docs(omo-codex): batch 39 (4 files)

packages/omo-codex/plugin/components/rules/.github/pull_request_template.md

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+## Summary
+
+<!-- Brief description, 1-3 bullets -->
+
+-
+
+## Verification
+
+- [ ] `npm run check` (typecheck + biome + build)
+- [ ] `npm test` (unit tests)
+- [ ] `npm pack --dry-run` (release sanity)
+- [ ] Hook smoke-tested locally with `node dist/cli.js hook session-start`
+- [ ] Hook smoke-tested locally with `node dist/cli.js hook post-tool-use`
+
+## Codex plugin impact
+
+- [ ] `.codex-plugin/plugin.json` remains valid
+- [ ] `hooks/hooks.json` still uses stable Codex hook JSON
+- [ ] Session deduplication behavior is covered by tests
+- [ ] CHANGELOG entry added for user-facing changes