feat: enhanced AI usage logging (model, provider, response) and fixed build blockers

src/app/actions/gemini-vision.ts

@@ -83,7 +83,7 @@ function sleep(ms: number): Promise<void> {
  * Analyze whisky label with OpenRouter (Gemma 3 27B)
  * Includes retry logic for 429 rate limit errors
  */
-async function analyzeWithOpenRouter(base64Data: string, mimeType: string): Promise<{ data: any; apiTime: number }> {
+async function analyzeWithOpenRouter(base64Data: string, mimeType: string): Promise<{ data: any; apiTime: number; responseText: string }> {
     const client = getOpenRouterClient();
     const startApi = performance.now();
     const maxRetries = 3;
@@ -129,6 +129,7 @@ async function analyzeWithOpenRouter(base64Data: string, mimeType: string): Prom
             return {
                 data: JSON.parse(jsonStr),
                 apiTime: endApi - startApi,
+                responseText: content
             };
 
         } catch (error: any) {
@@ -155,7 +156,7 @@ async function analyzeWithOpenRouter(base64Data: string, mimeType: string): Prom
 /**
  * Analyze whisky label with Gemini
  */
-async function analyzeWithGemini(base64Data: string, mimeType: string): Promise<{ data: any; apiTime: number }> {
+async function analyzeWithGemini(base64Data: string, mimeType: string): Promise<{ data: any; apiTime: number; responseText: string }> {
     const genAI = new GoogleGenerativeAI(process.env.GEMINI_API_KEY!);
     const model = genAI.getGenerativeModel({
         model: 'gemini-2.5-flash',
@@ -179,9 +180,11 @@ async function analyzeWithGemini(base64Data: string, mimeType: string): Promise<
     ]);
     const endApi = performance.now();
 
+    const responseText = result.response.text();
     return {
-        data: JSON.parse(result.response.text()),
+        data: JSON.parse(responseText),
         apiTime: endApi - startApi,
+        responseText: responseText
     };
 }
 
@@ -243,7 +246,7 @@ export async function analyzeLabelWithGemini(imageBase64: string): Promise<Gemin
 
         // Call appropriate provider
         console.log(`[Vision] Using provider: ${provider}`);
-        let result: { data: any; apiTime: number };
+        let result: { data: any; apiTime: number; responseText: string };
 
         if (provider === 'openrouter') {
             result = await analyzeWithOpenRouter(base64Data, mimeType);
@@ -278,7 +281,10 @@ export async function analyzeLabelWithGemini(imageBase64: string): Promise<Gemin
             userId: user.id,
             apiType: 'gemini_ai', // Keep same type for tracking
             endpoint: `analyzeLabelWith${provider === 'openrouter' ? 'OpenRouter' : 'Gemini'}`,
-            success: true
+            success: true,
+            provider: provider,
+            model: provider === 'openrouter' ? OPENROUTER_VISION_MODEL : 'gemini-2.5-flash',
+            responseText: result.responseText
         });
         await deductCredits(user.id, 'gemini_ai', `Vision label analysis (${provider})`);