feat(claude): add 6 lifecycle hooks reinforcing template hard rules

Project-level Claude Code hooks committed to .claude/settings.json with
scripts under .claude/hooks/. Three tiers:

Tier 1 — hard guards (exit 2 to block the tool call):
- bash-guard.sh: blocks bypass flags (verify-skip, sign-skip), forceful
  push variants, destructive resets, force clean, working-tree-wipe
  checkouts/restores, force branch delete, amend, and rm -rf against
  root or home. Reinforces CLAUDE.md Git Safety Protocol.
- generator-first-nudge.sh: blocks creating a new top-level
  packages/<name> or apps/<name> directory by hand. Allows working
  inside an existing package. Reinforces the non-negotiable
  generator-first rule.

Tier 2 — context injection (stdout becomes additional context):
- session-start.sh: prints glossary, AGENTS.md, workflow CLI, and
  conformance pointers on session boot.
- prompt-context.sh: keyword-matches the user prompt against eight
  concept groups (events, realtime, audit, instrumentation, manifest,
  workflow, DI, boundaries) and injects the relevant ADR + rule
  pointers for the turn.

Tier 3 — side-effect automation:
- post-manifest-edit.sh: when Edit/Write touches feature.manifest.ts,
  prints the manifest-first ordering reminder plus the per-feature
  verify commands.
- stop-check-manifest-tests.sh: at agent Stop time, if the working
  tree has manifest changes but no sibling test changes, exits 2 to
  force continuation. Loop-guarded via stop_hook_active.

All hooks are bash + jq, use CLAUDE_PROJECT_DIR for safety, and were
smoke-tested end-to-end (block + allow paths both verified).

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

.claude/hooks/session-start.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# Tier 2 — surfaces a fresh session's "where to look first" pointers.
+# Output on stdout is injected as additional context.
+
+cat <<'EOF'
+=== template-vertical session pointers ===
+Canonical vocabulary: docs/glossary.md  (resolve "what does X mean here?" first)
+Architecture: AGENTS.md, docs/architecture/overview.md, docs/architecture/agent-first-workflow-and-conformance.md
+Workflow: pnpm work status | pnpm work next | pnpm work dispatch (ADR-019)
+Generator-first: pnpm turbo gen <kind> beats hand-rolled scaffolding (non-negotiable)
+Conformance: pnpm conformance + pnpm fallow (5-gate drift detection)
+Skills: to-prd, grill-with-docs, grill-me, handoff (.claude/skills/)
+EOF
+
+exit 0