feat(#1688): warn on stale model bake for static-frontmatter runtimes (#1692)

* docs(#1650): fix stale opencode install-path claim in core settings

* feat(#1688): warn on stale model bake for static-frontmatter runtimes

* chore(#1688): backfill changeset pr field with real PR number

* test(#1688): make resolveAgentDir assertions use path.join for windows

* docs(#1688): codify windows path-literal-in-assert anti-pattern + align test

docs/INVENTORY-MANIFEST.json

@@ -386,6 +386,7 @@
       "security.cjs",
       "semver-compare.cjs",
       "shell-command-projection.cjs",
+      "stale-bake-guard.cjs",
       "state-command-router.cjs",
       "state-document.cjs",
       "state.cjs",