feat(p7): ai-studio demo + smoke-ai; P7 verification green

Task 7.6: apps/ai-studio (Vite, port 5177) — ingest a message, run CLASSIFY/
SUMMARIZE/EXTRACT, see proposal cards with confidence, evidence citations,
abstention, model/cost + a budget meter, and accept/reject; built on the ai-web
SDK via AiProvider. scripts/smoke-ai.mjs proves the P7 guarantees end to end:
auto-CLASSIFY → AI flag → routing REVIEW/DENY never ALLOW (KG-05), summary cites
evidence, EXTRACT stays DISCUSSION (Scenario 7), replay-once, accept.

P7 verification: 79 tests green (3x stable), pnpm -r build all packages+demos,
boundary passes and fails on ai-web->service, smoke-ai PASS, prior smokes
(realtime/inbox/support/adapter/route) PASS.

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

apps/ai-studio/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "ai-studio",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite --port 5177",
+    "build": "vite build"
+  },
+  "dependencies": {
+    "@insignia/iios-ai-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"
+  }
+}