chore(plugins): sync generated content mirrors

Regenerate plugins/*/skills/ from plugins/*/.apm/ after the previous
four commits, via scripts/sync-plugin-content.sh --all. The mirror is
generated output (ADR-0017) that check-plugin-content-sync's pre-push
hook diffs against .apm/; nothing here is hand-edited.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EeH8SCbcrCAQrtymkNuhKP

plugins/kyberforge/skills/skill-audit/references/validation-scripts.md

@@ -105,6 +105,19 @@ Three ways to read the result wrong:
   is not a directory, a directory holding no `SKILL.md`, a missing or extra argument, and an absent
   `python3` all exit **2** with a message on stderr. Exit 2 means the script never ran — report it
   as an unaudited dimension, never as a pass and never as a finding. Exit 1 is findings.
+- **A check-9 INFO — `'<field>' changed for '<slug>' since <ref>` — means go read, not just relay.**
+  Check 9 diffs the current `references/sources.md` against a base ref (default: the merge base with
+  `origin/main`) and flags a slug whose `Description` or `Contributing files` text differs. It is
+  structurally incapable of telling you whether the new wording is still *true* — it only detects
+  that the text changed — so when this INFO fires, open the Contributing files it names and the
+  document named in that slug's `Research doc:` field, and confirm by reading whether the (possibly
+  strengthened) claim genuinely holds. This is the one provenance finding this script cannot verify
+  for you: every other check here is a structural fact you can relay as-is, but check 9's job is
+  only to tell you *where* to spend that reading effort, not to replace it. Acknowledging the INFO
+  without opening those files is not auditing it. A single INFO naming "no base ref could be
+  resolved" or "no repo root above the skill directory" is the same graceful-skip pattern as every
+  other check here that cannot run — treat it as an unaudited dimension for that reason, not as a
+  finding about the skill.
 - **`vale` reports `0 files`.** Treat the pass as NOT RUN, not as clean, and fall back to full
   Step 3 judgment for the dimensions it would have covered. The bundled `Kyberforge` style is
   scoped by glob in `assets/vale/.vale.ini`; a file outside those globs is silently not linted.