Align ckprompt with released dependencies

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Shared reporting and PromptKit v0.20.0 implementation plan
 
-Status: implementation in progress; Stages 1–25 complete.
+Status: implementation complete; Stages 1–26 complete.
 
 ## Scope, authority, and execution
 
@@ -926,6 +926,28 @@ version; hosted delivery remains separately tracked under the release procedure.
 
 ## Stage 26: Final ckprompt alignment and end-to-end verification
 
+**Complete.** ckprompt v0.3.0 selects published core v0.4.0 and ckconfig
+v0.4.0, ConfigKit v1.1.0, and PromptKit v0.20.0. All three standalone suites
+and all three workspace suites passed with Go 1.27.0. Offline tidy left all
+module files unchanged. Fifteen documented standalone consumer invocations and
+16 additional workflows passed; the two invalid-fixture invocations returned
+their expected failures, as did native type rejection for zero/list overrides.
+Comparison assertions returned status 3, null overrides retained native evidence,
+and preview and smoke commands used the local fake client. ckprompt publication
+and hosted delivery remain separate operations.
+
+The tested fixtures are identified by Git blob IDs:
+
+| Consumer | Fixture | Blob |
+| --- | --- | --- |
+| simple | `before.yml` | `8192e75eb483dc5e206956632ecc36a641ead935` |
+| simple | `after.yml` | `a5fc1041a8756cfa8487b8abf9ed2e551bdba0d9` |
+| simple | `invalid.yml` | `455a1af8e1dd11cb728fce4334fb10d1b1d4ce2b` |
+| composed | `before.yml` | `9fc0c68178fea64b5ab5a46e547e25f82baf8c17` |
+| composed | `after.yml` | `e1c77fd6004b3114728c245648e01998e6a45858` |
+| composed | `topic.txt` | `4c1c8cf49d7b36c033b144ff0ec064f832f11283` |
+| composed | `notes.txt` | `4a5e2c8ddb220ae2bbc50868baab9cbbaa0a6263` |
+
 Pin released core and ckconfig versions providing the new APIs in ckprompt.
 Download and tidy with GOWORK off; retain real sums. Update the unpublished
 ckprompt candidate note (or fresh minor selected in Stage 24) with the final