Record authorized PR integration and validation

docs/implementation.md

@@ -304,3 +304,20 @@ were needed for this presentation-only cleanup.
 - Delivery: [PR #31](https://git.sendico.io/tech/sxchnge/pulls/31), pushed and
   unmerged. Task and PR metadata verified: frontend label, tech owner, SXCHNGE
   project. Retarget after workspace #29 merges.
+
+## Authorized integration — 2026-09-12
+
+The user requested merging all open PRs. Skills #17, KYC #21, limits/workspace #23
+and UX plan #25 have merged into main. Workspace #29 had already merged into
+limits-22 and reached main through #23. Architecture #31 is the final integration
+PR and carries this record.
+
+Resolved documentation conflicts by preserving both contribution histories.
+Preserved the latest implemented workspace plan rather than restoring the older
+held-funds design. Skill moves retain the newer simplicity guidance, and root
+AGENTS.md points to .agents/skills while retaining the architecture requirements.
+No frontend source was changed by conflict resolution. Older unmerged/stack notes
+above describe delivery-time state and are superseded by this integration record.
+
+Validation of the combined tree: all 115 frontend tests and app analysis passed;
+diff checks passed. Branches were retained. No checks were bypassed.