chore: add Claude Project Knowledge sync tooling

- scripts/sync-claude-docs.sh with sync/check/list/help subcommands
- scripts/install-claude-sync-hooks.sh for one-time hook setup
- .githooks/post-commit auto-syncs on dev-doc changes
- .githooks/pre-push warns (non-blocking) on stale sync
- .claude-sync.conf lists 11 synced documents
- SYNC_MANIFEST.md provides drift-detection anchor for Claude Chat
- package.json: npm run sync:docs | sync:check
- .gitignore excludes .claude-sync/ output directory

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/README.md

@@ -0,0 +1,40 @@
+# Scripts
+
+Repo-level helper scripts.
+
+## Claude Project Knowledge sync
+
+Keeps the Crewli dev-docs in Claude Project Knowledge aligned with the repo.
+
+### One-time setup
+
+```bash
+bash scripts/install-claude-sync-hooks.sh
+```
+
+This points git at `.githooks/` and marks the hooks executable.
+
+### Manual trigger
+
+```bash
+npm run sync:docs     # regenerate .claude-sync/
+npm run sync:check    # verify .claude-sync/ matches dev-docs
+```
+
+The underlying script also supports `list` and `help`:
+
+```bash
+bash scripts/sync-claude-docs.sh list
+bash scripts/sync-claude-docs.sh help
+```
+
+### Automatic
+
+- `post-commit`: syncs automatically when any file in `.claude-sync.conf` is committed
+- `pre-push`: warns if `.claude-sync/` is stale before pushing (non-blocking)
+
+### After sync
+
+Upload everything in `.claude-sync/` (including `SYNC_MANIFEST.md`) to the
+Crewli Claude Project Knowledge, replacing existing versions. The manifest is
+what Claude Chat uses for drift detection against the current HEAD.