Add explicit path import traversal

docs/internal/extraction.md

@@ -112,6 +112,18 @@ Assigned to explicit import traversal and glob handling:
   traversal, canonical containment, cycle/diamond routes, and fixed source IDs.
   Canonical paths—not `os.SameFile`—define identity, so hard links remain distinct.
 
+Path-import implementation record (2026-09-06): `splitImportDirectives`,
+`parseImportDeclaration`, `importFilesystem`, `importTraversal.visitPath`, and
+`loadImportedDocuments` in `imports.go` adapt the assigned envelope, loading, source,
+and failure mechanics. The corresponding ConfigKit tests adapt the assigned
+declaration-order, disjoint composition, keyed-entry, all-source conflict, unsafe
+target, alias, imported parse/schema, and relative-resolution cases. ConfigKit adds
+recursive bounded DFS, `os.OpenRoot` confinement, canonical symlink identity,
+cycle/diamond route locations, optional-path semantics, aggregate budgets, and
+fragment version-placement enforcement. The planned glob syntax is parsed but
+remains explicitly unavailable for its next owning work; hard links intentionally
+replace Narratio's same-file rejection with path identity.
+
 ### Profiles and overlay
 
 Assigned to selected-profile overlay: