feat: implement AI custom tag proposals

- AI now suggests dominant notes not in the system list (Part 3: Custom Suggestions)
- Updated TagSelector to show 'Neu anlegen?' buttons for AI-proposed custom tags
- Added suggested_custom_tags to bottles table and metadata schema
- Updated TastingNoteForm to handle both system and custom AI suggestions

src/services/analyze-bottle.ts

@@ -8,7 +8,7 @@ import { createHash } from 'crypto';
 import { trackApiUsage } from './track-api-usage';
 import { checkCreditBalance, deductCredits } from './credit-service';
 
-export async function analyzeBottle(base64Image: string): Promise<AnalysisResponse> {
+export async function analyzeBottle(base64Image: string, tags?: string[]): Promise<AnalysisResponse> {
     const supabase = createServerActionClient({ cookies });
 
     if (!process.env.GEMINI_API_KEY) {
@@ -16,7 +16,7 @@ export async function analyzeBottle(base64Image: string): Promise<AnalysisRespon
     }
 
     try {
-        // Ensure user is authenticated for tracking/billing
+        // ... (auth and credit check remain same) ...
         const { data: { session } } = await supabase.auth.getSession();
         if (!session || !session.user) {
             return { success: false, error: 'Nicht autorisiert oder Session abgelaufen.' };
@@ -24,7 +24,6 @@ export async function analyzeBottle(base64Image: string): Promise<AnalysisRespon
 
         const userId = session.user.id;
 
-        // Check credit balance before making API call
         const creditCheck = await checkCreditBalance(userId, 'gemini_ai');
         if (!creditCheck.allowed) {
             return {
@@ -33,12 +32,9 @@ export async function analyzeBottle(base64Image: string): Promise<AnalysisRespon
             };
         }
 
-        // 1. Generate Hash for Caching
         const base64Data = base64Image.split(',')[1] || base64Image;
         const imageHash = createHash('sha256').update(base64Data).digest('hex');
-        console.log(`[AI Cache] Checking hash: ${imageHash}`);
 
-        // 2. Check Cache
         const { data: cachedResult } = await supabase
             .from('vision_cache')
             .select('result')
@@ -46,16 +42,14 @@ export async function analyzeBottle(base64Image: string): Promise<AnalysisRespon
             .maybeSingle();
 
         if (cachedResult) {
-            console.log(`[AI Cache] Hit! hash: ${imageHash}`);
             return {
                 success: true,
                 data: cachedResult.result as any,
             };
         }
 
-        console.log(`[AI Cache] Miss. Calling Gemini...`);
+        const instruction = SYSTEM_INSTRUCTION.replace('{AVAILABLE_TAGS}', tags ? tags.join(', ') : 'No tags available');
 
-        // 3. AI Analysis
         const result = await geminiModel.generateContent([
             {
                 inlineData: {
@@ -63,7 +57,7 @@ export async function analyzeBottle(base64Image: string): Promise<AnalysisRespon
                     mimeType: 'image/jpeg',
                 },
             },
-            { text: SYSTEM_INSTRUCTION },
+            { text: instruction },
         ]);
 
         const responseText = result.response.text();