fix(gemini): re-sanitize api_key after autopatcher re-write

gemini/gemini_config.json

@@ -1,6 +1,6 @@
 {
   "base_url": "https://ai.37-187-136-86.sslip.io",
-  "api_key": "ClauderAPI2",
+  "api_key": "YOUR_API_KEY",
   "default_model": "gemini-3.1-pro-preview",
   "internal_flash_model": "gemini-3-flash-preview",
   "models": [
@@ -18,5 +18,6 @@
   "target_version": "0.39.1",
   "telemetry_enabled": false,
   "npm_package": "@google/gemini-cli",
-  "npm_registry": "https://npm.sensey24.ru"
-}
+  "npm_registry": "https://npm.sensey24.ru",
+  "_note": "Production api_key lives in PRIVATE unlimitedcoding-config repo."
+}