feat: multi-format env var editor for deployment config

Replace simple key-value rows with EnvEditor component that supports
editing variables as Table, Properties, YAML, or .env format.
Switching views converts data seamlessly. Includes file import
(drag-and-drop .properties/.yaml/.env) with auto-detect and merge.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/package.json

@@ -15,8 +15,9 @@
     "postinstall": "node -e \"const fs=require('fs');fs.mkdirSync('public',{recursive:true});fs.copyFileSync('node_modules/@cameleer/design-system/assets/cameleer3-logo.svg','public/favicon.svg')\""
   },
   "dependencies": {
-    "@cameleer/design-system": "^0.1.42",
+    "@cameleer/design-system": "^0.1.43",
     "@tanstack/react-query": "^5.90.21",
+    "js-yaml": "^4.1.1",
     "lucide-react": "^1.7.0",
     "openapi-fetch": "^0.17.0",
     "react": "^19.2.4",
@@ -29,6 +30,7 @@
   "devDependencies": {
     "@eslint/js": "^9.39.4",
     "@playwright/test": "^1.58.2",
+    "@types/js-yaml": "^4.0.9",
     "@types/node": "^24.12.0",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",