feat(ui): improve modal UX and model management

- Increase dialog max-width to 2xl for better content display
- Add tabbed interface to feature modal (prompt/model/testing)
- Streamline model selection with compact button layout
- Remove unused OpenAI O3/O4 models from registry
- Add model string validation and fallback logic
- Add "Uncategorized" category support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>

app/electron/services/codex-cli-detector.js

@@ -212,10 +212,7 @@ class CodexCliDetector {
       'gpt-5.1-codex-max',
       'gpt-5.1-codex',
       'gpt-5.1-codex-mini',
-      'gpt-5.1',
-      'o3',
-      'o3-mini',
-      'o4-mini'
+      'gpt-5.1'
     ];
     return supportedModels.includes(model);
   }

app/electron/services/feature-executor.js

@@ -36,8 +36,27 @@ class FeatureExecutor {
     const modelKey = feature.model || "opus"; // Default to opus
 
     // Use the registry for model lookup
-    const modelString = ModelRegistry.getModelString(modelKey);
-    return modelString || MODEL_MAP[modelKey] || MODEL_MAP.opus;
+    let modelString = ModelRegistry.getModelString(modelKey);
+    
+    // Fallback to MODEL_MAP if registry doesn't have it
+    if (!modelString || modelString === modelKey) {
+      modelString = MODEL_MAP[modelKey];
+    }
+    
+    // Final fallback to opus
+    if (!modelString) {
+      modelString = MODEL_MAP.opus;
+    }
+    
+    // Validate model string format - ensure it's not incorrectly constructed
+    // Prevent incorrect formats like "claude-haiku-4-20250514" (mixing haiku with sonnet date)
+    if (modelString.includes('haiku') && modelString.includes('20250514')) {
+      console.error(`[FeatureExecutor] Invalid model string detected: ${modelString}, using correct format`);
+      modelString = MODEL_MAP.haiku || 'claude-haiku-4-5';
+    }
+    
+    console.log(`[FeatureExecutor] getModelString: modelKey=${modelKey}, modelString=${modelString}`);
+    return modelString;
   }
 
   /**

app/electron/services/model-provider.js

@@ -265,22 +265,6 @@ class CodexProvider extends ModelProvider {
         provider: 'codex',
         description: 'Broad world knowledge with strong reasoning',
         tier: 'standard'
-      },
-      {
-        id: 'o3',
-        name: 'O3',
-        modelString: 'o3',
-        provider: 'codex',
-        description: 'Advanced reasoning model',
-        tier: 'premium'
-      },
-      {
-        id: 'o3-mini',
-        name: 'O3 Mini',
-        modelString: 'o3-mini',
-        provider: 'codex',
-        description: 'Efficient reasoning model',
-        tier: 'standard'
       }
     ];
   }
@@ -306,12 +290,7 @@ class CodexProvider extends ModelProvider {
       'gpt-5.1-codex-max': 'gpt-5.1-codex-max',
       'gpt-5.1-codex': 'gpt-5.1-codex',
       'gpt-5.1-codex-mini': 'gpt-5.1-codex-mini',
-      'gpt-5.1': 'gpt-5.1',
-      'o3': 'o3',
-      'o3-mini': 'o3-mini',
-      'o4-mini': 'o4-mini',
-      'gpt-4o': 'gpt-4o',
-      'gpt-4o-mini': 'gpt-4o-mini'
+      'gpt-5.1': 'gpt-5.1'
     };
     return modelMap[modelKey] || 'gpt-5.1-codex-max';
   }
@@ -346,8 +325,7 @@ class ModelProviderFactory {
 
     // Check if it's a Codex/OpenAI model
     const codexModels = [
-      'gpt-5.1-codex-max', 'gpt-5.1-codex', 'gpt-5.1-codex-mini', 'gpt-5.1',
-      'o3', 'o3-mini', 'o4-mini', 'gpt-4o', 'gpt-4o-mini'
+      'gpt-5.1-codex-max', 'gpt-5.1-codex', 'gpt-5.1-codex-mini', 'gpt-5.1'
     ];
     if (codexModels.includes(modelId)) {
       return new CodexProvider();

app/electron/services/model-registry.js

@@ -27,12 +27,7 @@ const CODEX_MODEL_IDS = [
   'gpt-5.1-codex-max',
   'gpt-5.1-codex',
   'gpt-5.1-codex-mini',
-  'gpt-5.1',
-  'o3',
-  'o3-mini',
-  'o4-mini',
-  'gpt-4o',
-  'gpt-4o-mini'
+  'gpt-5.1'
 ];
 
 /**
@@ -141,50 +136,6 @@ const MODELS = {
     contextWindow: 128000,
     supportsThinking: false,
     requiresAuth: 'OPENAI_API_KEY'
-  },
-
-  // OpenAI O-Series Models
-  o3: {
-    id: 'o3',
-    name: 'O3',
-    modelString: 'o3',
-    provider: 'codex',
-    category: MODEL_CATEGORIES.OPENAI,
-    tier: MODEL_TIERS.PREMIUM,
-    description: 'Advanced reasoning model',
-    capabilities: ['code', 'text', 'tools', 'reasoning'],
-    maxTokens: 100000,
-    contextWindow: 200000,
-    supportsThinking: false,
-    requiresAuth: 'OPENAI_API_KEY'
-  },
-  'o3-mini': {
-    id: 'o3-mini',
-    name: 'O3 Mini',
-    modelString: 'o3-mini',
-    provider: 'codex',
-    category: MODEL_CATEGORIES.OPENAI,
-    tier: MODEL_TIERS.STANDARD,
-    description: 'Efficient reasoning model',
-    capabilities: ['code', 'text', 'reasoning'],
-    maxTokens: 65536,
-    contextWindow: 128000,
-    supportsThinking: false,
-    requiresAuth: 'OPENAI_API_KEY'
-  },
-  'o4-mini': {
-    id: 'o4-mini',
-    name: 'O4 Mini',
-    modelString: 'o4-mini',
-    provider: 'codex',
-    category: MODEL_CATEGORIES.OPENAI,
-    tier: MODEL_TIERS.BASIC,
-    description: 'Fast reasoning with lower cost',
-    capabilities: ['code', 'text', 'reasoning'],
-    maxTokens: 65536,
-    contextWindow: 128000,
-    supportsThinking: false,
-    requiresAuth: 'OPENAI_API_KEY'
   }
 };