refactor: finish companion rename migration

Complete the remaining pi-to-companion rename across companion-os, web, vm-orchestrator, docker, and archived fixtures.

Verification:
- semantic rg sweeps for Pi/piConfig/getPi/.pi runtime references
- npm run check in apps/companion-os (fails in this worktree: biome not found)

Co-authored-by: Codex <noreply@openai.com>

packages/pi-teams/tsconfig.json

@@ -1,14 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "ESNext",
-    "module": "NodeNext",
-    "moduleResolution": "NodeNext",
-    "esModuleInterop": true,
-    "forceConsistentCasingInFileNames": true,
-    "strict": true,
-    "skipLibCheck": true,
-    "outDir": "dist"
-  },
-  "include": ["src/**/*", "extensions/**/*"],
-  "exclude": ["node_modules", "dist"]
-}