chore(adapter): delete adapter packages and drop build wiring

Removes the four workspace adapter packages (claude-local, codex-local,
gemini-local, adapter-utils) now that all runtime provider dispatch lives
in @mariozechner/pi-ai + pi-agent-core + pi-coding-agent. Refreshes the
lockfile, drops bundledMainDependencies from the Vite config, and adds
pi-coding-agent as a direct dependency for the worker's coding tools.

package.json

@@ -34,10 +34,9 @@
     "postinstall": "node scripts/postinstall.mjs"
   },
   "dependencies": {
-    "@agentcompany/adapter-claude-local": "workspace:*",
-    "@agentcompany/adapter-codex-local": "workspace:*",
-    "@agentcompany/adapter-gemini-local": "workspace:*",
-    "@agentcompany/adapter-utils": "workspace:*",
+    "@mariozechner/pi-agent-core": "^0.67.6",
+    "@mariozechner/pi-ai": "^0.67.6",
+    "@mariozechner/pi-coding-agent": "^0.67.6",
     "@phosphor-icons/react": "2.1.10",
     "@tanstack/react-virtual": "^3.13.23",
     "electron-log": "5.4.3",