chore(template): clean-slate template snapshot from bb4a0c7

Curated, product-agnostic snapshot of the post-story-04 tree: demo
content deleted, auth-only reference feature, web-next shell, all gates
green. Product-specific docs, ADRs 027-029, PRDs/epics/archive, editor
library traces, and product naming are curated out; generic template
repairs (coverage provider devDeps, root test:coverage script, live
lint fixes, root-only release-please) are kept. See TEMPLATE.md for
provenance, curation list, and usage.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

.claude/hooks/post-manifest-edit.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+# Tier 3 — when a feature.manifest.ts is edited, remind the agent to surface
+# drift and follow manifest-first ordering. Non-blocking (stderr exit 0 is
+# visible in transcript; we don't want this to kill the agent's flow).
+
+set -euo pipefail
+
+input=$(cat)
+file_path=$(printf '%s' "$input" | jq -r '.tool_input.file_path // ""')
+
+if [[ "$file_path" != *"feature.manifest.ts" ]]; then
+  exit 0
+fi
+
+feature=$(echo "$file_path" | sed -nE 's|.*packages/([^/]+)/src/feature\.manifest\.ts$|\1|p')
+
+cat >&2 <<EOF
+[post-manifest-edit] feature.manifest.ts changed (${feature:-unknown feature})
+
+Manifest-first ordering reminder:
+  (1) manifest entry      ← you just did this
+  (2) contracts           — xInputSchema, xOutputSchema, IXUseCase
+  (3) tests (red)         — colocated *.test.ts
+  (4) implementation      — use-case + controller + DI binding
+
+Surface drift now:
+  pnpm --filter @repo/${feature:-<feature>} test typecheck lint
+  pnpm conformance
+EOF
+
+exit 0