feat(agent): runner wire contract and tool execution

.gitignore

@@ -12,6 +12,8 @@
 **/*dont_commit_me*
 web/packages/agenta-api-client/dist/
 web/tsconfig.tsbuildinfo
+# Agent Pi extension bundle, built by `pnpm run build:extension` and in the Docker image.
+services/agent/dist/
 
 __pycache__/
 **/__pycache__/

services/agent/.dockerignore

@@ -0,0 +1,3 @@
+node_modules
+*.log
+.git

services/agent/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "agenta-agent-pi-wrapper",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "packageManager": "pnpm@10.30.0",
+  "description": "WP-2: thin TypeScript wrapper that drives the Pi agent harness for one run. Reads a JSON request on stdin, returns a JSON result on stdout.",
+  "scripts": {
+    "run:cli": "tsx src/cli.ts",
+    "serve": "tsx src/server.ts",
+    "serve:watch": "tsx watch src/server.ts",
+    "build:extension": "node scripts/build-extension.mjs",
+    "login": "pi"
+  },
+  "dependencies": {
+    "@daytonaio/sdk": "^0.187.0",
+    "@earendil-works/pi-coding-agent": "0.79.4",
+    "@opentelemetry/api": "1.9.0",
+    "@opentelemetry/exporter-trace-otlp-proto": "0.54.0",
+    "@opentelemetry/resources": "1.28.0",
+    "@opentelemetry/sdk-trace-base": "1.28.0",
+    "@opentelemetry/sdk-trace-node": "1.28.0",
+    "@opentelemetry/semantic-conventions": "1.28.0",
+    "@zed-industries/claude-agent-acp": "^0.23.1",
+    "pi-acp": "0.0.29",
+    "sandbox-agent": "0.4.2"
+  },
+  "devDependencies": {
+    "@types/node": "22.10.2",
+    "esbuild": "0.23.1",
+    "tsx": "4.19.2"
+  },
+  "pnpm": {
+    "onlyBuiltDependencies": [
+      "@sandbox-agent/cli-linux-x64",
+      "@sandbox-agent/cli-darwin-arm64",
+      "@sandbox-agent/cli-darwin-x64",
+      "@sandbox-agent/cli-linux-arm64",
+      "esbuild"
+    ]
+  }
+}