feat(adapter): claude local chrome flag and max-turns session handling

Add --chrome flag support for Claude adapter. Detect max-turns
exhaustion (via subtype, stop_reason, or result text) and clear
the session to prevent stale session re-use. Add unit tests.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ui/src/adapters/claude-local/config-fields.tsx

@@ -24,6 +24,20 @@ export function ClaudeLocalAdvancedFields({
 }: AdapterConfigFieldsProps) {
   return (
     <>
+      <ToggleField
+        label="Enable Chrome"
+        hint={help.chrome}
+        checked={
+          isCreate
+            ? values!.chrome
+            : eff("adapterConfig", "chrome", config.chrome === true)
+        }
+        onChange={(v) =>
+          isCreate
+            ? set!({ chrome: v })
+            : mark("adapterConfig", "chrome", v)
+        }
+      />
       <ToggleField
         label="Skip permissions"
         hint={help.dangerouslySkipPermissions}