fix(core): revert retryFetchErrors default to false

This change reverts the default value of retryFetchErrors to false.
It will be handled separately in a future update.

docs/reference/configuration.md

@@ -146,7 +146,7 @@ their corresponding top-level category object in your `settings.json` file.
 - **`general.retryFetchErrors`** (boolean):
   - **Description:** Retry on "exception TypeError: fetch failed sending
     request" errors.
-  - **Default:** `true`
+  - **Default:** `false`
 
 - **`general.maxAttempts`** (number):
   - **Description:** Maximum number of attempts for requests to the main chat

packages/cli/src/config/settingsSchema.ts

@@ -306,7 +306,7 @@ const SETTINGS_SCHEMA = {
         label: 'Retry Fetch Errors',
         category: 'General',
         requiresRestart: false,
-        default: true,
+        default: false,
         description:
           'Retry on "exception TypeError: fetch failed sending request" errors.',
         showInDialog: false,

packages/core/src/config/config.ts

@@ -1014,7 +1014,7 @@ export class Config implements McpContext, AgentLoopContext {
           params.gemmaModelRouter?.classifier?.model ?? 'gemma3-1b-gpu-custom',
       },
     };
-    this.retryFetchErrors = params.retryFetchErrors ?? true;
+    this.retryFetchErrors = params.retryFetchErrors ?? false;
     this.maxAttempts = Math.min(
       params.maxAttempts ?? DEFAULT_MAX_ATTEMPTS,
       DEFAULT_MAX_ATTEMPTS,

schemas/settings.schema.json

@@ -131,8 +131,8 @@
         "retryFetchErrors": {
           "title": "Retry Fetch Errors",
           "description": "Retry on \"exception TypeError: fetch failed sending request\" errors.",
-          "markdownDescription": "Retry on \"exception TypeError: fetch failed sending request\" errors.\n\n- Category: `General`\n- Requires restart: `no`\n- Default: `true`",
-          "default": true,
+          "markdownDescription": "Retry on \"exception TypeError: fetch failed sending request\" errors.\n\n- Category: `General`\n- Requires restart: `no`\n- Default: `false`",
+          "default": false,
           "type": "boolean"
         },
         "maxAttempts": {