fix: auto-detect Google Gemini API keys to prevent OpenRouter routing mismatch

When a user configures a Gemini API key but their stored profile has
provider='openrouter', requests were incorrectly routed to OpenRouter
causing 401 "User not found" errors. Added auto-detection for Google
API keys (AIza prefix) in both wizard and chat request paths, matching
the existing pattern for Anthropic and OpenAI keys.

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

Author: grantiguess

src/components/panel/views/LeftAIView.jsx

@@ -3402,6 +3402,9 @@ const LeftAIView = ({ compact = false,
         effectiveProvider = 'anthropic';
       } else if (apiKey?.startsWith('sk-proj-') && (!effectiveProvider || effectiveProvider === 'openrouter')) {
         effectiveProvider = 'openai';
+      } else if (apiKey?.startsWith('AIza') && (!effectiveProvider || effectiveProvider === 'openrouter')) {
+        console.warn('[LeftAIView] Detected Google API key with OpenRouter config. Auto-switching to Google.');
+        effectiveProvider = 'google';
       }
 
       // Collect any tabular data from attachments for tool access
@@ -3665,6 +3668,12 @@ const LeftAIView = ({ compact = false,
       if (!apiConfig) { addMessage('ai', 'Please set up your API key first by clicking the key icon in the header.', {}, targetConversationId); return; }
       const apiKey = await apiKeyManager.getAPIKey();
       if (!apiKey) { addMessage('ai', 'No API key found. Please set one via the key icon.', {}, targetConversationId); return; }
+      // Auto-correct provider if key mismatches
+      let chatProvider = apiConfig?.provider;
+      if (apiKey?.startsWith('sk-ant-') && (!chatProvider || chatProvider === 'openrouter')) chatProvider = 'anthropic';
+      else if (apiKey?.startsWith('sk-proj-') && (!chatProvider || chatProvider === 'openrouter')) chatProvider = 'openai';
+      else if (apiKey?.startsWith('AIza') && (!chatProvider || chatProvider === 'openrouter')) chatProvider = 'google';
+
       const response = await bridgeFetch('/api/ai/chat', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json', 'Authorization': `Bearer ${apiKey}` },
@@ -3675,7 +3684,7 @@ const LeftAIView = ({ compact = false,
             activeGraphId: activeGraphId || null,
             graphInfo,
             graphCount,
-            apiConfig: apiConfig ? { provider: apiConfig.provider, endpoint: apiConfig.endpoint, model: apiConfig.model, settings: apiConfig.settings } : null
+            apiConfig: apiConfig ? { provider: chatProvider || apiConfig.provider, endpoint: apiConfig.endpoint, model: apiConfig.model, settings: apiConfig.settings } : null
           },
           model: apiConfig?.model || undefined
         })

wizard-server.js

@@ -165,9 +165,10 @@ app.post('/api/wizard', async (req, res) => {
       : `[multimodal: ${message.length} blocks]`;
     console.log('[Wizard] Request:', {
       messagePreview,
+      provider: llmConfig.provider,
+      model: llmConfig.model,
       historyLength: conversationHistory?.length || 0,
-      activeGraph: graphState?.activeGraphId,
-      model: llmConfig.model
+      activeGraph: graphState?.activeGraphId
     });
 
     const abortController = new AbortController();