Initial commit: Børnetime app scaffold

FastAPI + Celery + Svelte app for English→Danish video translation
with voice cloning. Includes diarization, STT, translation, TTS,
and audio mixing pipeline.

backend/app/config.py

@@ -0,0 +1,34 @@
+from pydantic_settings import BaseSettings
+from typing import Optional
+
+
+class Settings(BaseSettings):
+    video_dir: str = "/data/videos"
+    app_data_dir: str = "/data/app"
+    database_url: str = "sqlite+aiosqlite:////data/app/bornetime.db"
+
+    redis_url: str = "redis://redis:6379/0"
+
+    stt_model_id: str = "bosonai/higgs-audio-v3-stt"
+    stt_device: str = "cuda:0"
+    stt_dtype: str = "bfloat16"
+
+    translate_model_path: str = "/models/translategemma-12b-q8_0.gguf"
+    translate_n_gpu_layers: int = -1
+    translate_device: str = "cuda:0"
+
+    tts_model_id: str = "bosonai/higgs-tts-3-4b"
+    tts_device: str = "cuda:1"
+
+    diarization_model: str = "pyannote/speaker-diarization-3.1"
+    diarization_device: str = "cuda:0"
+
+    hf_token: Optional[str] = None
+    temp_dir: str = "/data/app/tmp"
+
+    class Config:
+        env_file = ".env"
+        env_file_encoding = "utf-8"
+
+
+settings = Settings()