feat(events): add mana-events service + public RSVP flow (Phase 1b)

New Hono+Bun service at services/mana-events on port 3065 with two
schemas in mana_platform: events_published (snapshots) and public_rsvps
(unauthenticated responses), plus a per-token hourly rate-limit bucket.

- Host endpoints (JWT) for publish/update/unpublish/list-rsvps
- Public endpoints for snapshot fetch + RSVP upsert with rate limiting
- New /rsvp/[token] page outside the auth gate, SSR-loads the snapshot
- Client store wires publishEvent/unpublishEvent to the server, syncs
  snapshot updates after edits, and deletes the snapshot on event delete
- DetailView polls GET /events/:id/rsvps every 30s while open and lets
  hosts import a public response into their local guest list
- generate-env, setup-databases.sh, .env.development, hooks.server.ts,
  package.json wired for local dev

package.json

@@ -51,6 +51,7 @@
 		"dev:chat:landing": "pnpm --filter @chat/landing dev",
 		"dev:chat:app": "concurrently -n api,web -c yellow,cyan \"pnpm dev:api\" \"pnpm dev:chat:web\"",
 		"dev:auth": "cd services/mana-auth && bun run --watch src/index.ts",
+		"dev:events": "cd services/mana-events && bun run --watch src/index.ts",
 		"dev:sync": "cd services/mana-sync && JWKS_URL=http://localhost:3001/api/auth/jwks DATABASE_URL=postgresql://mana:devpassword@localhost:5432/mana_sync ./server",
 		"dev:sync:build": "cd services/mana-sync && go build -o server ./cmd/server",
 		"dev:chat:full": "concurrently -n auth,sync,api -c blue,magenta,yellow \"pnpm dev:auth\" \"pnpm dev:sync\" \"pnpm dev:api\"",