feat(p8): meeting-studio demo + smoke-calendar; P8 verification green

Task 8.7: apps/meeting-studio (Vite, port 5178) — schedule a meeting, invite
attendees, toggle per-attendee recording consent, generate transcript (BLOCKED
until unanimous consent — KG-14), summarize, see AI summary + action-item inbox.
scripts/smoke-calendar.mjs proves the P8 guarantees end to end: direct schedule,
consent gate BLOCKED→READY (KG-14), summary linked to a P7 ai_artifact, action
items, attendee-visibility exclusion (Scenario 6), meeting_request genesis,
simulated provider sync (idempotent).

P8 verification: 95 tests green, pnpm -r build all packages+demos, boundary
passes and fails on meeting-web->service, smoke-calendar PASS, prior smokes
(realtime/inbox/support/adapter/route/ai) PASS.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/meeting-studio/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "meeting-studio",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite --port 5178",
+    "build": "vite build"
+  },
+  "dependencies": {
+    "@insignia/iios-meeting-web": "workspace:*",
+    "@insignia/iios-kernel-client": "workspace:*",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
+  },
+  "devDependencies": {
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
+    "@vitejs/plugin-react": "^4.3.4",
+    "typescript": "^5.7.3",
+    "vite": "^6.0.7"
+  }
+}