feat: initial MVP - FastAPI backend + Vue3 frontend + docker-compose

- backend: FastAPI + SQLAlchemy 2.0(async) + asyncpg + Alembic
- 7 API routes: auth/me/articles/sources/bookmarks/subscriptions/admin
- models: User/Source/Article/Bookmark/Subscription/ApiToken
- services: RSS fetcher (feedparser) + Tencent TMT translator with quota + cache + local NLLB fallback
- workers: APScheduler + asyncio pipeline (fetch -> dedupe -> insert -> translate)
- seed scripts: create_user, seed_sources (5 RSS: Reuters/BBC/Al Jazeera/NHK/DW)
- frontend: Vue 3 + Vite + Naive UI + Pinia + vue-router
- pages: Login, Feed (24h), ArticleDetail, Sources, Bookmarks, AdminSources
- deploy: docker-compose (postgres/redis/api/worker/frontend/caddy)
- docs: README, DEPLOY, architecture, acceptance

backend/app/models/source.py

@@ -0,0 +1,64 @@
+"""采集源模型。"""
+from __future__ import annotations
+
+import enum
+from datetime import datetime
+
+from sqlalchemy import (
+    JSON,
+    Boolean,
+    DateTime,
+    Enum,
+    Integer,
+    String,
+    Text,
+    func,
+)
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.database import Base
+
+
+class SourceKind(str, enum.Enum):
+    RSS = "rss"
+    HTML_LIST = "html_list"
+    TG_CHANNEL = "tg_channel"
+
+
+class Source(Base):
+    __tablename__ = "sources"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    name: Mapped[str] = mapped_column(String(128), nullable=False)
+    slug: Mapped[str] = mapped_column(String(128), unique=True, index=True, nullable=False)
+    kind: Mapped[SourceKind] = mapped_column(
+        Enum(SourceKind, name="source_kind"),
+        default=SourceKind.RSS,
+        nullable=False,
+    )
+    url: Mapped[str] = mapped_column(Text, nullable=False)
+    detail_selector: Mapped[dict | None] = mapped_column(JSON)
+    fetch_interval_min: Mapped[int] = mapped_column(Integer, default=60, nullable=False)
+    fetch_cron: Mapped[str | None] = mapped_column(String(64))  # 5 段 cron
+    translate_to: Mapped[str] = mapped_column(String(8), default="zh", nullable=False)
+    enabled: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    region: Mapped[str | None] = mapped_column(String(32), index=True)
+    language_src: Mapped[str | None] = mapped_column(String(8))
+    priority: Mapped[int] = mapped_column(Integer, default=50, nullable=False, index=True)
+    headers_json: Mapped[dict | None] = mapped_column(JSON)
+    last_fetched_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    last_status: Mapped[str | None] = mapped_column(String(64))
+    consecutive_failures: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), nullable=False
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False
+    )
+
+    articles: Mapped[list["Article"]] = relationship(  # noqa: F821
+        back_populates="source", cascade="all, delete-orphan", lazy="noload"
+    )
+
+    def __repr__(self) -> str:
+        return f"<Source id={self.id} slug={self.slug} kind={self.kind.value}>"