation machinery proportionate.** Use straightforward,
 idiomatic code and introduce only the machinery needed to support the requested
 behavior and flexibility. Optimize for conceptual simplicity and
 maintainability, not for the fewest lines, fewest options, or narrowest product
 surface.
 **Do not invent restrictions.** Do not reject, prohibit, constrain, cap,
 harden, or otherwise narrow behavior unless required by the user, an explicit
 repository contract, or an unavoidable correctness constraint. Preserve
 operator and caller choice where policy has not been established. If an
 additional restriction appears advisable, present it as a decision rather than
 silently implementing it.
 A correctness constraint must follow from the requested behavior or an
 established invariant, not from the convenience of the chosen implementation.
 Explain the specific failure it prevents and why a less restrictive
 implementation cannot satisfy the contract.
 **Do not invent guarantees.** Do not strengthen public contracts, guarantees,
 or invariants beyond those expressly requested by the user.
 **Use the standard library.** For example: in almost every case, the best
 approach to copying files is to use the standard library. Writing custom code to
 implement power-loss protection at the application level, or to guard against
 bad actors with privileged and concurrent access to the host's filesystem,
 is wasteful, unnecessary, and not idiomatic. Stick to the simple, standard, and
 idiomatic approach unless another path is expressly requested by the user.
 **An implementation detail is not repository policy.** Tests and documentation
 must not elevate incidental behavior into a durable guarantee or restriction
 unless that behavior was expressly selected as part of the contract. Existing
 explicit contracts remain authoritative; changing or weakening one requires a
 deliberate decision rather than being inferred from this principle.
 Agent-authored plans, tests, documentation, and prior implementations are not
 evidence that an additional restriction was deliberately approved. Identify the
 authorizing requirement or decision; when that authority is unclear, surface
 the ambiguity rather than treating repetition as approval.
 ## Git Commit Policy
 By default, create a commit after completing each coherent unit of work, using a
 concise, plain-English message describing what changed. This policy is standing
 authorization to create those local commits; a separate user request is not
 required. An explicit user instruction to leave work uncommitted takes precedence.
 A unit of work is a focused, reviewable outcome, including its relevant tests and
 documentation. Do not commit after every intermediate edit or create empty commits.
 Complete the appropriate validation before committing. If work is incomplete or
 validation is blocked, report that state rather than presenting it as completed.
 Before committing:
 1. Run `git status --short` and review the relevant diff, including any staged
   changes. Identify changes that predate the current unit of work.
 2. Exclude secrets, local environment files, generated junk, and unrelated changes.
 3. Stage only the files or hunks belonging to the completed unit. Use `git add .`
   only when every included change belongs to that unit. Do not disturb unrelated
   staged or unstaged work.
 4. Review `git diff --staged` and run appropriate checks for the change. Do not
   repeat checks already passed for unchanged content merely to create a commit.
 5. Review `git log --oneline -n 10` and use
   `git commit -m "<concise plain-English commit message>"`.
 6. Report the commit identifier and any remaining uncommitted work.
 If the unit cannot be safely separated from pre-existing work, leave it uncommitted
 and explain the overlap rather than silently including that work. If a commit
 fails, preserve the changes and report the failure; do not bypass hooks.
 Default commit authorization does not authorize pushing, publishing, amending,
 resetting, reverting, or rewriting history. Those actions require a separate user
 instruction. Do not use `git commit -a` or `git commit --no-verify` to bypass the
 staging and validation discipline above.
--- a/docs/policy/architecture.md
+++ b/docs/policy/architecture.md
@@ -71,7 +71,7 @@ network provider into the library.
 ## Public API and dependency direction
 Keep one small, coherent public surface for the supported lifecycle. Simple
-single-document consumers must not need import, profile, or provider machinery.
+single-document consumers must not need import, overlay, or provider machinery.
 Do not expose parser-specific nodes, errors, or extension hooks through the
 public API. Parser integration belongs behind a private boundary, as recorded
 in [ADR 0002](../adr/0002-own-yaml-semantics.md).
@@ -106,7 +106,7 @@ same inputs and options. Invalid input must not produce a successful usable
 configuration. Do not run application hooks on invalid typed configuration.
 User-controlled precedence is application defaults, composed base, selected
-profile, then explicitly supplied CLI overrides. Applications own flag parsing;
+overlay, then explicitly supplied CLI overrides. Applications own flag parsing;
 ConfigKit owns overlay semantics and provenance. Domain resolution follows these
 inputs and must remain recorded, not become a hidden override channel.
--- a/docs/policy/documentation.md
+++ b/docs/policy/documentation.md
@@ -1,8 +1,8 @@
 # Documentation Policy
-**Base Policy Version:** 1.0
+**Base Policy Version:** 1.1
-**Last Updated:** 2026-09-06
+**Last Updated:** 2026-09-23
 ## Purpose
@@ -59,6 +59,7 @@ handling, not secret values.
 | Product orientation | `README.md` | Current status, purpose, navigation, and a minimal working example |
 | Contributor entry point | `docs/development.md` | Reading guide and actual baseline validation commands |
 | Architecture rules | `docs/policy/architecture.md` | Responsibilities, dependency constraints, invariants, and scope boundaries |
 | Agent rules | `docs/policy/agents.md` | Implementation discipline, proportionality, rules against inventing contracts, and local commit authorization; not application contracts or architecture |
 | Documentation rules | `docs/policy/documentation.md` | Ownership and document lifecycle |
 | Testing rules | `docs/policy/testing.md` | Risk-based sufficiency, test boundaries, and maintenance principles |
 | Release rules | `docs/policy/release.md` | Compatibility, integrity, gates, immutability, and exceptions |
--- a/docs/policy/release.md
+++ b/docs/policy/release.md
@@ -1,8 +1,8 @@
 # Release Policy
-**Base Policy Version:** 0.1.0
+**Base Policy Version:** 1.0
-**Last Updated:** 2026-09-12
+**Last Updated:** 2026-09-23
 ## Purpose
@@ -21,7 +21,8 @@ ConfigKit adopts a source-only Go module release model. The source tag and
 version-matched release note are the declared deliverables. Standalone binaries,
 container images, and separate binary/package-registry publication are not
 required. This does not waive source compilation, module hygiene, testing, or
-consumer-facing module retrieval and build verification.
+local target-build validation. Post-publication consumer retrieval is optional,
 as documented under Policy Exceptions.
 The release procedure must define the module path, authoritative remote,
 supported Go versions and operating-system/architecture targets, prerequisite
@@ -74,6 +75,10 @@ responsibility is documented. Automation must not silently change the source
 candidate, move a published tag, replace a published deliverable, or repair a
 release in place.
 A successful push of the intended annotated tag completes the source-only release.
 Never wait for CI or use its status as a readiness or completion gate. Optional
 post-publication checks must not delay reporting success.
 ## Versioning And Compatibility
 Stable releases use Semantic Versioning in the form `vMAJOR.MINOR.PATCH`, with
@@ -132,38 +137,28 @@ current documentation or defer required documentation changes.
 ## Candidate Preparation And Validation
-Each repository must provide one documented release-check command or script
+ConfigKit provides one local release checker. Run it once against the final
-that exercises the complete set of automated source-candidate gates. The
+committed candidate using one maintained patch of the minimum supported Go line
-repository-specific procedure must state all additional manual gates.
+on Linux. It checks module hygiene, formatting and whitespace, the full offline
 suite with the race detector, static analysis, and CGO-disabled Linux amd64/arm64
 builds. Examples, documentation links, consumer fixtures, and package boundaries
 are covered by that suite, not separate repeated runs. Native package compilation
 is covered by the test run. A second toolchain is optional and non-gating.
-The required gates are:
+Commit the release note and associated changes before release validation. Record
 the exact validated commit; revalidate if the candidate changes. Do not require
 both pre-commit and post-commit full checker runs for unchanged content.
 Do not publish uncommitted or unvalidated content. Local check failures still
 block publication. Skipped test cases are reported, not separate human sign-off
 requirements.
- dependency or module hygiene appropriate to the language and ecosystem;
+Compatibility review, release-note accuracy, removal of completed roadmaps, and
- the complete deterministic, offline default test suite;
+review for unintended files, credentials, private data, and unrelated changes
- race, concurrency, or equivalent safety checks where the implementation can
+are ordinary preparation. The executing agent may perform them without routine
-  be meaningfully checked for those risks;
+human approval or separate manual evidence records. Ask the maintainer only for
- static analysis and linting used by the repository;
+genuine unresolved decisions or missing authority. A clean existing checkout is
- production builds for every supported target that can be built in the
+sufficient; a dedicated clone is optional. Dependency and toolchain update
-  release environment;
+research belongs to maintenance or relevant changes, not every release.
 - formatting and whitespace checks;
 - validation of maintained examples, configuration, schemas, generated
  sources, and documentation commands where applicable;
 - review of changed local documentation links;
 - removal of obsolete roadmap documents under `docs/roadmap/` that describe
  completed work included in the release;
 - review for unintended files, generated output, credentials, private data,
  and unrelated changes; and
 - any additional security, compatibility, migration, packaging, or platform
  checks required by the product.
 Unavailable tooling or an inapplicable check must be addressed explicitly in
 the adopted policy or release procedure; it must not disappear silently from
 the candidate gates.
 Run the complete checker while preparing the candidate. Commit the release
 note and all associated code, tests, documentation, and configuration, then
 run the complete checker again against the exact commit intended for release.
 Do not publish a release from uncommitted or unvalidated content.
 ## Publication Guards
@@ -178,7 +173,8 @@ verify all of the following:
 - the authoritative remote branch points to that same commit;
 - the matching release note exists in that commit and has the required title
  and sections;
- all required approvals and automated gates succeeded for that commit; and
+- release publication is authorized and the local automated gates succeeded for
  that commit; and
 - no local or remote tag already uses the selected version.
 Create the version tag against the guarded commit and verify its target before
@@ -219,21 +215,36 @@ order:
 1. maintainer prerequisites and required access;
 2. version selection and compatibility review;
 3. release-note creation;
-4. candidate preparation and the complete validation command;
+4. candidate preparation and commit;
-5. candidate commit, push, and exact commit recording;
+5. one local validation pass, exact candidate recording, and push;
 6. publication guards;
 7. exact tag and deliverable publication commands;
-8. authoritative remote and consumer-facing verification; and
+8. completion on successful tag push and optional post-publication checks; and
 9. failure handling and correction.
 The procedure should use copyable, fail-fast commands where practical. It must
 name the primary branch, authoritative remote, tag form, published
 deliverables, supported build targets, release automation responsibilities,
-and consumer verification path. It must link to this policy instead of
+and optional consumer verification path. It must link to this policy instead of
 restating or redefining its requirements.
 ## Policy Exceptions
 Any exception to this policy must be explicitly documented in this section,
 including the repository constraint requiring it, its rationale, scope, and
 compensating controls. Customizing release mechanics must not silently weaken
 the policy's integrity, validation, documentation, verification, or immutability
 requirements.
 For ConfigKit's source-only releases, the maintainer accepts successful publication
 of the intended tag as sufficient completion evidence. This is an explicit
 exception to the shared standard's mandatory post-publication verification:
 authoritative tag read-back and fresh consumer retrieval are optional and
 non-gating. CI status and downstream retrieval availability must not delay release
 completion. Compensating controls are local validation of the exact candidate,
 automated pre-publication guards, matching remote main, verification of the local
 annotated tag target, explicit ref pushes, and immutable published versions.
 For v0.1.1 only, the maintainer approved renaming the reserved `_configkit` key to
 `configkit` as an error-correcting point release because there are no current
 consumers. This intentionally changes the v0.1.0 configuration contract without a
@@ -247,5 +258,5 @@ only. The final candidate still requires the complete Linux release checker.
 This exception waives only repeating the macOS check after those documentation
 changes; it does not waive other publication or verification gates.
-Candidate selection, publication, and post-publication verification remain
+Candidate selection and guarded publication remain mandatory; post-publication
-mandatory steps in the [release procedure](../release.md).
+verification is optional in the [release procedure](../release.md).
--- a/docs/release.md
+++ b/docs/release.md
@@ -12,21 +12,24 @@ binary, container image, generated package, or separate registry publication.
 - Authoritative remote: `origin`, expected to fetch from
  `https://gitea.maximumdirect.net/eric/ConfigKit.git`
 - Tags: stable Semantic Versions such as `v0.1.0`; prerelease tags are not supported
- Minimum Go language/toolchain line: Go 1.25, tested with a supported patched
+- Minimum Go language/toolchain line: Go 1.25, release-validated with one maintained
-  Go 1.25 toolchain and one newer supported toolchain
+  patch of that line; newer-toolchain testing is optional and non-gating
 - Release-gated build targets: Linux on amd64 and arm64
 - Best-effort targets: macOS on amd64 and arm64, under the
  [platform support policy](policy/release.md#platform-support)
-The automated checker cross-builds the Linux targets. Before release, the maintainer
+The local Linux checker includes native race tests and CGO-disabled cross-builds.
-must also obtain native test, race, symlink, and permission-fixture evidence on Linux;
+Its output reports skipped filesystem cases; no separate evidence record or
-cross-compilation is not native execution evidence. Native macOS checks and Darwin
+human sign-off is required. Native macOS checks and Darwin cross-builds are
-cross-builds are optional and do not gate publication.
+optional and do not gate publication.
 CI is never a release gate. Do not wait for it, poll its status, or delay reporting
 completion because it is pending, unavailable, or failed.
 ## 1. Prepare access and tools
-The release maintainer owns this procedure. Work in a dedicated clone with Git, Bash 3.2 or newer,
+The release maintainer owns this procedure. Use a clean checkout (a dedicated clone is optional) with Git, Bash 3.2 or newer,
-and two supported Go toolchains available. The checker supports the stock macOS
+a maintained Go 1.25 patch, and the compiler needed for native race tests. The checker supports the stock macOS
 Bash; its filename enumeration is null-delimited, including names with whitespace. Configure private-host Git and Go module
 access through the normal credential manager before starting. Keep tokens, passwords,
 SSH material, and environment dumps outside the repository and command transcript.
@@ -37,23 +40,24 @@ git remote get-url origin
 git ls-remote origin HEAD
 ```
-The remote URL must equal the authoritative URL above. Select the latest supported
+The remote URL must equal the authoritative URL above. Acquire the selected
-patch in the Go 1.25 line and a newer supported toolchain. The values below are the
+toolchain and dependencies explicitly. For example, with the maintained patch
-toolchains used while this runbook was introduced; update them to supported patch
+used when this procedure was simplified:
 releases during candidate preparation and record the actual versions in the release
 note or validation record.
 ```sh
-export CONFIGKIT_BASELINE_TOOLCHAIN=go1.25.5
+export CONFIGKIT_BASELINE_TOOLCHAIN=go1.25.14
 export CONFIGKIT_NEWER_TOOLCHAIN=go1.26.7
 GOTOOLCHAIN="$CONFIGKIT_BASELINE_TOOLCHAIN" go version
 GOTOOLCHAIN="$CONFIGKIT_NEWER_TOOLCHAIN" go version
 GOTOOLCHAIN="$CONFIGKIT_BASELINE_TOOLCHAIN" go mod download
 GOTOOLCHAIN="$CONFIGKIT_NEWER_TOOLCHAIN" go mod download
 ```
-Those commands explicitly acquire toolchains and dependencies. The checker itself
+Keep toolchains maintained, but do not require latest-version discovery for each
-sets `GOPROXY=off` and fails if its required cache is incomplete.
+release. The checker sets `GOPROXY=off` and fails if the cache is incomplete.
 Toolchain and YAML-dependency update research belongs to periodic maintenance or
 relevant dependency changes. No renewed approval of an unchanged pin is required.
 Use Bash with `set -euo pipefail` for the command blocks below so any failed gate
 stops the sequence. Publication requires user authorization; the agent policy's
 local-commit authorization is not permission to push or release.
 ## 2. Select the version and review compatibility
@@ -63,7 +67,7 @@ For the first release, review the whole public surface and current contracts.
 ```sh
 release_version=v0.1.0
 printf '%s\n' "$release_version" | grep -Eq '^v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)$'
-git show-ref --verify --quiet "refs/tags/$release_version" && exit 1 || :
+if git show-ref --verify --quiet "refs/tags/$release_version"; then exit 1; fi
 if git ls-remote --exit-code --tags origin "refs/tags/$release_version" >/dev/null; then
  printf 'remote tag already exists: %s\n' "$release_version" >&2
  exit 1
@@ -79,16 +83,9 @@ intentional incompatible minor-release change must be explained with consumer ac
 patch releases must remain compatible within their minor line. Review the maintained
 consumer examples and the migration guide even when signatures did not change.
-Reassess `go.yaml.in/yaml/v4` rather than using `@latest` implicitly:
+When dependencies change, review parser behavior and migration impact as part of
-
+that change. Keep Compatibility accurate about the dependency pin, but do not
-```sh
+perform an external version survey for every patch release.
 go list -m -versions go.yaml.in/yaml/v4
 go list -m -json go.yaml.in/yaml/v4@latest
 ```
 If changing the explicit pin, make that a reviewed dependency change and rerun the
 complete checker, especially parser policy, limits, diagnostics, and rendering tests.
 If retaining a prerelease pin, record that decision in Compatibility.
 ## 3. Write the release note
@@ -100,55 +97,46 @@ release note until there is a real candidate and reviewed content.
 ## 4. Validate the source candidate
-Run the complete checker on Linux from the repository root after dependencies have been
+Before release validation, finish compatibility review, inspect the diff and file
-acquired. It validates module manifests in a disposable copy, both supported Go
+list for unintended content or credentials, retire completed roadmaps, repair
-toolchains, offline default tests, the native race detector, vet, native builds,
+links, and review the release note. These are ordinary preparation tasks the
-CGO-disabled Linux cross-builds, formatting and whitespace (including untracked files),
+executing agent may perform, not separate human approvals or evidence records.
-examples, package isolation, and local documentation links.
+Ask the maintainer only for an unresolved product decision or missing authority.
 Commit the candidate, staging only its intended changes, then run the checker
 once against that clean commit. Do not run both everyday and release checkers to
 repeat the same gates.
 ```sh
-./scripts/release-check.sh
+git status --short
-```
+# Stage the specific files belonging to the candidate, then review:
-
+git diff --staged
 `go vet` is the repository's static-analysis baseline. No additional linter is
 claimed. Links to current ConfigKit files and headings are strict. Recorded links to
 sibling consumer source are checked when those checkouts exist and are otherwise
 inapplicable in an isolated clone; their immutable revisions remain recorded in the
 extraction inventory.
 Complete these manual gates and record their evidence with the candidate:
 - The maintainer reviews compatibility and downstream migration impact against
  `docs/config.md`, Go API comments, and the consumer guide.
 - The maintainer inspects `git status --short`, `git diff`, and the candidate file
  list for credentials, private data, generated output, unintended files, and
  unrelated changes.
 - The maintainer records a successful native checker run on Linux, including
  filesystem capability tests. Missing required Linux evidence blocks release;
  no macOS run, sign-off, or cross-build result is required.
 - The maintainer removes completed, obsolete documents under `docs/roadmap/`, repairs
  inbound links, and reruns the checker. ADR rationale remains historical.
 - The maintainer reviews the exact version-matched release note for accuracy and
  confirms it describes only deliverables that will actually be published.
 ## 5. Commit, push, and record the candidate
 Commit all candidate source, contract, example, roadmap-retirement, and release-note
 changes, rerun the checker against that clean commit, then push only `main` and record
 the exact commit in Git metadata local to the clone:
 ```sh
 git add .
 git commit --message "Prepare ConfigKit $release_version"
 ./scripts/release-check.sh
 test -z "$(git status --porcelain=v1 --untracked-files=all)"
-git push origin HEAD:refs/heads/main
+candidate_commit=$(git rev-parse HEAD)
-git rev-parse HEAD | tee .git/configkit-release-candidate
+./scripts/release-check.sh
-candidate_commit=$(cat .git/configkit-release-candidate)
+test "$(git rev-parse HEAD)" = "$candidate_commit"
 test -z "$(git status --porcelain=v1 --untracked-files=all)"
 printf '%s\n' "$candidate_commit" > "$(git rev-parse --git-path configkit-release-candidate)"
 ```
-If review changes the source after this point, create and validate a new candidate;
+If the final candidate is already committed, omit the staging and commit commands;
-do not reuse the recorded commit.
+do not create an empty commit. The checker validates module manifests in a
 disposable copy, formatting, whitespace, the full offline suite once with the race
 detector and verbose skip reporting, vet once, and CGO-disabled Linux amd64/arm64
 builds. The suite includes examples, consumer fixtures, documentation links, and
 package boundaries; no separate reruns are required. No additional linter is
 claimed. Sibling-consumer links are checked when those checkouts exist and are
 otherwise inapplicable in an isolated checkout.
 A changed candidate requires validation again. Do not reuse a recorded candidate
 from an older revision. The record is written only after successful local checks.
 ## 5. Prepare publication
 The following guarded sequence pushes only `main` and the selected tag. Local
 validation failures block it; CI does not. Keep the selected `release_version`
 from step 2 in the same shell. If starting a new shell, set it explicitly again.
 ## 6. Run publication guards
@@ -156,14 +144,12 @@ Immediately before tagging, fetch the authoritative branch and tags, restore the
 recorded variables if this is a new shell, and execute every guard:
 ```sh
-release_version=v0.1.0
+candidate_commit=$(cat "$(git rev-parse --git-path configkit-release-candidate)")
 candidate_commit=$(cat .git/configkit-release-candidate)
 git fetch --prune origin main
 git fetch --tags origin
 test "$(git branch --show-current)" = main
 test -z "$(git status --porcelain=v1 --untracked-files=all)"
 test "$(git rev-parse HEAD)" = "$candidate_commit"
 test "$(git rev-parse refs/remotes/origin/main)" = "$candidate_commit"
 test "$(git remote get-url origin)" = 'https://gitea.maximumdirect.net/eric/ConfigKit.git'
 printf '%s\n' "$release_version" | grep -Eq '^v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)$'
 test -f "docs/releases/$release_version.md"
@@ -171,17 +157,22 @@ test "$(sed -n '1p' "docs/releases/$release_version.md")" = "# ConfigKit $releas
 for heading in Summary Compatibility Upgrade Changes; do
  grep -Fxq "## $heading" "docs/releases/$release_version.md"
 done
-git show-ref --verify --quiet "refs/tags/$release_version" && exit 1 || :
+if git show-ref --verify --quiet "refs/tags/$release_version"; then exit 1; fi
 if git ls-remote --exit-code --tags origin "refs/tags/$release_version" >/dev/null; then
  printf 'remote tag already exists: %s\n' "$release_version" >&2
  exit 1
 else
  test $? -eq 2
 fi
 git push origin HEAD:refs/heads/main
 git fetch origin main
 test "$(git rev-parse refs/remotes/origin/main)" = "$candidate_commit"
 test "$(git rev-parse HEAD)" = "$candidate_commit"
 test -z "$(git status --porcelain=v1 --untracked-files=all)"
 ```
-Confirm the recorded automated and manual approvals apply to exactly
+The recorded local validation must apply to exactly `$candidate_commit`. No
-`$candidate_commit`. A successful older run is not evidence for a changed commit.
+separate human sign-off, CI status, or manual evidence document is required.
 ## 7. Tag and publish the exact ref
@@ -194,15 +185,17 @@ test "$(git rev-list -n 1 "$release_version")" = "$candidate_commit"
 git push origin "refs/tags/$release_version:refs/tags/$release_version"
 ```
-The pushed tag completes the declared source-only publication. No Gitea release
+A successful push of the intended tag completes the release. Report success now;
-object or binary upload is required.
+do not wait for CI, module propagation, or any post-publication check. No Gitea
 release object or binary upload is required.
-## 8. Verify publication and clean consumer retrieval
+## 8. Optional post-publication checks
-Verify the authoritative tag and then retrieve that exact version into a new module
+Only when useful or requested, read back the remote tag or retrieve the exact
-without a local `replace` directive. Private-host credentials must already be
+version into a new module without a local `replace` directive. These checks are
-configured. Use direct origin retrieval unless an explicitly approved internal Go
+optional and non-gating; their failure or unavailability does not delay release
-proxy is the publication channel.
+completion. Do not poll CI or wait for module propagation. Private-host credentials
 must already be configured. Example direct-origin verification:
 ```sh
 remote_tag_commit=$(git ls-remote origin "refs/tags/$release_version^{}" | awk '{print $1}')
@@ -229,13 +222,13 @@ EOF
 rm -rf -- "$consumer_dir"
 ```
-The final `go list` output must show the exact module path and `$release_version`.
+If performed, the final `go list` output should show the exact module path and
-Record the result with the release evidence.
+`$release_version`. Report optional verification separately from publication success.
 ## 9. Handle failures without replacement
-Before publication, fix the candidate, rerun every gate, commit, push, and record a
+Before publication, fix and commit the candidate, validate it, record the new
-new exact candidate. An unpublished local tag may be deleted only after verifying it
+exact candidate, and repeat the guarded publication sequence. An unpublished local tag may be deleted only after verifying it
 was never pushed or used by another release channel.
 After publication, never move, delete, or recreate the tag and never replace its
--- a/docs/releases/v0.4.0.md
+++ b/docs/releases/v0.4.0.md
@@ -0,0 +1,56 @@
 # ConfigKit v0.4.0
 This release renames selected configuration profiles to overlays, intentionally
 breaking the previous naming contract without compatibility aliases or fallback.
 ## Summary
 Selected configuration now uses `Options.Overlay` and `overlays/<name>.yml`.
 Selection, merge rules, input precedence, and lifecycle behavior are unchanged.
 See the [selected-overlay contract](../config.md#selected-overlays).
 ## Compatibility
 This is a breaking minor release before v1.0.0. Four surfaces change:
 - Go API: `Options.Profile` becomes `Options.Overlay`, `LayerProfile` becomes
  `LayerOverlay`, and all seven `CodeProfile*` constants become `CodeOverlay*`.
 - Selected files: `profiles/<name>.yml` becomes `overlays/<name>.yml`; there is
  no legacy-directory fallback.
 - Provenance: the layer string changes from `profile` to `overlay`.
 - Structured diagnostics: the `profile.*` code prefix becomes `overlay.*`.
 The old Go identifiers are removed. Application-owned concepts such as
 `ModelProfile` and `model_profile` are unchanged. Ordinary explicit imports from
 a directory named `profiles` remain valid base inputs.
 The minimum Go version remains 1.25. Linux remains release-validated and macOS
 remains best-effort. The YAML dependency remains pinned to
 `go.yaml.in/yaml/v4 v4.0.0-rc.6`; this release does not change parser dependencies.
 ## Upgrade
 Update the dependency:
 ```sh
 go get gitea.maximumdirect.net/eric/ConfigKit@v0.4.0
 ```
 Rename the affected Go identifiers, move selected files into `overlays/`, update
 any handling of provenance-layer and diagnostic-code strings, and rebuild.
 The maintained example helper is now `LoadNarratioOverlay` rather than
 `LoadNarratioProfile`. Application CLI flag names remain application-owned;
 ConfigKit does not require renaming domain-specific profile concepts.
 See the [migration guide](../consumers/README.md#selected-overlay-migration).
 ## Changes
 - Rename the selected feature consistently across the public facade, internal
  engine, diagnostics, source labels, examples, and current documentation.
 - Add regression coverage for the new directory, absence of legacy fallback,
  public values, explanations, and preservation of application profile fields.
 - Align contributor policies with the current shared standard.
 - Simplify release validation to one local minimum-toolchain check. CI is not a
  release gate; successful publication of the intended tag completes the
  source-only release. See the [release procedure](../release.md).
 - Retire completed overlay and release-workflow planning documents to Git history.
--- a/docs/roadmap/deferred.md
+++ b/docs/roadmap/deferred.md
@@ -15,7 +15,7 @@ The initial release deliberately excludes:
 - automatic `conf.d` discovery;
 - remote imports, arbitrary providers, and additional configuration formats;
- custom merge strategies, sequence merging, reset operators, and profile inheritance;
+- custom merge strategies, sequence merging, reset operators, and overlay inheritance;
 - parser-specific or custom structural-decoding extension APIs;
 - generic dynamic-subtree conversion and module-registry APIs;
 - automatic schema migrations;
--- a/examples/consumers/consumers.go
+++ b/examples/consumers/consumers.go
@@ -29,14 +29,14 @@ type NarratioConfig struct {
 // LoadNarratio loads the maintained import fixture with Narratio-shaped rules.
 func LoadNarratio(path string) (*configkit.Result[NarratioConfig], error) {
-	return LoadNarratioProfile(path, "")
+	return LoadNarratioOverlay(path, "")
 }
-// LoadNarratioProfile selects a ConfigKit configuration overlay independently
+// LoadNarratioOverlay selects a ConfigKit configuration overlay independently
 // from the application's ModelProfile field.
-func LoadNarratioProfile(path, profile string) (*configkit.Result[NarratioConfig], error) {
+func LoadNarratioOverlay(path, overlay string) (*configkit.Result[NarratioConfig], error) {
 	return configkit.Load(configkit.File(path), configkit.Options[NarratioConfig]{
-		Imports: true, Profile: profile,
+		Imports: true, Overlay: overlay,
 		Definition: configkit.Definition[NarratioConfig]{
 			Defaults: func() NarratioConfig { return NarratioConfig{PollInterval: time.Minute} },
 			Resolve:  resolveNarratio,
--- a/examples/consumers/consumers_test.go
+++ b/examples/consumers/consumers_test.go
@@ -92,10 +92,13 @@ func TestMaintainedConsumerFixturesPreserveDomainOutcomes(t *testing.T) {
 	if origin, ok := narratio.Metadata().Lookup(configkit.Keys("artifacts", "transcript", "output")); !ok || origin.Origin.Layer != configkit.LayerResolution {
 		t.Fatalf("artifact origin = %#v, %v", origin, ok)
 	}
-	profiled, err := consumers.LoadNarratioProfile(fixture("narratio", "pipeline.yml"), "testing")
+	overlaid, err := consumers.LoadNarratioOverlay(fixture("narratio", "pipeline.yml"), "testing")
-	if err != nil || profiled.Config.PollInterval.String() != "2m0s" ||
+	if err != nil || overlaid.Config.PollInterval.String() != "2m0s" ||
-		profiled.Config.ModelProfile != "concise" || len(profiled.Sources()) != 3 {
+		overlaid.Config.ModelProfile != "concise" || len(overlaid.Sources()) != 3 {
-		t.Fatalf("configuration/application profiles = %#v, %v", profiled, err)
+		t.Fatalf("configuration overlay and application model profile = %#v, %v", overlaid, err)
 	}
 	if source := overlaid.Sources()[2]; source.Label != "overlays/testing.yml" || source.Layer != configkit.LayerOverlay {
 		t.Fatalf("Narratio overlay source = %#v", source)
 	}
 	notarius, err := consumers.LoadNotarius(fixture("notarius", "config.yml"))
@@ -200,7 +203,7 @@ func TestMigrationFixturesFailWithStableCodesAndPaths(t *testing.T) {
 			if len(diagnostics) == 0 || diagnostics[0].Code != test.code || diagnostics[0].Path.String() != test.path {
 				t.Fatalf("diagnostics = %#v", diagnostics)
 			}
-			if strings.Contains(diagnostics[0].Message, "wrong-before-profile") {
+			if strings.Contains(diagnostics[0].Message, "wrong-before-overlay") {
 				t.Fatalf("diagnostic exposed raw parser input: %#v", diagnostics[0])
 			}
 		})
--- a/examples/consumers/testdata/narratio/overlays/testing.yml
+++ b/examples/consumers/testdata/narratio/overlays/testing.yml
--- a/internal/engine/directives.go
+++ b/internal/engine/directives.go
@@ -181,24 +181,24 @@ func nodeImportDiagnostic(code Code, path Path, message string, node *document.N
 	return Diagnostic{Code: code, Severity: SeverityError, Path: path, Message: message, Primary: &location}
 }
-func profileDirectiveDiagnostics(node *document.Node, current Path) []Diagnostic {
+func overlayDirectiveDiagnostics(node *document.Node, current Path) []Diagnostic {
 	if node.Kind == document.Mapping {
 		for _, entry := range node.Mapping {
 			childPath := current.Key(entry.Key)
 			if entry.Key == directiveKey {
 				location := publicLocation(entry.KeyLocation)
 				return []Diagnostic{{
-					Code: CodeProfileDirective, Severity: SeverityError, Path: childPath,
+					Code: CodeOverlayDirective, Severity: SeverityError, Path: childPath,
-					Message: "profiles cannot contain configuration directives", Primary: &location,
+					Message: "overlays cannot contain configuration directives", Primary: &location,
 				}}
 			}
-			if diagnostics := profileDirectiveDiagnostics(entry.Value, childPath); len(diagnostics) != 0 {
+			if diagnostics := overlayDirectiveDiagnostics(entry.Value, childPath); len(diagnostics) != 0 {
 				return diagnostics
 			}
 		}
 	} else if node.Kind == document.Sequence {
 		for index, child := range node.Sequence {
-			if diagnostics := profileDirectiveDiagnostics(child, current.Index(index)); len(diagnostics) != 0 {
+			if diagnostics := overlayDirectiveDiagnostics(child, current.Index(index)); len(diagnostics) != 0 {
 				return diagnostics
 			}
 		}
--- a/internal/engine/explain_render.go
+++ b/internal/engine/explain_render.go
@@ -38,7 +38,7 @@ func (r *Inspection) WriteExplanation(output io.Writer, path Path) error {
 		rendered.WriteString("  - representation: ")
 		if change.Origin.Operation == ChangeDecoding {
 			rendered.WriteString("input to canonical typed\n")
-		} else if change.Origin.Layer == LayerBase || change.Origin.Layer == LayerProfile || change.Origin.Layer == LayerCLI {
+		} else if change.Origin.Layer == LayerBase || change.Origin.Layer == LayerOverlay || change.Origin.Layer == LayerCLI {
 			rendered.WriteString("policy-validated input\n")
 		} else {
 			rendered.WriteString("canonical typed\n")
--- a/internal/engine/explain_test.go
+++ b/internal/engine/explain_test.go
@@ -21,13 +21,13 @@ type explanationConcurrency struct {
 	} `yaml:"transcription"`
 }
-func TestExplainShowsDefaultBaseAndEffectiveProfileValue(t *testing.T) {
+func TestExplainShowsDefaultBaseAndEffectiveOverlayValue(t *testing.T) {
 	directory := t.TempDir()
 	mainPath := writeImportFile(t, directory, "config.yml", "configkit:\n  imports: [{path: transcription.yml}]\n")
 	writeImportFile(t, directory, "transcription.yml", "transcription:\n  concurrency: 8\n")
-	writeImportFile(t, directory, filepath.Join("profiles", "testing.yml"), "transcription:\n  concurrency: 1\n")
+	writeImportFile(t, directory, filepath.Join("overlays", "testing.yml"), "transcription:\n  concurrency: 1\n")
 	result, err := testLoad[explanationConcurrency](File(mainPath), Options[explanationConcurrency]{
-		Imports: true, Profile: "testing",
+		Imports: true, Overlay: "testing",
 		Definition: Definition[explanationConcurrency]{Defaults: func() explanationConcurrency {
 			value := explanationConcurrency{}
 			value.Transcription.Concurrency = 4
@@ -44,11 +44,17 @@ func TestExplainShowsDefaultBaseAndEffectiveProfileValue(t *testing.T) {
 	if got := explanationValues(explanation); !reflect.DeepEqual(got, []string{"4\n", "8\n", "1\n"}) {
 		t.Fatalf("history values = %#v", got)
 	}
-	if explanation.Effective.YAML != "1\n" || explanation.Origin.Layer != LayerProfile ||
+	if explanation.Effective.YAML != "1\n" || explanation.Origin.Layer != LayerOverlay ||
 		len(explanation.Origin.Locations) != 1 || explanation.Origin.Locations[0].SourceID != "source-3" ||
 		explanation.Origin.Locations[0].Line != 2 {
 		t.Fatalf("effective explanation = %#v", explanation)
 	}
 	var rendered bytes.Buffer
 	if err := result.WriteExplanation(&rendered, Keys("transcription", "concurrency")); err != nil ||
 		!strings.Contains(rendered.String(), `layer="overlay"`) ||
 		!strings.Contains(rendered.String(), `label="overlays/testing.yml"`) {
 		t.Fatalf("rendered explanation = %v\n%s", err, rendered.String())
 	}
 }
 type explanationConfig struct {
@@ -70,18 +76,18 @@ func TestExplainReplaysCLIResolutionContainersAndSafeHistoricalValues(t *testing
 	directory := t.TempDir()
 	mainPath := writeImportFile(t, directory, "config.yml", `concurrency: 8
 equal: same
-limit: wrong-before-profile
+limit: wrong-before-overlay
 items: [base, removed]
 labels: {base: retained}
 dynamic: {retired: HISTORICAL_EXPLAIN_CANARY, public: visible}
 credential: APP_SECRET
 classified: APP_SECRET
 `)
-	writeImportFile(t, directory, filepath.Join("profiles", "testing.yml"), `concurrency: 1
+	writeImportFile(t, directory, filepath.Join("overlays", "testing.yml"), `concurrency: 1
 equal: same
 limit: 7
-items: [profile]
+items: [overlay]
-labels: {profile: retained}
+labels: {overlay: retained}
 dynamic: selected
 `)
 	result, err := testLoadWithSecretLookup(File(mainPath), func(name string) (string, bool) {
@@ -90,7 +96,7 @@ dynamic: selected
 		}
 		return "RESOLVED_EXPLAIN_CANARY", true
 	}, Options[explanationConfig]{
-		Profile: "testing",
+		Overlay: "testing",
 		Overrides: []Override{
 			{Path: Keys("concurrency"), Value: 2, Flag: "--concurrency"},
 			{Path: Keys("equal"), Value: "same", Flag: "--equal"},
@@ -130,7 +136,7 @@ dynamic: selected
 	if got := explanationValues(concurrency); !reflect.DeepEqual(got, []string{"4\n", "8\n", "1\n", "2\n", "3\n"}) {
 		t.Fatalf("concurrency history = %#v", got)
 	}
-	if got := historyValueLayers(concurrency); !reflect.DeepEqual(got, []Layer{LayerDefault, LayerBase, LayerProfile, LayerCLI, LayerResolution}) {
+	if got := historyValueLayers(concurrency); !reflect.DeepEqual(got, []Layer{LayerDefault, LayerBase, LayerOverlay, LayerCLI, LayerResolution}) {
 		t.Fatalf("concurrency layers = %#v", got)
 	}
 	if concurrency.History[4].Before.YAML != "2\n" || concurrency.History[4].Reasons[0] != "normalized\nconcurrency" ||
@@ -149,7 +155,7 @@ dynamic: selected
 	}
 	limit, _ := result.Explain(Keys("limit"))
-	if got := explanationValues(limit); !reflect.DeepEqual(got, []string{"0\n", "wrong-before-profile\n", "7\n"}) {
+	if got := explanationValues(limit); !reflect.DeepEqual(got, []string{"0\n", "wrong-before-overlay\n", "7\n"}) {
 		t.Fatalf("overridden invalid input was not retained: %#v", got)
 	}
 	removed, ok := result.Explain(Keys("dynamic", "retired"))
@@ -182,7 +188,7 @@ dynamic: selected
 	}
 	labels, _ := result.Explain(Keys("labels"))
 	if len(labels.History) != 4 || !strings.Contains(labels.Effective.YAML, "default: retained") ||
-		!strings.Contains(labels.Effective.YAML, "profile: retained") || !strings.Contains(labels.Effective.YAML, "cli: retained") {
+		!strings.Contains(labels.Effective.YAML, "overlay: retained") || !strings.Contains(labels.Effective.YAML, "cli: retained") {
 		t.Fatalf("composite mapping history = %#v", labels)
 	}
 	if labels.Origin.Layer != LayerCLI || len(labels.Origin.Locations) != 3 {
@@ -258,7 +264,7 @@ dynamic: selected
 	var invalidInput bytes.Buffer
 	if err := result.WriteExplanation(&invalidInput, Keys("limit")); err != nil ||
 		!strings.Contains(invalidInput.String(), "policy-validated input") ||
-		strings.Contains(invalidInput.String(), "wrong-before-profile\n    source: layer=\"base\"\n    before (canonical typed)") {
+		strings.Contains(invalidInput.String(), "wrong-before-overlay\n    source: layer=\"base\"\n    before (canonical typed)") {
 		t.Fatalf("historical representation rendering = %v\n%s", err, invalidInput.String())
 	}
 }
@@ -340,8 +346,8 @@ func TestExplanationReconcilesDefaultsAfterInputReplacement(t *testing.T) {
 				if cli {
 					opts.Overrides = []Override{{Path: Keys("m"), Value: map[string]any{"b": 2}, Flag: "--m"}}
 				} else {
-					writeImportFile(t, root, "profiles/p.yml", "m: {b: 2}\n")
+					writeImportFile(t, root, "overlays/p.yml", "m: {b: 2}\n")
-					opts.Profile = "p"
+					opts.Overlay = "p"
 				}
 				result, err := testLoad(File(main), opts)
 				if err != nil {
--- a/internal/engine/glob_test.go
+++ b/internal/engine/glob_test.go
@@ -229,11 +229,11 @@ func TestGlobTraversalBoundsNonmatchesAndAcceptedCandidates(t *testing.T) {
 	}
 }
-func TestFilesystemContextIsValidatedWithoutImportsOrActiveProfile(t *testing.T) {
+func TestFilesystemContextIsValidatedWithoutImportsOrActiveOverlay(t *testing.T) {
 	directory := t.TempDir()
 	mainPath := writeImportFile(t, directory, "main.yml", "items: {root: root}\n")
 	result, err := testLoad[importTestConfig](File(mainPath), Options[importTestConfig]{
-		Profile: "default", Filesystem: &FilesystemContext{Root: directory},
+		Overlay: "default", Filesystem: &FilesystemContext{Root: directory},
 	})
 	if err != nil || result.Config.Items["root"] != "root" {
 		t.Fatalf("file filesystem context = %#v, %v", result, err)
@@ -247,9 +247,9 @@ func TestFilesystemContextIsValidatedWithoutImportsOrActiveProfile(t *testing.T)
 		t.Fatalf("byte filesystem context = %#v, %v", result, err)
 	}
 	requireLoadCode(t, Bytes("memory.yml", []byte("{}\n")), Options[importTestConfig]{Filesystem: &FilesystemContext{BaseDir: directory}}, CodeOptionsInvalid)
-	defaultsOnly, err := testLoad[importTestConfig](NoSource(), Options[importTestConfig]{Profile: "default"})
+	defaultsOnly, err := testLoad[importTestConfig](NoSource(), Options[importTestConfig]{Overlay: "default"})
 	if err != nil || defaultsOnly == nil {
-		t.Fatalf("default profile with NoSource = %#v, %v", defaultsOnly, err)
+		t.Fatalf("default overlay with NoSource = %#v, %v", defaultsOnly, err)
 	}
 	if runtime.GOOS == "linux" || runtime.GOOS == "darwin" {
--- a/internal/engine/imports_test.go
+++ b/internal/engine/imports_test.go
@@ -89,6 +89,18 @@ settings:
 	}
 }
 func TestLoadImportsFromProfilesDirectoryAsBaseInput(t *testing.T) {
 	directory := t.TempDir()
 	mainPath := writeImportFile(t, directory, "main.yml", "configkit: {imports: [{path: profiles/shared.yml}]}\n")
 	writeImportFile(t, directory, "profiles/shared.yml", "settings: {root: imported}\n")
 	result, err := testLoad[importTestConfig](File(mainPath), Options[importTestConfig]{Imports: true})
 	if err != nil || result.Config.Settings.Root != "imported" || len(result.Sources()) != 2 ||
 		result.Sources()[1].Layer != LayerBase {
 		t.Fatalf("profiles import = %#v, %v", result, err)
 	}
 }
 func TestLoadRejectsImportConflictsAndFragmentVersions(t *testing.T) {
 	t.Run("all duplicate claimants", func(t *testing.T) {
 		directory := t.TempDir()
--- a/internal/engine/load.go
+++ b/internal/engine/load.go
@@ -19,17 +19,17 @@ type Definition[T any] struct {
 }
 // Options contains the application definition and per-load input selections.
-// Imports enables explicit path and glob imports; Profile selects one fixed profile
+// Imports enables explicit path and glob imports; Overlay selects one fixed overlay;
-// overlay; Overrides contains only values explicitly supplied by an application CLI.
+// Overrides contains only values explicitly supplied by an application CLI.
 type Options[T any] struct {
 	Definition Definition[T]
 	Imports    bool
-	Profile    string
+	Overlay    string
 	Filesystem *FilesystemContext
 	Overrides  []Override
 }
-// FilesystemContext supplies filesystem roots for imports and profiles.
+// FilesystemContext supplies filesystem roots for imports and overlays.
 type FilesystemContext struct {
 	BaseDir string
 	Root    string
@@ -113,7 +113,7 @@ func (r *Inspection) Diagnostics() []Diagnostic {
 }
 // Load parses and strictly decodes zero or one selected source, explicitly enabled
-// imports, and one selected profile. It accepts at most one Options value and
+// imports, and one selected overlay. It accepts at most one Options value and
 // returns no result when any error is reported.
 func Load[T any](source Source, secrets SecretBinding, supplied ...Options[T]) (*Loaded[T], error) {
 	return loadWithSecretLookup(source, secrets, os.LookupEnv, supplied...)
--- a/internal/engine/load_input.go
+++ b/internal/engine/load_input.go
@@ -25,7 +25,7 @@ func assembleBaseInput[T any](source Source, options Options[T]) (assembledInput
 		input.document = input.composition.root
 	} else {
 		input.sources = sourceInfos(parsed.source)
-		if options.Filesystem != nil && !activeProfile(options.Profile) {
+		if options.Filesystem != nil && !activeOverlay(options.Overlay) {
 			if diagnostic := validateFilesystemContext(source, options.Filesystem, parsed); diagnostic != nil {
 				return input, []Diagnostic{*diagnostic}
 			}
@@ -40,17 +40,17 @@ func assembleBaseInput[T any](source Source, options Options[T]) (assembledInput
 }
 func applyInputLayers[T any](source Source, options Options[T], input assembledInput) (assembledInput, []Diagnostic) {
-	if !activeProfile(options.Profile) && len(options.Overrides) == 0 {
+	if !activeOverlay(options.Overlay) && len(options.Overrides) == 0 {
 		return input, nil
 	}
 	composition, diagnostics := compositionForInput(input)
 	if len(diagnostics) != 0 {
 		return input, diagnostics
 	}
-	if activeProfile(options.Profile) {
+	if activeOverlay(options.Overlay) {
-		composition, input.sources, diagnostics = loadProfileDocument(
+		composition, input.sources, diagnostics = loadSelectedOverlayDocument(
 			source, options.Filesystem, input.parsed, composition, input.sources,
-			options.Profile, options.Definition.Version, defaultImportLimits(),
+			options.Overlay, options.Definition.Version, defaultImportLimits(),
 		)
 		if len(diagnostics) != 0 {
 			return input, diagnostics
@@ -69,7 +69,7 @@ func applyInputLayers[T any](source Source, options Options[T], input assembledI
 	return input, nil
 }
-// compositionForInput initializes one handoff for profiles and CLI, including
+// compositionForInput initializes one handoff for overlays and CLI, including
 // defaults-only CLI input. Raw source bytes and mapping keys retain their budgets.
 func compositionForInput(input assembledInput) (*composedDocument, []Diagnostic) {
 	if input.composition != nil {
--- a/internal/engine/metadata_test.go
+++ b/internal/engine/metadata_test.go
@@ -60,8 +60,8 @@ func TestHistoricalPathsExposeHiddenBaseOwnershipWithoutResolvingBaseSecrets(t *
 			root := writeImportFile(t, dir, "main.yml", "configkit:\n  imports: [{path: first.yml}, {path: second.yml}]\ncredential: CONFIGKIT_HISTORY_UNUSED_PROD_KEY\n")
 			writeImportFile(t, dir, "first.yml", "definitions: {recap: {prompt: recap}}\n")
 			writeImportFile(t, dir, "second.yml", "definitions: {recap: {output: recap.md}}\n")
-			writeImportFile(t, dir, "profiles/testing.yml", "definitions: null\ncredential: "+credential+"\n")
+			writeImportFile(t, dir, "overlays/testing.yml", "definitions: null\ncredential: "+credential+"\n")
-			result, err := testLoad[config](File(root), Options[config]{Imports: true, Profile: "testing"})
+			result, err := testLoad[config](File(root), Options[config]{Imports: true, Overlay: "testing"})
 			if err != nil {
 				t.Fatal(err)
 			}
--- a/internal/engine/options.go
+++ b/internal/engine/options.go
@@ -10,8 +10,8 @@ func selectOptions[T any](source Source, supplied []Options[T]) (Options[T], []D
 	}
 	var diagnostics []Diagnostic
 	definition := options.Definition
-	if !validProfileName(options.Profile) {
+	if !validOverlayName(options.Overlay) {
-		diagnostics = append(diagnostics, optionDiagnostic(CodeOptionsInvalid, "profile name must contain only ASCII letters, digits, underscore, or hyphen"))
+		diagnostics = append(diagnostics, optionDiagnostic(CodeOptionsInvalid, "overlay name must contain only ASCII letters, digits, underscore, or hyphen"))
 	}
 	if options.Filesystem != nil {
 		diagnostics = append(diagnostics, filesystemOptionDiagnostics(source, options.Filesystem)...)
@@ -19,11 +19,11 @@ func selectOptions[T any](source Source, supplied []Options[T]) (Options[T], []D
 	if source.kind == sourceNone && options.Imports {
 		diagnostics = append(diagnostics, optionDiagnostic(CodeOptionsInvalid, "NoSource cannot enable imports"))
 	}
-	if source.kind == sourceNone && options.Profile != "" && options.Profile != "default" {
+	if source.kind == sourceNone && options.Overlay != "" && options.Overlay != "default" {
-		diagnostics = append(diagnostics, optionDiagnostic(CodeOptionsInvalid, "NoSource cannot select an active profile"))
+		diagnostics = append(diagnostics, optionDiagnostic(CodeOptionsInvalid, "NoSource cannot select an active overlay"))
 	}
-	if options.Filesystem == nil && (source.kind == sourceBytes || source.kind == sourceReader) && (options.Imports || activeProfile(options.Profile)) {
+	if options.Filesystem == nil && (source.kind == sourceBytes || source.kind == sourceReader) && (options.Imports || activeOverlay(options.Overlay)) {
-		diagnostics = append(diagnostics, optionDiagnostic(CodeOptionsInvalid, "byte and reader imports or profiles require filesystem context"))
+		diagnostics = append(diagnostics, optionDiagnostic(CodeOptionsInvalid, "byte and reader imports or overlays require filesystem context"))
 	}
 	if definition.Version != nil {
 		if !definition.Version.Path.valid() {
--- a/internal/engine/overlay.go
+++ b/internal/engine/overlay.go
@@ -20,14 +20,14 @@ type displacedDefinition struct {
 func overlayDocuments(base *composedDocument, overlay *document.Node) (*composedDocument, []Diagnostic) {
 	if base == nil || base.root == nil || base.root.Kind != document.Mapping || overlay == nil || overlay.Kind != document.Mapping {
 		return nil, []Diagnostic{{
-			Code: CodeProfileInvalid, Severity: SeverityError,
+			Code: CodeOverlayInvalid, Severity: SeverityError,
-			Message: "profile overlay requires mapping document roots",
+			Message: "overlay requires mapping document roots",
 		}}
 	}
 	result := cloneComposedDocument(base)
-	mergeOverlayOrigin(result.origins, Path{}, overlay.Location, LayerProfile)
+	mergeOverlayOrigin(result.origins, Path{}, overlay.Location, LayerOverlay)
-	mergeOverlayMappings(result, result.root, overlay, Path{}, LayerProfile, true)
+	mergeOverlayMappings(result, result.root, overlay, Path{}, LayerOverlay, true)
-	result.applications = append(result.applications, historyApplication{layer: LayerProfile, value: overlay})
+	result.applications = append(result.applications, historyApplication{layer: LayerOverlay, value: overlay})
 	return result, nil
 }
--- a/internal/engine/overlay_test.go
+++ b/internal/engine/overlay_test.go
@@ -22,7 +22,7 @@ to_scalar: {child: old}
 	}
 	overlay := parseCompositionDocument(t, "source-2", `shared:
  changed: new
-  added: profile
+  added: overlay
 sequence: []
 nullable: null
 to_map: {child: new}
@@ -42,7 +42,7 @@ to_scalar: scalar
 	}{
 		{path: Keys("shared", "kept"), kind: document.String, text: "base"},
 		{path: Keys("shared", "changed"), kind: document.String, text: "new"},
-		{path: Keys("shared", "added"), kind: document.String, text: "profile"},
+		{path: Keys("shared", "added"), kind: document.String, text: "overlay"},
 		{path: Keys("sequence"), kind: document.Sequence},
 		{path: Keys("nullable"), kind: document.Null},
 		{path: Keys("to_map"), kind: document.Mapping},
@@ -62,7 +62,7 @@ to_scalar: scalar
 		t.Fatal("parent replacement retained a stale child origin")
 	}
 	shared := result.origins["/shared"]
-	if shared.Layer != LayerProfile || len(shared.Locations) != 2 {
+	if shared.Layer != LayerOverlay || len(shared.Locations) != 2 {
 		t.Fatalf("shared mapping origin = %#v", shared)
 	}
 	if len(result.overlays) != 5 {
--- a/internal/engine/override_test.go
+++ b/internal/engine/override_test.go
@@ -41,9 +41,9 @@ func TestOverridesRunAtHighestInputPrecedenceBeforeResolutionAndValidation(t *te
  labels: {base: retained}
  api_key: BASE_SECRET
 `)
-	writeImportFile(t, directory, filepath.Join("profiles", "testing.yml"), `settings:
+	writeImportFile(t, directory, filepath.Join("overlays", "testing.yml"), `settings:
-  target: profile
+  target: overlay
-  labels: {profile: retained}
+  labels: {overlay: retained}
 `)
 	validated := false
 	overrides := []Override{
@@ -62,7 +62,7 @@ func TestOverridesRunAtHighestInputPrecedenceBeforeResolutionAndValidation(t *te
 		}
 		return "credential-value", true
 	}, Options[overrideLifecycleConfig]{
-		Imports: true, Profile: "testing", Overrides: overrides,
+		Imports: true, Overlay: "testing", Overrides: overrides,
 		Definition: Definition[overrideLifecycleConfig]{
 			Defaults: func() overrideLifecycleConfig {
 				return overrideLifecycleConfig{Settings: overrideLifecycleSettings{Target: "default", Count: 9, Text: "default", Items: []string{"default"}}}
@@ -86,7 +86,7 @@ func TestOverridesRunAtHighestInputPrecedenceBeforeResolutionAndValidation(t *te
 		t.Fatalf("testLoadWithSecretLookup() error = %v", err)
 	}
 	want := overrideLifecycleSettings{
-		Target: "cli", Labels: map[string]string{"base": "retained", "profile": "retained", "cli": "selected"},
+		Target: "cli", Labels: map[string]string{"base": "retained", "overlay": "retained", "cli": "selected"},
 		APIKey: result.Config.Settings.APIKey,
 	}
 	if !validated || result.Config.Settings.Count != 0 || result.Config.Settings.Enabled || result.Config.Settings.Text != "" ||
@@ -95,7 +95,7 @@ func TestOverridesRunAtHighestInputPrecedenceBeforeResolutionAndValidation(t *te
 		t.Fatalf("effective settings = %#v", result.Config.Settings)
 	}
 	sources := result.Sources()
-	if len(sources) != 3+len(overrides) || sources[0].Layer != LayerBase || sources[1].Layer != LayerBase || sources[2].Layer != LayerProfile {
+	if len(sources) != 3+len(overrides) || sources[0].Layer != LayerBase || sources[1].Layer != LayerBase || sources[2].Layer != LayerOverlay {
 		t.Fatalf("sources = %#v", sources)
 	}
 	for index, override := range overrides {
@@ -104,7 +104,7 @@ func TestOverridesRunAtHighestInputPrecedenceBeforeResolutionAndValidation(t *te
 		}
 	}
 	history := result.Metadata().History(Keys("settings", "target"))
-	wantLayers := []Layer{LayerDefault, LayerBase, LayerProfile, LayerCLI, LayerResolution}
+	wantLayers := []Layer{LayerDefault, LayerBase, LayerOverlay, LayerCLI, LayerResolution}
 	if got := historyLayers(history); !reflect.DeepEqual(got, wantLayers) {
 		t.Fatalf("target history layers = %#v, want %#v; history %#v", got, wantLayers, history)
 	}
--- a/internal/engine/provenance_test.go
+++ b/internal/engine/provenance_test.go
@@ -16,7 +16,7 @@ type layeredConfig struct {
 	Shared struct {
 		Equal    string `yaml:"equal"`
 		Imported string `yaml:"imported"`
-		Profile  string `yaml:"profile"`
+		Overlay  string `yaml:"overlay"`
 	} `yaml:"shared"`
 	Values   []int                  `yaml:"values"`
 	Items    map[string]layeredItem `yaml:"items"`
@@ -40,7 +40,7 @@ nullable: base
 empty: {}
 `)
 	importPath := writeImportFile(t, directory, "imported.yml", "shared: {imported: base}\n")
-	profilePath := writeImportFile(t, directory, "profiles/testing.yml", `shared: {profile: selected}
+	overlayPath := writeImportFile(t, directory, "overlays/testing.yml", `shared: {overlay: selected}
 values: [3, 4]
 value: selected
 nullable: null
@@ -71,23 +71,23 @@ empty: {}
 	}
 	result, err := testLoad[layeredConfig](File(mainPath), Options[layeredConfig]{
-		Imports: true, Profile: "testing", Definition: definition,
+		Imports: true, Overlay: "testing", Definition: definition,
 	})
 	if err != nil {
 		var loadError *LoadError
 		_ = errors.As(err, &loadError)
 		t.Fatalf("%v: %#v", err, loadError.Diagnostics())
 	}
-	wantSources := []string{canonicalTestPath(t, mainPath), canonicalTestPath(t, importPath), canonicalTestPath(t, profilePath)}
+	wantSources := []string{canonicalTestPath(t, mainPath), canonicalTestPath(t, importPath), canonicalTestPath(t, overlayPath)}
 	sources := result.Sources()
 	gotSources := make([]string, len(sources))
 	for index, source := range sources {
 		gotSources[index] = source.Path
 	}
-	if !reflect.DeepEqual(gotSources, wantSources) || sources[2].Layer != LayerProfile {
+	if !reflect.DeepEqual(gotSources, wantSources) || sources[2].Layer != LayerOverlay {
 		t.Fatalf("sources = %#v", sources)
 	}
-	if result.Config.Shared.Equal != "same" || result.Config.Shared.Imported != "base" || result.Config.Shared.Profile != "selected" ||
+	if result.Config.Shared.Equal != "same" || result.Config.Shared.Imported != "base" || result.Config.Shared.Overlay != "selected" ||
 		!reflect.DeepEqual(result.Config.Values, []int{5}) || result.Config.Nullable != nil || result.Config.Derived != 7 ||
 		result.Config.Empty["retained"] != "default" {
 		t.Fatalf("configuration = %#v", result.Config)
@@ -100,13 +100,13 @@ empty: {}
 	empty, _ := metadata.Lookup(Keys("empty"))
 	firstValue, _ := metadata.Lookup(Keys("values").Index(0))
 	if !equal.Explicit || equal.Origin.Layer != LayerBase || derived.Explicit || derived.Origin.Operation != ChangeDerivedDefault ||
-		!nullable.Explicit || !nullable.Null || nullable.Origin.Layer != LayerProfile ||
+		!nullable.Explicit || !nullable.Null || nullable.Origin.Layer != LayerOverlay ||
-		!empty.Explicit || empty.Origin.Layer != LayerProfile || len(empty.Origin.Locations) != 2 ||
+		!empty.Explicit || empty.Origin.Layer != LayerOverlay || len(empty.Origin.Locations) != 2 ||
 		!firstValue.Explicit || firstValue.Origin.Operation != ChangeNormalization {
 		t.Fatalf("metadata = equal %#v derived %#v nullable %#v empty %#v value %#v", equal, derived, nullable, empty, firstValue)
 	}
 	if _, ok := metadata.Lookup(Keys("value", "child")); ok {
-		t.Fatal("profile-removed child remains effective")
+		t.Fatal("overlay-removed child remains effective")
 	}
 	if _, ok := metadata.Lookup(Keys("values").Index(1)); ok {
 		t.Fatal("resolution-removed sequence index remains effective")
@@ -116,10 +116,10 @@ empty: {}
 	}
 	assertHistoryLayersAndPaths(t, metadata.History(Keys("values").Index(1)),
-		[]Layer{LayerDefault, LayerBase, LayerProfile, LayerResolution},
+		[]Layer{LayerDefault, LayerBase, LayerOverlay, LayerResolution},
 		[]string{"/values/1", "/values/1", "/values", "/values"})
 	assertHistoryLayersAndPaths(t, metadata.History(Keys("value", "child")),
-		[]Layer{LayerDefault, LayerBase, LayerProfile},
+		[]Layer{LayerDefault, LayerBase, LayerOverlay},
 		[]string{"/value/child", "/value/child", "/value"})
 	removedHistory := metadata.History(Keys("items", "remove", "value"))
 	assertHistoryLayersAndPaths(t, removedHistory,
@@ -159,11 +159,11 @@ empty: {}
 	}
 }
-func TestSelectedProfileLoadsRemainIndependentConcurrently(t *testing.T) {
+func TestSelectedOverlayLoadsRemainIndependentConcurrently(t *testing.T) {
 	directory := t.TempDir()
 	mainPath := writeImportFile(t, directory, "main.yml", "values: [1, 2]\n")
-	writeImportFile(t, directory, "profiles/testing.yml", "values: [3, 4]\n")
+	writeImportFile(t, directory, "overlays/testing.yml", "values: [3, 4]\n")
-	options := Options[layeredConfig]{Profile: "testing"}
+	options := Options[layeredConfig]{Overlay: "testing"}
 	const loads = 16
 	results := make(chan *testResult[layeredConfig], loads)
@@ -200,7 +200,7 @@ func TestSelectedProfileLoadsRemainIndependentConcurrently(t *testing.T) {
 		if !reflect.DeepEqual(result.Config.Values, []int{3, 4}) {
 			t.Fatalf("concurrent result contaminated = %#v", result.Config.Values)
 		}
-		if info, ok := result.Metadata().Lookup(Keys("values")); !ok || info.Origin.Layer != LayerProfile {
+		if info, ok := result.Metadata().Lookup(Keys("values")); !ok || info.Origin.Layer != LayerOverlay {
 			t.Fatalf("concurrent metadata contaminated = %#v, %v", info, ok)
 		}
 	}
@@ -220,7 +220,7 @@ sequence: [first, second]
 composite: {first: first}
 `)
 	secondPath := writeImportFile(t, directory, "second.yml", "composite: {second: second}\n")
-	profilePath := writeImportFile(t, directory, "profiles/testing.yml", "equal: same\nprofile: profile\n")
+	overlayPath := writeImportFile(t, directory, "overlays/testing.yml", "equal: same\noverlay: overlay\n")
 	compositeSources := map[string]bool{
 		canonicalTestPath(t, mainPath):   true,
 		canonicalTestPath(t, firstPath):  true,
@@ -232,12 +232,12 @@ composite: {first: first}
 		Sequence  []string          `yaml:"sequence"`
 		Composite map[string]string `yaml:"composite"`
 		Equal     string            `yaml:"equal"`
-		Profile   string            `yaml:"profile"`
+		Overlay   string            `yaml:"overlay"`
 		CLIEqual  string            `yaml:"cli_equal"`
 	}
 	var callbackErr error
 	result, err := testLoad[config](File(mainPath), Options[config]{
-		Imports: true, Profile: "testing", Overrides: []Override{{Path: Keys("cli_equal"), Value: "same", Flag: "--cli-equal"}},
+		Imports: true, Overlay: "testing", Overrides: []Override{{Path: Keys("cli_equal"), Value: "same", Flag: "--cli-equal"}},
 		Definition: Definition[config]{Resolve: func(_ *config, resolution *Resolution) error {
 			check := func(ok bool, message string) {
 				if !ok && callbackErr == nil {
@@ -257,9 +257,9 @@ composite: {first: first}
 			fileOwner(Keys("main"), canonicalTestPath(t, mainPath))
 			fileOwner(Keys("imported"), canonicalTestPath(t, firstPath))
 			fileOwner(Keys("sequence").Index(1), canonicalTestPath(t, firstPath))
-			profile := fileOwner(Keys("equal"), canonicalTestPath(t, profilePath))
+			overlay := fileOwner(Keys("equal"), canonicalTestPath(t, overlayPath))
-			fileOwner(Keys("profile"), canonicalTestPath(t, profilePath))
+			fileOwner(Keys("overlay"), canonicalTestPath(t, overlayPath))
-			check(profile.Origin.Layer == LayerProfile, "profile replacement retained base ownership")
+			check(overlay.Origin.Layer == LayerOverlay, "overlay replacement retained base ownership")
 			cli, found := resolution.InputInfo(Keys("cli_equal"))
 			check(found && cli.Origin.Layer == LayerCLI && len(cli.Origin.Locations) == 1, "CLI replacement lost ownership")
 			if found && len(cli.Origin.Locations) == 1 {
@@ -298,7 +298,7 @@ composite: {first: first}
 		t.Fatal(err)
 	}
 	if result.Config.Main != "main" || result.Config.Imported != "imported" || !reflect.DeepEqual(result.Config.Sequence, []string{"first", "second"}) ||
-		result.Config.Equal != "same" || result.Config.Profile != "profile" || result.Config.CLIEqual != "same" {
+		result.Config.Equal != "same" || result.Config.Overlay != "overlay" || result.Config.CLIEqual != "same" {
 		t.Fatalf("configuration = %#v", result.Config)
 	}
--- a/internal/engine/records.go
+++ b/internal/engine/records.go
@@ -6,7 +6,7 @@ type Layer string
 const (
 	LayerDefault    Layer = "default"
 	LayerBase       Layer = "base"
-	LayerProfile    Layer = "profile"
+	LayerOverlay    Layer = "overlay"
 	LayerCLI        Layer = "cli"
 	LayerResolution Layer = "resolution"
 )
@@ -90,13 +90,13 @@ const (
 	CodeImportLimitExceeded Code = "import.limit_exceeded"
 	CodeImportVersion       Code = "import.version"
-	CodeProfileInvalid       Code = "profile.invalid"
+	CodeOverlayInvalid       Code = "overlay.invalid"
-	CodeProfileMissing       Code = "profile.missing"
+	CodeOverlayMissing       Code = "overlay.missing"
-	CodeProfileOutsideRoot   Code = "profile.outside_root"
+	CodeOverlayOutsideRoot   Code = "overlay.outside_root"
-	CodeProfileRepeated      Code = "profile.repeated"
+	CodeOverlayRepeated      Code = "overlay.repeated"
-	CodeProfileDirective     Code = "profile.directive"
+	CodeOverlayDirective     Code = "overlay.directive"
-	CodeProfileVersion       Code = "profile.version"
+	CodeOverlayVersion       Code = "overlay.version"
-	CodeProfileLimitExceeded Code = "profile.limit_exceeded"
+	CodeOverlayLimitExceeded Code = "overlay.limit_exceeded"
 	CodeComposeInvalid  Code = "compose.invalid"
 	CodeComposeConflict Code = "compose.conflict"
--- a/internal/engine/render_test.go
+++ b/internal/engine/render_test.go
@@ -71,7 +71,7 @@ empty_sequence: []
 labels: {hidden: DYNAMIC_CANARY_6a12, public: visible}
 sequence: [second, first]
 `)
-	writeImportFile(t, directory, "profiles/testing.yml", "dynamic: selected\n")
+	writeImportFile(t, directory, "overlays/testing.yml", "dynamic: selected\n")
 	definition := Definition[renderConfig]{
 		Secret: func(path Path) bool {
 			return path.String() == "/labels/hidden" || path.String() == "/dynamic/retired"
@@ -85,7 +85,7 @@ sequence: [second, first]
 			return nil
 		},
 	}
-	result, err := testLoad[renderConfig](File(mainPath), Options[renderConfig]{Definition: definition, Profile: "testing"})
+	result, err := testLoad[renderConfig](File(mainPath), Options[renderConfig]{Definition: definition, Overlay: "testing"})
 	if err != nil {
 		t.Fatal(err)
 	}
--- a/internal/engine/selected_overlay.go
+++ b/internal/engine/selected_overlay.go
@@ -12,12 +12,12 @@ import (
 	yamladapter "gitea.maximumdirect.net/eric/ConfigKit/internal/yaml"
 )
-func activeProfile(name string) bool {
+func activeOverlay(name string) bool {
 	return name != "" && name != "default"
 }
-func validProfileName(name string) bool {
+func validOverlayName(name string) bool {
-	if !activeProfile(name) {
+	if !activeOverlay(name) {
 		return true
 	}
 	for _, character := range name {
@@ -31,38 +31,38 @@ func validProfileName(name string) bool {
 	return true
 }
-func loadProfileDocument(source Source, context *FilesystemContext, main parsedSource, base *composedDocument, sources []SourceInfo, name string, rule *VersionRule, limits importLimits) (*composedDocument, []SourceInfo, []Diagnostic) {
+func loadSelectedOverlayDocument(source Source, context *FilesystemContext, main parsedSource, base *composedDocument, sources []SourceInfo, name string, rule *VersionRule, limits importLimits) (*composedDocument, []SourceInfo, []Diagnostic) {
 	rootPath, _, _, diagnostic := importFilesystem(source, context, main)
 	if diagnostic != nil {
 		return nil, cloneSourceInfos(sources), []Diagnostic{*diagnostic}
 	}
-	profilePath := filepath.Join(rootPath, "profiles", name+".yml")
+	overlayPath := filepath.Join(rootPath, "overlays", name+".yml")
-	canonical, err := canonicalExistingPath(profilePath)
+	canonical, err := canonicalExistingPath(overlayPath)
 	if err != nil {
-		code := CodeProfileInvalid
+		code := CodeOverlayInvalid
-		message := "selected profile could not be resolved"
+		message := "selected overlay could not be resolved"
 		if errors.Is(err, fs.ErrNotExist) {
-			code, message = CodeProfileMissing, "selected profile does not exist"
+			code, message = CodeOverlayMissing, "selected overlay does not exist"
 		} else if errors.Is(err, fs.ErrPermission) {
-			code, message = CodeImportPermission, "selected profile cannot be accessed"
+			code, message = CodeImportPermission, "selected overlay cannot be accessed"
 		}
 		return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(code, message, nil)}
 	}
 	if !containedPath(rootPath, canonical) {
-		return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(CodeProfileOutsideRoot, "selected profile resolves outside the configuration root", nil)}
+		return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(CodeOverlayOutsideRoot, "selected overlay resolves outside the configuration root", nil)}
 	}
 	for _, existing := range sources {
 		if existing.Path != "" && existing.Path == canonical {
-			return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(CodeProfileRepeated, "selected profile is already present in the base source graph", nil)}
+			return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(CodeOverlayRepeated, "selected overlay is already present in the base source graph", nil)}
 		}
 	}
 	if len(sources)+1 > limits.sources {
-		return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(CodeProfileLimitExceeded, "selected profile exceeds the source-count limit", nil)}
+		return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(CodeOverlayLimitExceeded, "selected overlay exceeds the source-count limit", nil)}
 	}
 	root, err := os.OpenRoot(rootPath)
 	if err != nil {
-		value := globFilesystemDiagnostic(err, "configuration root could not be opened for the selected profile", Location{})
+		value := globFilesystemDiagnostic(err, "configuration root could not be opened for the selected overlay", Location{})
 		value.Primary = nil
 		return nil, cloneSourceInfos(sources), []Diagnostic{value}
 	}
@@ -74,57 +74,57 @@ func loadProfileDocument(source Source, context *FilesystemContext, main parsedS
 	}()
 	relative, err := filepath.Rel(rootPath, canonical)
 	if err != nil || filepath.IsAbs(relative) || relative == ".." || strings.HasPrefix(relative, ".."+string(filepath.Separator)) {
-		return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(CodeProfileOutsideRoot, "selected profile could not be addressed inside the configuration root", nil)}
+		return nil, cloneSourceInfos(sources), []Diagnostic{importDiagnostic(CodeOverlayOutsideRoot, "selected overlay could not be addressed inside the configuration root", nil)}
 	}
 	sourceID := "source-" + strconv.Itoa(len(sources)+1)
-	profileLocation := &Location{SourceID: sourceID}
+	overlayLocation := &Location{SourceID: sourceID}
-	profileSource := SourceInfo{ID: sourceID, Label: filepath.ToSlash(filepath.Join("profiles", name+".yml")), Path: canonical, Layer: LayerProfile}
+	overlaySource := SourceInfo{ID: sourceID, Label: filepath.ToSlash(filepath.Join("overlays", name+".yml")), Path: canonical, Layer: LayerOverlay}
-	sources = append(cloneSourceInfos(sources), profileSource)
+	sources = append(cloneSourceInfos(sources), overlaySource)
-	data, diagnostic := readProfileFile(root, relative, sourceID, limits.bytes-base.inputBytes)
+	data, diagnostic := readOverlayFile(root, relative, sourceID, limits.bytes-base.inputBytes)
 	if diagnostic != nil {
 		return nil, sources, []Diagnostic{*diagnostic}
 	}
-	profileRoot, issues := yamladapter.Parse(bytes.NewReader(data), sourceID, yamladapter.Limits{Depth: maxDocumentDepth, Nodes: maxDocumentNodes})
+	overlayRoot, issues := yamladapter.Parse(bytes.NewReader(data), sourceID, yamladapter.Limits{Depth: maxDocumentDepth, Nodes: maxDocumentNodes})
 	if len(issues) != 0 {
 		return nil, sources, parserDiagnostics(sourceID, issues)
 	}
-	nodeCount := countInputNodes(profileRoot)
+	nodeCount := countInputNodes(overlayRoot)
 	if base.inputNodes+nodeCount > limits.nodes {
-		return nil, sources, []Diagnostic{importDiagnostic(CodeProfileLimitExceeded, "selected profile exceeds the aggregate node limit", profileLocation)}
+		return nil, sources, []Diagnostic{importDiagnostic(CodeOverlayLimitExceeded, "selected overlay exceeds the aggregate node limit", overlayLocation)}
 	}
-	if diagnostics := profileDirectiveDiagnostics(profileRoot, Path{}); len(diagnostics) != 0 {
+	if diagnostics := overlayDirectiveDiagnostics(overlayRoot, Path{}); len(diagnostics) != 0 {
 		return nil, sources, diagnostics
 	}
-	if versionNode := fragmentVersionClaim(profileRoot, rule); versionNode != nil {
+	if versionNode := fragmentVersionClaim(overlayRoot, rule); versionNode != nil {
 		location := publicLocation(versionNode.Location)
 		return nil, sources, []Diagnostic{{
-			Code: CodeProfileVersion, Severity: SeverityError, Path: rule.Path.clone(),
+			Code: CodeOverlayVersion, Severity: SeverityError, Path: rule.Path.clone(),
-			Message: "profiles cannot contribute to or replace the schema-version path", Primary: &location,
+			Message: "overlays cannot contribute to or replace the schema-version path", Primary: &location,
 		}}
 	}
 	closeErr := root.Close()
 	rootClosed = true
 	if closeErr != nil {
-		return nil, sources, []Diagnostic{importDiagnostic(CodeImportRead, "configuration root could not be closed after reading the selected profile", nil)}
+		return nil, sources, []Diagnostic{importDiagnostic(CodeImportRead, "configuration root could not be closed after reading the selected overlay", nil)}
 	}
-	profiled, diagnostics := overlayDocuments(base, profileRoot)
+	overlayd, diagnostics := overlayDocuments(base, overlayRoot)
-	if profiled != nil {
+	if overlayd != nil {
-		profiled.inputBytes = base.inputBytes + int64(len(data))
+		overlayd.inputBytes = base.inputBytes + int64(len(data))
-		profiled.inputNodes = base.inputNodes + nodeCount
+		overlayd.inputNodes = base.inputNodes + nodeCount
 	}
-	return profiled, sources, diagnostics
+	return overlayd, sources, diagnostics
 }
-func readProfileFile(root *os.Root, relative, sourceID string, remaining int64) ([]byte, *Diagnostic) {
+func readOverlayFile(root *os.Root, relative, sourceID string, remaining int64) ([]byte, *Diagnostic) {
 	limit := min(int64(maxSourceBytes), remaining)
 	if limit < 0 {
 		limit = 0
 	}
 	data, failure := readRegularFile(relative, root.Stat, root.Open, limit)
 	if failure != nil {
-		value := sourceReadDiagnostic(failure, sourceID, CodeProfileLimitExceeded, "selected profile exceeds a source or aggregate byte limit")
+		value := sourceReadDiagnostic(failure, sourceID, CodeOverlayLimitExceeded, "selected overlay exceeds a source or aggregate byte limit")
 		return nil, &value
 	}
 	return data, nil
--- a/internal/engine/selected_overlay_test.go
+++ b/internal/engine/selected_overlay_test.go
@@ -9,7 +9,7 @@ import (
 	"testing"
 )
-type profileTestConfig struct {
+type overlayTestConfig struct {
 	Settings struct {
 		Kept    string `yaml:"kept"`
 		Changed string `yaml:"changed"`
@@ -21,7 +21,7 @@ type profileTestConfig struct {
 	Schema   map[string]string `yaml:"schema"`
 }
-func TestLoadAppliesSelectedProfileAfterBaseAndBeforeDefaults(t *testing.T) {
+func TestLoadAppliesSelectedOverlayAfterBaseAndBeforeDefaults(t *testing.T) {
 	directory := t.TempDir()
 	mainPath := writeImportFile(t, directory, "main.yml", `configkit:
  imports: [{path: base.yml}]
@@ -33,19 +33,19 @@ nullable: base
 value: {child: base}
 `)
 	basePath := writeImportFile(t, directory, "base.yml", "settings: {added: imported}\n")
-	profilePath := writeImportFile(t, directory, "profiles/testing.yml", `settings:
+	overlayPath := writeImportFile(t, directory, "overlays/testing.yml", `settings:
-  changed: profile
+  changed: overlay
-values: [profile]
+values: [overlay]
 nullable: null
 value: scalar
 `)
-	result, err := testLoad[profileTestConfig](File(mainPath), Options[profileTestConfig]{
+	result, err := testLoad[overlayTestConfig](File(mainPath), Options[overlayTestConfig]{
 		Imports: true,
-		Profile: "testing",
+		Overlay: "testing",
-		Definition: Definition[profileTestConfig]{Defaults: func() profileTestConfig {
+		Definition: Definition[overlayTestConfig]{Defaults: func() overlayTestConfig {
 			defaultValue := "default"
-			return profileTestConfig{
+			return overlayTestConfig{
 				Values: []string{"default"}, Nullable: &defaultValue,
 				Settings: struct {
 					Kept    string `yaml:"kept"`
@@ -58,31 +58,31 @@ value: scalar
 	if err != nil {
 		t.Fatal(err)
 	}
-	if result.Config.Settings.Kept != "main" || result.Config.Settings.Changed != "profile" || result.Config.Settings.Added != "imported" {
+	if result.Config.Settings.Kept != "main" || result.Config.Settings.Changed != "overlay" || result.Config.Settings.Added != "imported" {
 		t.Fatalf("settings = %#v", result.Config.Settings)
 	}
-	if !reflect.DeepEqual(result.Config.Values, []string{"profile"}) || result.Config.Nullable != nil || result.Config.Value != "scalar" {
+	if !reflect.DeepEqual(result.Config.Values, []string{"overlay"}) || result.Config.Nullable != nil || result.Config.Value != "scalar" {
-		t.Fatalf("profile values = values %#v nullable %#v value %#v", result.Config.Values, result.Config.Nullable, result.Config.Value)
+		t.Fatalf("overlay values = values %#v nullable %#v value %#v", result.Config.Values, result.Config.Nullable, result.Config.Value)
 	}
 	sources := result.Sources()
-	wantPaths := []string{canonicalTestPath(t, mainPath), canonicalTestPath(t, basePath), canonicalTestPath(t, profilePath)}
+	wantPaths := []string{canonicalTestPath(t, mainPath), canonicalTestPath(t, basePath), canonicalTestPath(t, overlayPath)}
 	gotPaths := make([]string, len(sources))
 	for index, source := range sources {
 		gotPaths[index] = source.Path
 	}
-	if !reflect.DeepEqual(gotPaths, wantPaths) || sources[2].Layer != LayerProfile {
+	if !reflect.DeepEqual(gotPaths, wantPaths) || sources[2].Layer != LayerOverlay {
 		t.Fatalf("sources = %#v", sources)
 	}
 	changed, _ := result.Metadata().Lookup(Keys("settings", "changed"))
 	kept, _ := result.Metadata().Lookup(Keys("settings", "kept"))
-	if changed.Origin.Layer != LayerProfile || changed.Origin.Locations[0].SourceID != "source-3" || kept.Origin.Layer != LayerBase {
+	if changed.Origin.Layer != LayerOverlay || changed.Origin.Locations[0].SourceID != "source-3" || kept.Origin.Layer != LayerBase {
 		t.Fatalf("origins = changed %#v kept %#v", changed, kept)
 	}
 	if _, ok := result.Metadata().Lookup(Keys("value", "child")); ok {
 		t.Fatal("removed child remains effective")
 	}
 	childHistory := result.Metadata().History(Keys("value", "child"))
-	if len(childHistory) < 2 || childHistory[len(childHistory)-1].Path.String() != "/value" || childHistory[len(childHistory)-1].Origin.Layer != LayerProfile {
+	if len(childHistory) < 2 || childHistory[len(childHistory)-1].Path.String() != "/value" || childHistory[len(childHistory)-1].Origin.Layer != LayerOverlay {
 		t.Fatalf("removed child history = %#v", childHistory)
 	}
 	if _, ok := result.Metadata().Lookup(Keys("values").Index(1)); ok {
@@ -94,34 +94,43 @@ value: scalar
 	}
 }
-func TestLoadProfileSelectionUsesOneFixedYAMLFile(t *testing.T) {
+func TestLoadOverlaySelectionUsesOneFixedYAMLFile(t *testing.T) {
 	directory := t.TempDir()
 	mainPath := writeImportFile(t, directory, "main.yml", "settings: {kept: base}\n")
-	writeImportFile(t, directory, "profiles/testing.yml", "settings: {changed: selected}\n")
+	writeImportFile(t, directory, "overlays/testing.yml", "settings: {changed: selected}\n")
-	writeImportFile(t, directory, "profiles/default.yml", "settings: {changed: forbidden}\n")
+	writeImportFile(t, directory, "profiles/testing.yml", "settings: {changed: legacy}\n")
 	writeImportFile(t, directory, "overlays/default.yml", "settings: {changed: forbidden}\n")
 	for _, name := range []string{"", "default"} {
-		result, err := testLoad[profileTestConfig](File(mainPath), Options[profileTestConfig]{Profile: name})
+		result, err := testLoad[overlayTestConfig](File(mainPath), Options[overlayTestConfig]{Overlay: name})
 		if err != nil || result.Config.Settings.Changed != "" || len(result.Sources()) != 1 {
-			t.Fatalf("inactive profile %q = %#v, %v", name, result, err)
+			t.Fatalf("inactive overlay %q = %#v, %v", name, result, err)
 		}
 	}
-	selected, err := testLoad[profileTestConfig](File(mainPath), Options[profileTestConfig]{Profile: "testing"})
+	selected, err := testLoad[overlayTestConfig](File(mainPath), Options[overlayTestConfig]{Overlay: "testing"})
-	if err != nil || selected.Config.Settings.Changed != "selected" || len(selected.Sources()) != 2 {
+	if err != nil || selected.Config.Settings.Changed != "selected" || len(selected.Sources()) != 2 ||
-		t.Fatalf("selected profile = %#v, %v", selected, err)
+		selected.Sources()[1].Label != "overlays/testing.yml" || selected.Sources()[1].Layer != LayerOverlay {
 		t.Fatalf("selected overlay = %#v, %v", selected, err)
 	}
 	t.Run("legacy directory is not selected", func(t *testing.T) {
 		legacyDirectory := t.TempDir()
 		legacyMain := writeImportFile(t, legacyDirectory, "main.yml", "settings: {kept: base}\n")
 		writeImportFile(t, legacyDirectory, "profiles/testing.yml", "settings: {changed: legacy}\n")
 		requireOverlayLoadCode(t, File(legacyMain), Options[overlayTestConfig]{Overlay: "testing"}, CodeOverlayMissing)
 	})
 	for _, name := range []string{"../testing", "testing.yml", "one,two", "with space", "é", "bad\x00name"} {
 		t.Run(name, func(t *testing.T) {
-			requireProfileLoadCode(t, File(mainPath), Options[profileTestConfig]{Profile: name}, CodeOptionsInvalid)
+			requireOverlayLoadCode(t, File(mainPath), Options[overlayTestConfig]{Overlay: name}, CodeOptionsInvalid)
 		})
 	}
-	requireProfileLoadCode(t, File(mainPath), Options[profileTestConfig]{Profile: "missing"}, CodeProfileMissing)
+	requireOverlayLoadCode(t, File(mainPath), Options[overlayTestConfig]{Overlay: "missing"}, CodeOverlayMissing)
-	writeImportFile(t, directory, "profiles/fallback.yaml", "settings: {changed: fallback}\n")
+	writeImportFile(t, directory, "overlays/fallback.yaml", "settings: {changed: fallback}\n")
-	requireProfileLoadCode(t, File(mainPath), Options[profileTestConfig]{Profile: "fallback"}, CodeProfileMissing)
+	requireOverlayLoadCode(t, File(mainPath), Options[overlayTestConfig]{Overlay: "fallback"}, CodeOverlayMissing)
 }
-func TestLoadProfileRejectsDirectivesVersionsAndBaseAliases(t *testing.T) {
+func TestLoadOverlayRejectsDirectivesVersionsAndBaseAliases(t *testing.T) {
 	versionRule := &VersionRule{Path: Keys("schema", "version"), Check: func(version Version, _ *Validation) error {
 		if !version.Present || version.Text != "4" {
 			return errors.New("unexpected version")
@@ -130,55 +139,55 @@ func TestLoadProfileRejectsDirectivesVersionsAndBaseAliases(t *testing.T) {
 	}}
 	for _, test := range []struct {
 		name    string
-		profile string
+		overlay string
 		code    Code
 	}{
-		{name: "root directive", profile: "configkit: {}\n", code: CodeProfileDirective},
+		{name: "root directive", overlay: "configkit: {}\n", code: CodeOverlayDirective},
-		{name: "nested directive", profile: "settings: {configkit: {}}\n", code: CodeProfileDirective},
+		{name: "nested directive", overlay: "settings: {configkit: {}}\n", code: CodeOverlayDirective},
-		{name: "equal integer version", profile: "schema: {version: 4}\n", code: CodeProfileVersion},
+		{name: "equal integer version", overlay: "schema: {version: 4}\n", code: CodeOverlayVersion},
-		{name: "ancestor scalar", profile: "schema: null\n", code: CodeProfileVersion},
+		{name: "ancestor scalar", overlay: "schema: null\n", code: CodeOverlayVersion},
 	} {
 		t.Run(test.name, func(t *testing.T) {
 			directory := t.TempDir()
 			mainPath := writeImportFile(t, directory, "main.yml", "schema: {version: 4}\n")
-			writeImportFile(t, directory, "profiles/testing.yml", test.profile)
+			writeImportFile(t, directory, "overlays/testing.yml", test.overlay)
-			requireProfileLoadCode(t, File(mainPath), Options[profileTestConfig]{Profile: "testing", Definition: Definition[profileTestConfig]{Version: versionRule}}, test.code)
+			requireOverlayLoadCode(t, File(mainPath), Options[overlayTestConfig]{Overlay: "testing", Definition: Definition[overlayTestConfig]{Version: versionRule}}, test.code)
 		})
 	}
 	t.Run("mapping sibling is allowed", func(t *testing.T) {
 		directory := t.TempDir()
 		mainPath := writeImportFile(t, directory, "main.yml", "schema: {version: 4}\n")
-		writeImportFile(t, directory, "profiles/testing.yml", "schema: {other: allowed}\n")
+		writeImportFile(t, directory, "overlays/testing.yml", "schema: {other: allowed}\n")
-		result, err := testLoad[profileTestConfig](File(mainPath), Options[profileTestConfig]{Profile: "testing", Definition: Definition[profileTestConfig]{Version: versionRule}})
+		result, err := testLoad[overlayTestConfig](File(mainPath), Options[overlayTestConfig]{Overlay: "testing", Definition: Definition[overlayTestConfig]{Version: versionRule}})
 		if err != nil || result.Config.Schema["other"] != "allowed" {
 			t.Fatalf("mapping sibling = %#v, %v", result, err)
 		}
 	})
-	t.Run("profile aliases imported base", func(t *testing.T) {
+	t.Run("overlay aliases imported base", func(t *testing.T) {
 		directory := t.TempDir()
-		mainPath := writeImportFile(t, directory, "main.yml", "configkit: {imports: [{path: profiles/testing.yml}]}\n")
+		mainPath := writeImportFile(t, directory, "main.yml", "configkit: {imports: [{path: overlays/testing.yml}]}\n")
-		writeImportFile(t, directory, "profiles/testing.yml", "settings: {changed: value}\n")
+		writeImportFile(t, directory, "overlays/testing.yml", "settings: {changed: value}\n")
-		requireProfileLoadCode(t, File(mainPath), Options[profileTestConfig]{Imports: true, Profile: "testing"}, CodeProfileRepeated)
+		requireOverlayLoadCode(t, File(mainPath), Options[overlayTestConfig]{Imports: true, Overlay: "testing"}, CodeOverlayRepeated)
 	})
 }
-func TestLoadProfileKeepsBaseFailuresAndFilesystemContainment(t *testing.T) {
+func TestLoadOverlayKeepsBaseFailuresAndFilesystemContainment(t *testing.T) {
-	t.Run("base parse precedes profile", func(t *testing.T) {
+	t.Run("base parse precedes overlay", func(t *testing.T) {
 		directory := t.TempDir()
 		mainPath := writeImportFile(t, directory, "main.yml", "settings: [\n")
-		writeImportFile(t, directory, "profiles/testing.yml", "settings: {changed: profile}\n")
+		writeImportFile(t, directory, "overlays/testing.yml", "settings: {changed: overlay}\n")
-		requireProfileLoadCode(t, File(mainPath), Options[profileTestConfig]{Profile: "testing"}, CodeYAMLInvalid)
+		requireOverlayLoadCode(t, File(mainPath), Options[overlayTestConfig]{Overlay: "testing"}, CodeYAMLInvalid)
 	})
-	t.Run("profile parse", func(t *testing.T) {
+	t.Run("overlay parse", func(t *testing.T) {
 		directory := t.TempDir()
 		mainPath := writeImportFile(t, directory, "main.yml", "{}\n")
-		writeImportFile(t, directory, "profiles/testing.yml", "settings: [\n")
+		writeImportFile(t, directory, "overlays/testing.yml", "settings: [\n")
-		loadError := requireProfileLoadCode(t, File(mainPath), Options[profileTestConfig]{Profile: "testing"}, CodeYAMLInvalid)
+		loadError := requireOverlayLoadCode(t, File(mainPath), Options[overlayTestConfig]{Overlay: "testing"}, CodeYAMLInvalid)
 		if loadError.Diagnostics()[0].Primary.SourceID != "source-2" || len(loadError.Sources()) != 2 {
-			t.Fatalf("profile parse attribution = %#v / %#v", loadError.Diagnostics(), loadError.Sources())
+			t.Fatalf("overlay parse attribution = %#v / %#v", loadError.Diagnostics(), loadError.Sources())
 		}
 	})
@@ -186,32 +195,32 @@ func TestLoadProfileKeepsBaseFailuresAndFilesystemContainment(t *testing.T) {
 		t.Run("symlink escape", func(t *testing.T) {
 			root := t.TempDir()
 			outside := t.TempDir()
-			outsideProfile := writeImportFile(t, outside, "testing.yml", "settings: {changed: outside}\n")
+			outsideOverlay := writeImportFile(t, outside, "testing.yml", "settings: {changed: outside}\n")
-			if err := os.Mkdir(filepath.Join(root, "profiles"), 0o755); err != nil {
+			if err := os.Mkdir(filepath.Join(root, "overlays"), 0o755); err != nil {
 				t.Fatal(err)
 			}
-			if err := os.Symlink(outsideProfile, filepath.Join(root, "profiles/testing.yml")); err != nil {
+			if err := os.Symlink(outsideOverlay, filepath.Join(root, "overlays/testing.yml")); err != nil {
 				t.Skipf("symlinks unavailable: %v", err)
 			}
 			mainPath := writeImportFile(t, root, "main.yml", "{}\n")
-			requireProfileLoadCode(t, File(mainPath), Options[profileTestConfig]{Profile: "testing"}, CodeProfileOutsideRoot)
+			requireOverlayLoadCode(t, File(mainPath), Options[overlayTestConfig]{Overlay: "testing"}, CodeOverlayOutsideRoot)
 		})
 	}
 	t.Run("byte source context", func(t *testing.T) {
 		directory := t.TempDir()
-		writeImportFile(t, directory, "profiles/testing.yml", "settings: {changed: selected}\n")
+		writeImportFile(t, directory, "overlays/testing.yml", "settings: {changed: selected}\n")
-		result, err := testLoad[profileTestConfig](Bytes("s3://bucket/main.yml", []byte("{}\n")), Options[profileTestConfig]{
+		result, err := testLoad[overlayTestConfig](Bytes("s3://bucket/main.yml", []byte("{}\n")), Options[overlayTestConfig]{
-			Profile: "testing", Filesystem: &FilesystemContext{BaseDir: directory, Root: directory},
+			Overlay: "testing", Filesystem: &FilesystemContext{BaseDir: directory, Root: directory},
 		})
 		if err != nil || result.Config.Settings.Changed != "selected" {
-			t.Fatalf("byte profile = %#v, %v", result, err)
+			t.Fatalf("byte overlay = %#v, %v", result, err)
 		}
-		requireProfileLoadCode(t, Bytes("memory.yml", []byte("{}\n")), Options[profileTestConfig]{Profile: "testing"}, CodeOptionsInvalid)
+		requireOverlayLoadCode(t, Bytes("memory.yml", []byte("{}\n")), Options[overlayTestConfig]{Overlay: "testing"}, CodeOptionsInvalid)
 	})
 }
-func TestLoadProfileCountsAgainstAggregateBudgets(t *testing.T) {
+func TestLoadOverlayCountsAgainstAggregateBudgets(t *testing.T) {
 	for _, test := range []struct {
 		name   string
 		limits func(parsedSource, int) importLimits
@@ -219,8 +228,8 @@ func TestLoadProfileCountsAgainstAggregateBudgets(t *testing.T) {
 		{name: "source count", limits: func(_ parsedSource, _ int) importLimits {
 			return importLimits{sources: 1, bytes: maxTotalBytes, nodes: maxDocumentNodes}
 		}},
-		{name: "aggregate bytes", limits: func(main parsedSource, profileBytes int) importLimits {
+		{name: "aggregate bytes", limits: func(main parsedSource, overlayBytes int) importLimits {
-			return importLimits{sources: 2, bytes: main.bytes + int64(profileBytes) - 1, nodes: maxDocumentNodes}
+			return importLimits{sources: 2, bytes: main.bytes + int64(overlayBytes) - 1, nodes: maxDocumentNodes}
 		}},
 		{name: "aggregate nodes", limits: func(main parsedSource, _ int) importLimits {
 			return importLimits{sources: 2, bytes: maxTotalBytes, nodes: countInputNodes(main.document) + 1}
@@ -229,8 +238,8 @@ func TestLoadProfileCountsAgainstAggregateBudgets(t *testing.T) {
 		t.Run(test.name, func(t *testing.T) {
 			directory := t.TempDir()
 			mainPath := writeImportFile(t, directory, "main.yml", "{}\n")
-			profileData := "settings: {changed: selected}\n"
+			overlayData := "settings: {changed: selected}\n"
-			writeImportFile(t, directory, "profiles/testing.yml", profileData)
+			writeImportFile(t, directory, "overlays/testing.yml", overlayData)
 			main, diagnostics := parseSource(File(mainPath), "source-1", defaultParseLimits())
 			if len(diagnostics) != 0 {
 				t.Fatal(diagnostics)
@@ -241,17 +250,17 @@ func TestLoadProfileCountsAgainstAggregateBudgets(t *testing.T) {
 			}
 			base.inputBytes = main.bytes
 			base.inputNodes = countInputNodes(main.document)
-			_, _, diagnostics = loadProfileDocument(File(mainPath), nil, main, base, sourceInfos(main.source), "testing", nil, test.limits(main, len(profileData)))
+			_, _, diagnostics = loadSelectedOverlayDocument(File(mainPath), nil, main, base, sourceInfos(main.source), "testing", nil, test.limits(main, len(overlayData)))
-			if len(diagnostics) == 0 || diagnostics[0].Code != CodeProfileLimitExceeded {
+			if len(diagnostics) == 0 || diagnostics[0].Code != CodeOverlayLimitExceeded {
 				t.Fatalf("diagnostics = %#v", diagnostics)
 			}
 		})
 	}
 }
-func requireProfileLoadCode(t *testing.T, source Source, options Options[profileTestConfig], code Code) *LoadError {
+func requireOverlayLoadCode(t *testing.T, source Source, options Options[overlayTestConfig], code Code) *LoadError {
 	t.Helper()
-	result, err := testLoad[profileTestConfig](source, options)
+	result, err := testLoad[overlayTestConfig](source, options)
 	if result != nil || err == nil {
 		t.Fatalf("result, error = %#v, %v", result, err)
 	}
--- a/internal/engine/source_fifo_test.go
+++ b/internal/engine/source_fifo_test.go
@@ -23,8 +23,8 @@ func TestNonregularSourcesDoNotBlock(t *testing.T) {
 			source = File(filepath.Join(root, "pipe.yml"))
 		case "import":
 			opts.Imports = true
-		case "profile":
+		case "overlay":
-			opts.Profile = "fifo"
+			opts.Overlay = "fifo"
 		}
 		_, err := testLoad(source, opts)
 		var loadErr *LoadError
@@ -38,7 +38,7 @@ func TestNonregularSourcesDoNotBlock(t *testing.T) {
 		}
 		t.Fatalf("expected nonregular classification, got %v", loadErr.Diagnostics())
 	}
-	for _, mode := range []string{"file", "import", "profile"} {
+	for _, mode := range []string{"file", "import", "overlay"} {
 		t.Run(mode, func(t *testing.T) {
 			root := t.TempDir()
 			input := "value: 1\n"
@@ -48,12 +48,12 @@ func TestNonregularSourcesDoNotBlock(t *testing.T) {
 			if err := os.WriteFile(filepath.Join(root, "config.yml"), []byte(input), 0600); err != nil {
 				t.Fatal(err)
 			}
-			if err := os.Mkdir(filepath.Join(root, "profiles"), 0700); err != nil {
+			if err := os.Mkdir(filepath.Join(root, "overlays"), 0700); err != nil {
 				t.Fatal(err)
 			}
 			fifo := filepath.Join(root, "pipe.yml")
-			if mode == "profile" {
+			if mode == "overlay" {
-				fifo = filepath.Join(root, "profiles", "fifo.yml")
+				fifo = filepath.Join(root, "overlays", "fifo.yml")
 			}
 			if err := syscall.Mkfifo(fifo, 0600); err != nil {
 				t.Fatal(err)
--- a/lifecycle.go
+++ b/lifecycle.go
@@ -18,17 +18,17 @@ type Definition[T any] struct {
 }
 // Options contains the application definition and per-load input selections.
-// Imports enables explicit path and glob imports; Profile selects one fixed profile
+// Imports enables explicit path and glob imports; Overlay selects one fixed overlay;
-// overlay; Overrides contains only values explicitly supplied by an application CLI.
+// Overrides contains only values explicitly supplied by an application CLI.
 type Options[T any] struct {
 	Definition Definition[T]
 	Imports    bool
-	Profile    string
+	Overlay    string
 	Filesystem *FilesystemContext
 	Overrides  []Override
 }
-// FilesystemContext supplies filesystem roots for imports and profiles.
+// FilesystemContext supplies filesystem roots for imports and overlays.
 type FilesystemContext struct {
 	BaseDir string
 	Root    string
@@ -75,7 +75,7 @@ type Result[T any] struct {
 }
 // Load parses and strictly decodes zero or one selected source, explicitly enabled
-// imports, and one selected profile. It accepts at most one Options value and
+// imports, and one selected overlay. It accepts at most one Options value and
 // returns no result when any error is reported.
 func Load[T any](source Source, supplied ...Options[T]) (*Result[T], error) {
 	options := make([]engine.Options[T], len(supplied))
@@ -219,7 +219,7 @@ func toEngineOptions[T any](options Options[T]) engine.Options[T] {
 	result := engine.Options[T]{
 		Definition: toEngineDefinition(options.Definition),
 		Imports:    options.Imports,
-		Profile:    options.Profile,
+		Overlay:    options.Overlay,
 	}
 	if options.Filesystem != nil {
 		result.Filesystem = &engine.FilesystemContext{BaseDir: options.Filesystem.BaseDir, Root: options.Filesystem.Root}
--- a/records.go
+++ b/records.go
@@ -6,7 +6,7 @@ type Layer string
 const (
 	LayerDefault    Layer = "default"
 	LayerBase       Layer = "base"
-	LayerProfile    Layer = "profile"
+	LayerOverlay    Layer = "overlay"
 	LayerCLI        Layer = "cli"
 	LayerResolution Layer = "resolution"
 )
@@ -90,13 +90,13 @@ const (
 	CodeImportLimitExceeded Code = "import.limit_exceeded"
 	CodeImportVersion       Code = "import.version"
-	CodeProfileInvalid       Code = "profile.invalid"
+	CodeOverlayInvalid       Code = "overlay.invalid"
-	CodeProfileMissing       Code = "profile.missing"
+	CodeOverlayMissing       Code = "overlay.missing"
-	CodeProfileOutsideRoot   Code = "profile.outside_root"
+	CodeOverlayOutsideRoot   Code = "overlay.outside_root"
-	CodeProfileRepeated      Code = "profile.repeated"
+	CodeOverlayRepeated      Code = "overlay.repeated"
-	CodeProfileDirective     Code = "profile.directive"
+	CodeOverlayDirective     Code = "overlay.directive"
-	CodeProfileVersion       Code = "profile.version"
+	CodeOverlayVersion       Code = "overlay.version"
-	CodeProfileLimitExceeded Code = "profile.limit_exceeded"
+	CodeOverlayLimitExceeded Code = "overlay.limit_exceeded"
 	CodeComposeInvalid  Code = "compose.invalid"
 	CodeComposeConflict Code = "compose.conflict"
--- a/records_test.go
+++ b/records_test.go
@@ -0,0 +1,22 @@
 package configkit
 import "testing"
 func TestOverlayPublicValues(t *testing.T) {
 	if LayerOverlay != "overlay" {
 		t.Fatalf("LayerOverlay = %q", LayerOverlay)
 	}
 	for code, value := range map[Code]string{
 		CodeOverlayInvalid:       "overlay.invalid",
 		CodeOverlayMissing:       "overlay.missing",
 		CodeOverlayOutsideRoot:   "overlay.outside_root",
 		CodeOverlayRepeated:      "overlay.repeated",
 		CodeOverlayDirective:     "overlay.directive",
 		CodeOverlayVersion:       "overlay.version",
 		CodeOverlayLimitExceeded: "overlay.limit_exceeded",
 	} {
 		if string(code) != value {
 			t.Errorf("code = %q, want %q", code, value)
 		}
 	}
 }
--- a/release_check_test.go
+++ b/release_check_test.go
@@ -9,6 +9,120 @@ import (
 	"testing"
 )
 // Exercise the copyable runbook against disposable Git repositories, not a
 // publication service. The checker itself is covered separately.
 func TestReleaseRunbookGuards(t *testing.T) {
 	document, err := os.ReadFile("docs/release.md")
 	if err != nil {
 		t.Fatal(err)
 	}
 	block := func(heading string) string {
 		t.Helper()
 		_, section, ok := strings.Cut(string(document), heading)
 		if !ok {
 			t.Fatalf("missing section %q", heading)
 		}
 		_, section, ok = strings.Cut(section, "```sh\n")
 		if !ok {
 			t.Fatalf("missing commands in %q", heading)
 		}
 		commands, _, ok := strings.Cut(section, "```")
 		if !ok {
 			t.Fatalf("unterminated commands in %q", heading)
 		}
 		return commands
 	}
 	prepare := block("## 4. Validate the source candidate")
 	publish := block("## 6. Run publication guards") + block("## 7. Tag and publish the exact ref")
 	for _, scenario := range []string{"success", "dirty", "changed-candidate", "remote-tag-exists", "failed-validation"} {
 		t.Run(scenario, func(t *testing.T) {
 			root := t.TempDir()
 			remote := filepath.Join(t.TempDir(), "remote.git")
 			run := func(program string, args ...string) string {
 				t.Helper()
 				cmd := exec.Command(program, args...)
 				cmd.Dir = root
 				out, err := cmd.CombinedOutput()
 				if err != nil {
 					t.Fatalf("%s %v: %v\n%s", program, args, err, out)
 				}
 				return strings.TrimSpace(string(out))
 			}
 			run("git", "init", "-q", "-b", "main")
 			run("git", "init", "-q", "--bare", remote)
 			run("git", "config", "user.name", "Test")
 			run("git", "config", "user.email", "test@example.invalid")
 			run("git", "config", "commit.gpgsign", "false")
 			run("git", "config", "tag.gpgsign", "false")
 			const origin = "https://gitea.maximumdirect.net/eric/ConfigKit.git"
 			run("git", "remote", "add", "origin", remote)
 			// Substitute only the fixture's authoritative URL; execute the guards
 			// themselves unchanged. Disallow network transports as a backstop.
 			localPublish := strings.ReplaceAll(publish, origin, remote)
 			for _, dir := range []string{"docs/releases", "scripts"} {
 				if err := os.MkdirAll(filepath.Join(root, dir), 0700); err != nil {
 					t.Fatal(err)
 				}
 			}
 			write := func(path, content string) {
 				t.Helper()
 				if err := os.WriteFile(filepath.Join(root, path), []byte(content), 0700); err != nil {
 					t.Fatal(err)
 				}
 			}
 			checker := "#!/bin/sh\nexit 0\n"
 			if scenario == "failed-validation" {
 				checker = "#!/bin/sh\nexit 37\n"
 			}
 			write("scripts/release-check.sh", checker)
 			write("docs/releases/v0.9.0.md", "# ConfigKit v0.9.0\n\n## Summary\n\n## Compatibility\n\n## Upgrade\n\n## Changes\n")
 			run("git", "add", ".")
 			bash := func(commands string) ([]byte, error) {
 				cmd := exec.Command("bash", "-c", "set -euo pipefail\nrelease_version=v0.9.0\n"+commands)
 				cmd.Dir = root
 				cmd.Env = append(os.Environ(), "GIT_ALLOW_PROTOCOL=file")
 				return cmd.CombinedOutput()
 			}
 			out, err := bash(prepare)
 			if scenario == "failed-validation" {
 				if err == nil {
 					t.Fatal("failed validation accepted")
 				}
 				if _, err := os.Stat(filepath.Join(root, ".git/configkit-release-candidate")); !os.IsNotExist(err) {
 					t.Fatal("failed validation recorded a candidate")
 				}
 			} else if err != nil {
 				t.Fatalf("prepare: %v\n%s", err, out)
 			}
 			switch scenario {
 			case "dirty":
 				write("unexpected.txt", "uncommitted\n")
 			case "changed-candidate":
 				run("git", "commit", "--allow-empty", "-qm", "Changed candidate")
 			case "remote-tag-exists":
 				run("git", "tag", "v0.9.0")
 				run("git", "push", remote, "refs/tags/v0.9.0")
 				run("git", "tag", "-d", "v0.9.0")
 			}
 			// Seed the remote primary branch so fetch works before first publication.
 			run("git", "push", remote, "HEAD:refs/heads/main")
 			out, err = bash(localPublish)
 			if scenario == "success" {
 				if err != nil {
 					t.Fatalf("publish: %v\n%s", err, out)
 				}
 				if got := run("git", "--git-dir="+remote, "rev-parse", "v0.9.0^{}"); got != run("git", "rev-parse", "HEAD") {
 					t.Fatal("published wrong commit")
 				}
 			} else if err == nil {
 				t.Fatalf("publication accepted %s", scenario)
 			} else if scenario != "remote-tag-exists" && run("git", "--git-dir="+remote, "tag", "--list") != "" {
 				t.Fatal("failed guard published a tag")
 			}
 		})
 	}
 }
 func TestCheckScriptsHandleFilenamesAndStopOnFailure(t *testing.T) {
 	for _, scriptName := range []string{"release-check.sh", "check.sh"} {
 		t.Run(scriptName, func(t *testing.T) {
@@ -66,7 +180,7 @@ func TestCheckScriptsHandleFilenamesAndStopOnFailure(t *testing.T) {
 						t.Fatal(err)
 					}
 					cmd := exec.Command("/bin/bash", filepath.Join(root, "scripts", scriptName))
-					cmd.Env = append(os.Environ(), "PATH="+bin+string(os.PathListSeparator)+os.Getenv("PATH"), "CONFIGKIT_BASELINE_TOOLCHAIN=test-baseline", "CONFIGKIT_NEWER_TOOLCHAIN=test-newer", "CONFIGKIT_TEST_FMT_LOG="+log, "CONFIGKIT_TEST_GO_LOG="+calls)
+					cmd.Env = append(os.Environ(), "PATH="+bin+string(os.PathListSeparator)+os.Getenv("PATH"), "CONFIGKIT_BASELINE_TOOLCHAIN=test-baseline", "CONFIGKIT_NEWER_TOOLCHAIN=", "CONFIGKIT_TEST_FMT_LOG="+log, "CONFIGKIT_TEST_GO_LOG="+calls)
 					// Log only targets selected by the script, not inherited host settings.
 					cmd.Env = append(cmd.Env, "GOOS=", "GOARCH=")
 					if name == "failed-go-check" {
@@ -104,6 +218,12 @@ func TestCheckScriptsHandleFilenamesAndStopOnFailure(t *testing.T) {
 						t.Fatal("checker continued after failed test")
 					}
 					if scriptName == "release-check.sh" && !fail {
 						if strings.Count(string(invoked), " test ") != 1 || !strings.Contains(string(invoked), " test -race -v ./...\n") {
 							t.Fatalf("want one complete race-test run, got:\n%s", invoked)
 						}
 						if strings.Count(string(invoked), " vet ./...") != 1 || strings.Count(string(invoked), " build ./...") != 2 {
 							t.Fatalf("want one vet run and only two cross-builds, got:\n%s", invoked)
 						}
 						// These are selected release gates, not incidental loop details.
 						for _, target := range []string{"linux/amd64", "linux/arm64"} {
 							if !strings.Contains(string(invoked), target+" build ./...") {
--- a/scripts/release-check.sh
+++ b/scripts/release-check.sh
@@ -5,7 +5,6 @@ repository_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
 cd "$repository_dir"
 baseline_toolchain=${CONFIGKIT_BASELINE_TOOLCHAIN:?set CONFIGKIT_BASELINE_TOOLCHAIN to a cached supported Go 1.25 patch release}
 newer_toolchain=${CONFIGKIT_NEWER_TOOLCHAIN:?set CONFIGKIT_NEWER_TOOLCHAIN to a cached newer supported Go toolchain}
 run_go() {
  local toolchain=$1
@@ -20,7 +19,6 @@ check_toolchain() {
 }
 check_toolchain "$baseline_toolchain"
 check_toolchain "$newer_toolchain"
 bash -n scripts/release-check.sh
 temporary_dir=$(mktemp -d)
@@ -69,21 +67,13 @@ while IFS= read -r -d '' candidate_file; do
  esac
 done < <(git ls-files --cached --others --exclude-standard -z)
-for toolchain in "$baseline_toolchain" "$newer_toolchain"; do
+# Verbose output reports skipped cases without a separate evidence run.
-  run_go "$toolchain" test ./...
+run_go "$baseline_toolchain" test -race -v ./...
-  run_go "$toolchain" vet ./...
+run_go "$baseline_toolchain" vet ./...
  run_go "$toolchain" build ./...
 done
 run_go "$newer_toolchain" test -race ./...
 run_go "$newer_toolchain" test . -run '^Example'
 run_go "$newer_toolchain" test ./examples/consumers
 run_go "$newer_toolchain" test . -run '^TestLocalDocumentationLinks$'
 run_go "$newer_toolchain" test . -run '^TestDependencyImportBoundary$'
 # Only release-validated targets gate publication; macOS is best-effort.
 for target in linux/amd64 linux/arm64; do
  target_os=${target%/*}
  target_arch=${target#*/}
-  GOTOOLCHAIN="$newer_toolchain" GOPROXY=off CGO_ENABLED=0 GOOS="$target_os" GOARCH="$target_arch" go build ./...
+  GOTOOLCHAIN="$baseline_toolchain" GOPROXY=off CGO_ENABLED=0 GOOS="$target_os" GOARCH="$target_arch" go build ./...
 done
Author	SHA1	Message	Date
Eric Rakestraw	c034b7e709	Align COPYRIGHT and LICENSE files to the house standard format	2026-09-26 14:56:14 -05:00
Eric Rakestraw	a803799502	Align licensing documentation to LGPL-3.0-or-later	2026-09-26 14:06:25 -05:00
Eric Rakestraw	01b437e6ed	Align licensing documentation to LGPL-3.0-or-later	2026-09-26 14:02:44 -05:00
Eric Rakestraw	e6ced0d3d1	Prepare ConfigKit v0.4.0	2026-09-23 22:34:50 +00:00
Eric Rakestraw	73ce6e9e31	Add overlay migration regression coverage	2026-09-23 22:31:32 +00:00
Eric Rakestraw	ae91f57bbe	Rename selected configuration profiles to overlays	2026-09-23 18:27:29 +00:00
Eric Rakestraw	66e080ed34	Plan the staged overlay rename	2026-09-23 18:20:25 +00:00
Eric Rakestraw	d8d9dbfe7f	Plan the breaking rename from profiles to overlays	2026-09-23 18:16:10 +00:00
Eric Rakestraw	aead20fae4	Simplify local release validation and publication	2026-09-23 18:10:37 +00:00
Eric Rakestraw	c5a2ddee7a	Document the simplified release workflow	2026-09-23 18:03:25 +00:00
Eric Rakestraw	418fefdeef	Align repository policies with current standards	2026-09-23 17:58:49 +00:00