fix: declare networkAccess in package.json figma-plugin block (single source of truth); drop redundant inject-manifest post-build hack (also fixes watch mode losing networkAccess); bump 0.1.13

manifest.json

@@ -1,23 +1 @@
-{
-  "api": "1.0.0",
-  "editorType": [
-    "figma"
-  ],
-  "id": "ai-plugin-mvp",
-  "name": "AI assistant (MVP)",
-  "main": "build/main.js",
-  "ui": "build/ui.js",
-  "relaunchButtons": [
-    {
-      "name": "Запустить AI assistant",
-      "command": "runAI"
-    }
-  ],
-  "networkAccess": {
-    "allowedDomains": [
-      "https://api.apinex.bond",
-      "https://apinex.bond",
-      "https://example.com"
-    ]
-  }
-}
+{"api":"1.0.0","editorType":["figma"],"id":"ai-plugin-mvp","name":"AI assistant (MVP)","main":"build/main.js","ui":"build/ui.js","relaunchButtons":[{"name":"Запустить AI assistant","command":"runAI"}],"networkAccess":{"allowedDomains":["https://api.apinex.bond","https://apinex.bond","https://example.com"]}}