Initial commit: AI Video Assistant fullstack platform.

Add pipecat-based backend with WebRTC/WS voice routes, Next.js frontend, and Docker Compose orchestration.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/config.py

@@ -0,0 +1,43 @@
+"""集中读取环境变量。所有 provider 的接入点都在这里,改栈只改 .env。"""
+
+import os
+
+from dotenv import load_dotenv
+
+load_dotenv()
+
+
+def _split(value: str) -> list[str]:
+    return [item.strip() for item in value.split(",") if item.strip()]
+
+
+# ---- LLM(DeepSeek 等,OpenAI 兼容) ----
+LLM_BASE_URL = os.getenv("LLM_BASE_URL", "https://api.deepseek.com/v1")
+LLM_API_KEY = os.getenv("LLM_API_KEY", "")
+LLM_MODEL = os.getenv("LLM_MODEL", "deepseek-chat")
+
+# ---- STT(SenseVoice / FunASR,OpenAI 兼容) ----
+STT_BASE_URL = os.getenv("STT_BASE_URL", "http://localhost:8001/v1")
+STT_API_KEY = os.getenv("STT_API_KEY", "local")
+STT_MODEL = os.getenv("STT_MODEL", "sensevoice")
+
+# ---- TTS(CosyVoice,OpenAI 兼容) ----
+TTS_BASE_URL = os.getenv("TTS_BASE_URL", "http://localhost:8002/v1")
+TTS_API_KEY = os.getenv("TTS_API_KEY", "local")
+TTS_MODEL = os.getenv("TTS_MODEL", "cosyvoice")
+TTS_VOICE = os.getenv("TTS_VOICE", "中文女")
+
+# ---- Realtime(可选) ----
+REALTIME_API_KEY = os.getenv("REALTIME_API_KEY", "")
+REALTIME_MODEL = os.getenv("REALTIME_MODEL", "gpt-realtime")
+
+# ---- 数据库(Postgres) ----
+DATABASE_URL = os.getenv(
+    "DATABASE_URL",
+    "postgresql+asyncpg://postgres:postgres@localhost:5432/postgres",
+)
+
+# ---- 服务 ----
+HOST = os.getenv("HOST", "0.0.0.0")
+PORT = int(os.getenv("PORT", "8000"))
+CORS_ORIGINS = _split(os.getenv("CORS_ORIGINS", "http://localhost:3000"))