feat(transcription): add meeting assistant micro-service v0.1.0

- Added FastAPI backend with FFmpeg and Gemini 2.0 integration
- Added React frontend with upload and meeting list
- Integrated into main docker-compose stack and dashboard

transcription-tool/backend/config.py

@@ -0,0 +1,27 @@
+import os
+from pydantic_settings import BaseSettings
+from typing import Optional
+
+class Settings(BaseSettings):
+    APP_NAME: str = "Transcription Engine"
+    VERSION: str = "0.1.0"
+    DATABASE_URL: str = "sqlite:////app/transcripts.db"
+    UPLOAD_DIR: str = "/app/uploads_audio"
+    GEMINI_API_KEY: Optional[str] = None
+    CHUNK_DURATION_SEC: int = 1800  # 30 Minutes
+
+    class Config:
+        env_file = ".env"
+
+settings = Settings()
+
+# Auto-load API Key
+if not settings.GEMINI_API_KEY:
+    key_path = "/app/gemini_api_key.txt"
+    if os.path.exists(key_path):
+        with open(key_path, "r") as f:
+            settings.GEMINI_API_KEY = f.read().strip()
+
+# Ensure Upload Dir exists
+os.makedirs(settings.UPLOAD_DIR, exist_ok=True)
+os.makedirs(os.path.join(settings.UPLOAD_DIR, "chunks"), exist_ok=True)