Рабочий пайплайн: YouTube -> транскрипция -> выжимка -> Postgres

- новый api/: /pipeline/process (yt-dlp, субтитры или Vosk, LLM/экстрактивная
  суммаризация), /videos, /llm; старый код перенесён в api_legacy/
- web/: Flet UI (flet 0.28.3 + flet-web, порт 8550)
- Dockerfile.api: ffmpeg слоем из mwader/static-ffmpeg, pip с кэш-маунтом
- requirements/pyproject: убраны moviepy, imageio-ffmpeg, битый asyncio
- README с инструкцией запуска и загрузкой Vosk-модели

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

api/config.py

@@ -1,28 +1,38 @@
-from pydantic_settings import BaseSettings
 import os
+from pydantic_settings import BaseSettings
 
-def _env(*names, default=None):
-    for n in names:
-        v = os.getenv(n)
-        if v:
-            return v
-    return default
 
 class Settings(BaseSettings):
-    # support both custom DB_* names and common POSTGRES_* names from postgres images
-    DB_USER: str = _env("DB_USER", "POSTGRES_USER", default="postgres")
-    DB_PASS: str = _env("DB_PASS", "POSTGRES_PASSWORD", default="postgres")
-    DB_NAME: str = _env("DB_NAME", "POSTGRES_DB", default="test_db")
-    DB_HOST: str = _env("DB_HOST", "POSTGRES_HOST", "DB_HOST", default="db")
-    DB_PORT: str = _env("DB_PORT", "POSTGRES_PORT", default="5432")
+    DB_USER: str = os.getenv("DB_USER", "postgres")
+    DB_PASS: str = os.getenv("DB_PASS", "postgres")
+    DB_NAME: str = os.getenv("DB_NAME", "test_db")
+    DB_HOST: str = os.getenv("DB_HOST", "db")
+    DB_PORT: str = os.getenv("DB_PORT", "5432")
 
-    # If explicit DB_* variables are provided, build DATABASE_URL from them (priority).
-    # Otherwise fall back to explicit DATABASE_URL or DATABASE_URL_ASYNC env.
-    _built_db_url: str | None = None
-    if DB_USER and DB_PASS and DB_NAME and DB_HOST and DB_PORT:
-        _built_db_url = f"postgresql+asyncpg://{DB_USER}:{DB_PASS}@{DB_HOST}:{DB_PORT}/{DB_NAME}"
+    DEFAULT_VOSK_MODEL: str = os.getenv(
+        "DEFAULT_VOSK_MODEL", "models/vosk-model-small-ru-0.22"
+    )
+    SUBTITLE_LANGS: str = os.getenv("SUBTITLE_LANGS", "ru,en")
 
-    DATABASE_URL: str = _built_db_url or _env("DATABASE_URL", "DATABASE_URL_ASYNC", default="")
+    # External LLM (OpenAI-compatible). The LLM itself is NOT hosted in this container —
+    # point at any provider/proxy/local server that speaks /v1/chat/completions.
+    LLM_BASE_URL: str = os.getenv("LLM_BASE_URL", "")
+    LLM_API_KEY: str = os.getenv("LLM_API_KEY", "")
+    LLM_MODEL: str = os.getenv("LLM_MODEL", "")
+    LLM_TIMEOUT: int = int(os.getenv("LLM_TIMEOUT", "120"))
+    LLM_MAX_TOKENS: int = int(os.getenv("LLM_MAX_TOKENS", "1000"))
+    LLM_TEMPERATURE: float = float(os.getenv("LLM_TEMPERATURE", "0.3"))
+
+    @property
+    def database_url(self) -> str:
+        return (
+            f"postgresql+asyncpg://{self.DB_USER}:{self.DB_PASS}"
+            f"@{self.DB_HOST}:{self.DB_PORT}/{self.DB_NAME}"
+        )
+
+    @property
+    def subtitle_langs_list(self) -> list[str]:
+        return [x.strip() for x in self.SUBTITLE_LANGS.split(",") if x.strip()]
 
 
 settings = Settings()