Fix agent output validation to prevent false verified status (#807)

* Changes from fix/cursor-fix

* feat: Enhance provider error messages with diagnostic context, address test failure, fix port change, move playwright tests to different port

* Update apps/ui/src/components/views/board-view/dialogs/add-feature-dialog.tsx

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* ci: Update test server port from 3008 to 3108 and add environment configuration

* fix: Correct typo in health endpoint URL and standardize port env vars

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

libs/types/src/index.ts

@@ -202,6 +202,7 @@ export {
   getThinkingTokenBudget,
   isAdaptiveThinkingModel,
   getThinkingLevelsForModel,
+  normalizeThinkingLevelForModel,
   getDefaultThinkingLevel,
   // Event hook constants
   EVENT_HOOK_TRIGGER_LABELS,

libs/types/src/provider.ts

@@ -260,7 +260,13 @@ export interface ContentBlock {
  */
 export interface ProviderMessage {
   type: 'assistant' | 'user' | 'error' | 'result';
-  subtype?: 'success' | 'error' | 'error_max_turns' | 'error_max_structured_output_retries';
+  subtype?:
+    | 'success'
+    | 'error'
+    | 'error_max_turns'
+    | 'error_max_structured_output_retries'
+    | 'error_during_execution'
+    | 'error_max_budget_usd';
   session_id?: string;
   message?: {
     role: 'user' | 'assistant';

libs/types/src/settings.ts

@@ -349,6 +349,28 @@ export function getThinkingLevelsForModel(model: string): ThinkingLevel[] {
   return ['none', 'low', 'medium', 'high', 'ultrathink'];
 }
 
+/**
+ * Normalize a selected thinking level to a value supported by the target model.
+ * Prefers preserving the selected level, falls back to 'none' when available.
+ */
+export function normalizeThinkingLevelForModel(
+  model: string,
+  thinkingLevel: ThinkingLevel | undefined
+): ThinkingLevel {
+  const availableLevels = getThinkingLevelsForModel(model);
+  const currentLevel = thinkingLevel || 'none';
+
+  if (availableLevels.includes(currentLevel)) {
+    return currentLevel;
+  }
+
+  if (availableLevels.includes('none')) {
+    return 'none';
+  }
+
+  return availableLevels[0];
+}
+
 /**
  * Get the default thinking level for a given model.
  * Used when selecting a model via the primary button in the two-stage selector.