chore: bump pi-coding-agent + pi-ai to 0.70.0

Jumps engine, cli, and dashboard from 0.62.0 → 0.70.0. Replaces the
@sinclair/typebox 0.34.x dep with typebox@^1 (SDK migrated in 0.69).
Picks up eight releases of provider-side reliability fixes (Anthropic,
OpenAI Responses/Codex, Bedrock, OpenRouter, Kimi), Opus 4.7 adaptive
thinking support, and a uuid security bump. Code migrations follow in
subsequent commits.

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

packages/engine/package.json

@@ -36,9 +36,9 @@
   },
   "dependencies": {
     "@fusion/core": "workspace:*",
-    "@mariozechner/pi-ai": "^0.62.0",
-    "@mariozechner/pi-coding-agent": "^0.62.0",
-    "@sinclair/typebox": "^0.34.48",
+    "@mariozechner/pi-ai": "^0.70.0",
+    "@mariozechner/pi-coding-agent": "^0.70.0",
+    "typebox": "^1.0.0",
     "cron-parser": "^5.5.0"
   },
   "devDependencies": {