feat: WP-0005 adoption polish — doc sync, fleet parity, CI lint

- Add make agents-sync-package and release-check parity gate
- Add tests/test_packaged_agents_parity.py; sync packaged agents with agents/
- Update install docs (HELLO_WORLD, CLI_CHEAT_SHEET, AGENT_DISTRIBUTION)
- Expand PACKAGE_RELEASE.md secrets setup and pre-tag checklist
- Add flake8 to Gitea CI; CHANGELOG Unreleased for v1.2.0
- Expand INTEGRATION_PATTERNS activity-core handoff checklist

docs/integrations/helix-forge-correlation.md

@@ -93,11 +93,16 @@ documenting expected fields — no ingestion code runs in kaizen-agentic.
 | [DESIGN-session-memory.md](https://github.com/coulomb/agentic-resources/blob/main/docs/DESIGN-session-memory.md) | agentic-resources |
 | `session_memory/core/store.py` — `get_digest()` | agentic-resources |
 
-agentic-resources should link back to this document from its session-memory design
-notes when documenting downstream consumers of `session_uid`.
+**Reciprocal link status:** agentic-resources should link back to this document from
+its session-memory design notes. As of WP-0005, verify
+`agentic-resources/docs/DESIGN-session-memory.md` (or successor) cites this URL:
+
+`https://gitea.coulomb.social/coulomb/kaizen-agentic/src/branch/main/docs/integrations/helix-forge-correlation.md`
+
+Open a cross-repo issue if the link is missing.
 
 ## Non-goals
 
 - No Claude/Codex/Grok JSONL ingestion in kaizen-agentic
 - No write path to Helix Forge from kaizen-agentic CLI
-- No merge of fleet baselines into project `summary.json` (Coach may cite both)
+- No merge of fleet baselines into project `summary.json` (Coach may cite both)