Merge branch 'main' into split/sandbox-flags

docs/reference/configuration.md

@@ -322,6 +322,12 @@ their corresponding top-level category object in your `settings.json` file.
   - **Default:** `"tips"`
   - **Values:** `"tips"`, `"witty"`, `"all"`, `"off"`
 
+- **`ui.errorVerbosity`** (enum):
+  - **Description:** Controls whether recoverable errors are hidden (low) or
+    fully shown (full).
+  - **Default:** `"low"`
+  - **Values:** `"low"`, `"full"`
+
 - **`ui.customWittyPhrases`** (array):
   - **Description:** Custom witty phrases to display during loading. When
     provided, the CLI cycles through these instead of the defaults.
@@ -357,6 +363,15 @@ their corresponding top-level category object in your `settings.json` file.
   - **Default:** `true`
   - **Requires restart:** Yes
 
+#### `billing`
+
+- **`billing.overageStrategy`** (enum):
+  - **Description:** How to handle quota exhaustion when AI credits are
+    available. 'ask' prompts each time, 'always' automatically uses credits,
+    'never' disables credit usage.
+  - **Default:** `"ask"`
+  - **Values:** `"ask"`, `"always"`, `"never"`
+
 #### `model`
 
 - **`model.name`** (string):