feat: qualify Pi runtime cutover foundation

package.json

@@ -37,6 +37,9 @@
         "build": "pnpm run build:vite && node scripts/bundle-opencode.mjs && node scripts/run-electron-builder.mjs",
         "build:vite": "node --max-old-space-size=6144 ./node_modules/vite/bin/vite.js build",
         "perf:budget": "node scripts/check-performance-budget.mjs",
+        "probe:pi-runtime": "node scripts/probe-pi-runtime.mjs --stage",
+        "probe:pi-runtime:packaged": "node scripts/probe-pi-packaged-runtime.mjs",
+        "probe:pi-provider-contracts": "node scripts/probe-pi-provider-contracts.mjs",
         "bundle:opencode": "node scripts/bundle-opencode.mjs",
         "lint": "eslint . --fix",
         "lint:check": "eslint .",
@@ -84,6 +87,7 @@
     "dependencies": {
         "@napi-rs/canvas": "0.1.100",
         "@monaco-editor/react": "^4.7.0",
+        "@earendil-works/pi-coding-agent": "0.84.2",
         "@playwright/mcp": "0.0.78",
         "adm-zip": "0.5.16",
         "diff": "^9.0.0",