feat: add Minimax Speech as alternative TTS provider for Reels

- Add minimax_config table (migration + schema + storage CRUD)
- Add GET/POST /api/minimax/config routes
- Pass tts_provider + minimax_api_key through ffmpeg service
- Add generate_tts_minimax() in Python using Minimax T2A v2 API
- Fall back to ffsubsync for subtitle sync (no WordBoundary events)
- Add Minimax config card in Settings page
- Add provider toggle (Edge TTS / Minimax) + French voices in new-reel

server/storage.ts

@@ -39,6 +39,9 @@ import {
   type InsertAudioTrack,
   appConfig,
   type AppConfig,
+  minimaxConfig,
+  type MinimaxConfig,
+  type InsertMinimaxConfig,
 } from "@shared/schema";
 import { db } from "./db";
 import { eq, and, gte, lte, desc, asc, isNull, inArray } from "drizzle-orm";
@@ -609,6 +612,24 @@ export class DatabaseStorage implements IStorage {
     const [created] = await db.insert(appConfig).values(data).returning();
     return created;
   }
+  // Minimax Config
+  async getMinimaxConfig(userId: string): Promise<MinimaxConfig | undefined> {
+    const [config] = await db.select().from(minimaxConfig).where(eq(minimaxConfig.userId, userId));
+    return config || undefined;
+  }
+
+  async createMinimaxConfig(config: InsertMinimaxConfig): Promise<MinimaxConfig> {
+    const [newConfig] = await db.insert(minimaxConfig).values(config).returning();
+    return newConfig;
+  }
+
+  async updateMinimaxConfig(userId: string, config: Partial<InsertMinimaxConfig>): Promise<MinimaxConfig> {
+    const [updated] = await db.update(minimaxConfig)
+      .set({ ...config, updatedAt: new Date() })
+      .where(eq(minimaxConfig.userId, userId))
+      .returning();
+    return updated;
+  }
 }
 
 export const storage = new DatabaseStorage();