move pi-mono into companion-cloud as apps/companion-os

- Copy all pi-mono source into apps/companion-os/
- Update Dockerfile to COPY pre-built binary instead of downloading from GitHub Releases
- Update deploy-staging.yml to build pi from source (bun compile) before Docker build
- Add apps/companion-os/** to path triggers
- No more cross-repo dispatch needed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/tui/package.json

@@ -0,0 +1,52 @@
+{
+  "name": "@mariozechner/pi-tui",
+  "version": "0.56.2",
+  "description": "Terminal User Interface library with differential rendering for efficient text-based applications",
+  "type": "module",
+  "main": "dist/index.js",
+  "scripts": {
+    "clean": "shx rm -rf dist",
+    "build": "tsgo -p tsconfig.build.json",
+    "dev": "tsgo -p tsconfig.build.json --watch --preserveWatchOutput",
+    "test": "node --test --import tsx test/*.test.ts",
+    "prepublishOnly": "npm run clean && npm run build"
+  },
+  "files": [
+    "dist/**/*",
+    "README.md"
+  ],
+  "keywords": [
+    "tui",
+    "terminal",
+    "ui",
+    "text-editor",
+    "differential-rendering",
+    "typescript",
+    "cli"
+  ],
+  "author": "Mario Zechner",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/getcompanion-ai/co-mono.git",
+    "directory": "packages/tui"
+  },
+  "engines": {
+    "node": ">=20.0.0"
+  },
+  "types": "./dist/index.d.ts",
+  "dependencies": {
+    "@types/mime-types": "^2.1.4",
+    "chalk": "^5.5.0",
+    "get-east-asian-width": "^1.3.0",
+    "marked": "^15.0.12",
+    "mime-types": "^3.0.1"
+  },
+  "optionalDependencies": {
+    "koffi": "^2.9.0"
+  },
+  "devDependencies": {
+    "@xterm/headless": "^5.5.0",
+    "@xterm/xterm": "^5.5.0"
+  }
+}