Cap Thinking Budget to prevent runaway thought loops (#12416)

# Conflicts:
#	docs/get-started/configuration.md
#	schemas/settings.schema.json

Author: abhipatel12

docs/get-started/configuration.md

@@ -456,6 +456,40 @@ their corresponding top-level category object in your `settings.json` file.
   - **Description:** Enable model routing to route requests to the best model
     based on complexity.
   - **Default:** `false`
+<<<<<<< HEAD
+=======
+  - **Requires restart:** Yes
+
+- **`experimental.codebaseInvestigatorSettings.maxNumTurns`** (number):
+  - **Description:** Maximum number of turns for the Codebase Investigator
+    agent.
+  - **Default:** `15`
+  - **Requires restart:** Yes
+
+- **`experimental.codebaseInvestigatorSettings.maxTimeMinutes`** (number):
+  - **Description:** Maximum time for the Codebase Investigator agent (in
+    minutes).
+  - **Default:** `5`
+  - **Requires restart:** Yes
+
+- **`experimental.codebaseInvestigatorSettings.thinkingBudget`** (number):
+  - **Description:** The thinking budget for the Codebase Investigator agent.
+  - **Default:** `8192`
+  - **Requires restart:** Yes
+
+- **`experimental.codebaseInvestigatorSettings.model`** (string):
+  - **Description:** The model to use for the Codebase Investigator agent.
+  - **Default:** `"gemini-2.5-pro"`
+  - **Requires restart:** Yes
+
+#### `hooks`
+
+- **`hooks`** (object):
+  - **Description:** Hook configurations for intercepting and customizing agent
+    behavior.
+  - **Default:** `{}`
+  <!-- SETTINGS-AUTOGEN:END -->
+>>>>>>> 59e0b10e (Cap Thinking Budget to prevent runaway thought loops (#12416))
 
 #### `mcpServers`
 

packages/cli/src/config/settingsSchema.ts

@@ -1137,7 +1137,7 @@ const SETTINGS_SCHEMA = {
             label: 'Thinking Budget',
             category: 'Experimental',
             requiresRestart: true,
-            default: -1,
+            default: 8192,
             description:
               'The thinking budget for the Codebase Investigator agent.',
             showInDialog: false,

packages/core/src/config/models.ts

@@ -12,8 +12,8 @@ export const DEFAULT_GEMINI_MODEL_AUTO = 'auto';
 
 export const DEFAULT_GEMINI_EMBEDDING_MODEL = 'gemini-embedding-001';
 
-// Some thinking models do not default to dynamic thinking which is done by a value of -1
-export const DEFAULT_THINKING_MODE = -1;
+// Cap the thinking at 8192 to prevent run-away thinking loops.
+export const DEFAULT_THINKING_MODE = 8192;
 
 /**
  * Determines the effective model to use, applying fallback logic if necessary.