refactor: update default phase models and thinking configurations

- Changed default phase models to use 'opus' for all phases, enhancing quality across spec creation, planning, coding, and QA.
- Updated thinking levels for each phase, introducing 'ultrathink' for spec creation and adjusting coding and QA levels to 'low' for faster iterations.

This refactor aims to optimize the overall performance and quality of the Auto profile.

auto-claude-ui/src/shared/constants/models.ts

@@ -49,20 +49,20 @@ export const THINKING_LEVELS = [
 // ============================================
 
 // Default phase model configuration for Auto profile
-// Optimized for each phase: fast discovery, quality planning, balanced coding, thorough QA
+// Uses Opus across all phases for maximum quality
 export const DEFAULT_PHASE_MODELS: PhaseModelConfig = {
-  spec: 'sonnet',     // Good quality specs without being too slow
+  spec: 'opus',       // Best quality for spec creation
   planning: 'opus',   // Complex architecture decisions benefit from Opus
-  coding: 'sonnet',   // Good balance of speed and quality for implementation
-  qa: 'sonnet'        // Thorough but not overly slow QA
+  coding: 'opus',     // Highest quality implementation
+  qa: 'opus'          // Thorough QA review
 };
 
 // Default phase thinking configuration for Auto profile
 export const DEFAULT_PHASE_THINKING: import('../types/settings').PhaseThinkingConfig = {
-  spec: 'medium',       // Moderate thinking for spec creation
-  planning: 'high',     // Deep thinking for planning complex features
-  coding: 'medium',     // Standard thinking for coding
-  qa: 'high'            // Thorough analysis for QA review
+  spec: 'ultrathink',   // Deep thinking for comprehensive spec creation
+  planning: 'high',     // High thinking for planning complex features
+  coding: 'low',        // Faster coding iterations
+  qa: 'low'             // Efficient QA review
 };
 
 // Default agent profiles for preset model/thinking configurations
@@ -70,9 +70,9 @@ export const DEFAULT_AGENT_PROFILES: AgentProfile[] = [
   {
     id: 'auto',
     name: 'Auto (Optimized)',
-    description: 'Uses different models per phase for optimal speed & quality',
-    model: 'sonnet',  // Fallback/default model
-    thinkingLevel: 'medium',
+    description: 'Uses Opus across all phases with optimized thinking levels',
+    model: 'opus',  // Fallback/default model
+    thinkingLevel: 'high',
     icon: 'Sparkles',
     isAutoProfile: true,
     phaseModels: DEFAULT_PHASE_MODELS,