fix(#2695): deliver the complete four-file codex hook set for every profile (#2822)

* test(#2695): failing-first regression for codex hook worker/registry omission

* fix(#2695): deliver the complete four-file codex hook set for every profile

* test(#2695): regenerate codex install-tree + acknowledge emitted hook ripple

* test(#2695): pin core config.toml/hooks.json wiring + fix agent-extension guard (review)

* docs(changeset): backfill #2695 PR number to 2822

* fix(#2695): SessionStart wiring assertion is extension-portable (Windows .cmd shim)

tests/fixtures/install-tree/codex.json

@@ -433,8 +433,10 @@
   "gsd-core/workflows/validate-phase.md",
   "gsd-core/workflows/verify-phase.md",
   "gsd-core/workflows/verify-work.md",
+  "hooks/gsd-check-update-worker.js",
   "hooks/gsd-check-update.js",
   "hooks/gsd-context-monitor.js",
+  "hooks/managed-hooks-registry.cjs",
   "scripts/changeset/README.md",
   "scripts/changeset/cli.cjs",
   "scripts/changeset/github-release-notes.cjs",