feat(minimax): add Group ID support to fix rate limit quota

Pass GroupId query param to Minimax T2A v2 API — required for paid
plan quota allocation. Without it, Minimax defaults to (0/0 used).

- shared/schema.ts: groupId field on minimaxConfig table
- server/migrate.ts: ADD COLUMN IF NOT EXISTS group_id
- server/routes/reels.ts: fetch and pass groupId alongside apiKey
- server/services/ffmpeg.ts: minimax_group_id in request interface/body
- ffmpeg-service/main.py: GroupId in URL, threaded through all call sites
- client/src/pages/settings.tsx: Group ID input in Minimax settings card

server/services/ffmpeg.ts

@@ -15,6 +15,7 @@ interface FFmpegReelRequest {
     tts_voice?: string;         // Voix TTS (ex: fr-FR-VivienneNeural)
     tts_provider?: string;      // Provider TTS: "edge_tts" (défaut) ou "minimax"
     minimax_api_key?: string;   // Clé API Minimax (requis si tts_provider=minimax)
+    minimax_group_id?: string;  // Group ID Minimax (requis pour quotas corrects)
     word_duration?: number;     // Durée par mot (default: 0.6s)
     font_size?: number;         // Taille police (default: 24)
     music_volume?: number;      // Volume musique (default: 0.25)
@@ -76,6 +77,7 @@ export class FFmpegService {
             ttsVoice?: string;
             ttsProvider?: string;
             minimaxApiKey?: string;
+            minimaxGroupId?: string;
             wordDuration?: number;
             fontSize?: number;
             musicVolume?: number;
@@ -97,6 +99,7 @@ export class FFmpegService {
             tts_voice: options.ttsVoice,
             tts_provider: options.ttsProvider,
             minimax_api_key: options.minimaxApiKey,
+            minimax_group_id: options.minimaxGroupId,
             word_duration: options.wordDuration ?? 0.6,
             font_size: options.fontSize ?? 64,
             music_volume: options.musicVolume ?? 0.25,
@@ -181,6 +184,7 @@ export class FFmpegService {
             ttsVoice?: string;
             ttsProvider?: string;
             minimaxApiKey?: string;
+            minimaxGroupId?: string;
             wordDuration?: number;
             fontSize?: number;
             musicVolume?: number;
@@ -202,6 +206,7 @@ export class FFmpegService {
             tts_voice: options.ttsVoice,
             tts_provider: options.ttsProvider,
             minimax_api_key: options.minimaxApiKey,
+            minimax_group_id: options.minimaxGroupId,
             word_duration: options.wordDuration ?? 0.6,
             font_size: options.fontSize ?? 64,
             music_volume: options.musicVolume ?? 0.25,
@@ -304,7 +309,8 @@ export class FFmpegService {
         text: string,
         voice: string,
         ttsProvider?: string,
-        minimaxApiKey?: string
+        minimaxApiKey?: string,
+        minimaxGroupId?: string
     ): Promise<{ success: boolean; audioBase64?: string; error?: string }> {
         const config = this.ensureConfigured();
 
@@ -320,6 +326,7 @@ export class FFmpegService {
                     tts_voice: voice,
                     tts_provider: ttsProvider,
                     minimax_api_key: minimaxApiKey,
+                    minimax_group_id: minimaxGroupId,
                 }),
             });