fix:文明

server/alembic/README.md

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+# Alembic（数据库迁移）
+
+## 1. 前置
+
+- 在 `server/` 下准备 `.env.dev`（或系统环境变量），至少包含：
+  - `DATABASE_URL=mysql+aiomysql://...`
+
+> 注意：本仓库推荐使用 Python 虚拟环境（venv）。示例以 `server/.venv` 为准。
+
+---
+
+## 2. 安装依赖（一次性）
+
+在仓库根目录：
+
+```bash
+python3 -m venv server/.venv
+source server/.venv/bin/activate
+pip install -r server/requirements.txt
+```
+
+---
+
+## 3. 常用命令
+
+在 `server/` 目录运行：
+
+```bash
+source .venv/bin/activate
+alembic -c alembic.ini history
+alembic -c alembic.ini upgrade head
+```
+
+---
+
+## 4. 说明
+
+- 连接串由 `alembic/env.py` 从环境变量 `DATABASE_URL`（或 `app/core/config.py`）读取。
+- 初始迁移版本为：`0001_init_content_tables`（创建推荐系统最小内容表与画像表）。
+

server/alembic/env.py

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+from __future__ import annotations
+
+import asyncio
+import os
+import sys
+from logging.config import fileConfig
+from pathlib import Path
+
+from alembic import context
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+# 让 alembic 在 `server/` 下运行时也能 import app.*
+SERVER_DIR = Path(__file__).resolve().parents[1]  # .../server/alembic -> .../server
+sys.path.append(str(SERVER_DIR))
+
+from app.db.base import Base  # noqa: E402
+import app.db.models  # noqa: F401,E402  # 确保模型被导入，metadata 完整
+
+# Alembic Config 对象
+config = context.config
+
+# 配置日志
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# 目标 metadata（autogenerate 依赖）
+target_metadata = Base.metadata
+
+
+def _read_env_kv(env_path: Path) -> dict[str, str]:
+    """
+    读取 .env 文件中的 KEY=VALUE。
+
+    说明：
+    - 迁移阶段只需要 DATABASE_URL，不应因为 Redis/Celery 等配置缺失而失败
+    - 这里不依赖 pydantic-settings 的 Settings 校验，避免“缺字段导致迁移不可用”
+    """
+
+    data: dict[str, str] = {}
+    if not env_path.exists():
+        return data
+    for raw in env_path.read_text(encoding="utf-8").splitlines():
+        line = raw.strip()
+        if not line or line.startswith("#"):
+            continue
+        if "=" not in line:
+            continue
+        k, v = line.split("=", 1)
+        k = k.strip()
+        v = v.strip().strip('"').strip("'")
+        if k:
+            data[k] = v
+    return data
+
+
+def _get_database_url() -> str:
+    """
+    获取数据库连接串。
+
+    约定：
+    - 优先读取环境变量 `DATABASE_URL`
+    - 若未设置，则按 `APP_ENV`（默认 dev）读取 `server/.env.dev` 或 `server/.env.prod`
+
+    注意：迁移阶段仅依赖 DATABASE_URL；不应强制要求 REDIS_URL / CELERY_BROKER_URL 等配置存在。
+    """
+
+    # 允许在 alembic 命令时临时覆盖
+    env_url = os.getenv("DATABASE_URL")
+    if env_url:
+        return env_url
+
+    app_env = (os.getenv("APP_ENV") or "dev").strip() or "dev"
+    env_file = SERVER_DIR / (".env.prod" if app_env == "prod" else ".env.dev")
+    kv = _read_env_kv(env_file)
+    url = kv.get("DATABASE_URL")
+    if url:
+        return url
+
+    raise RuntimeError(
+        "缺少 DATABASE_URL：请设置环境变量 DATABASE_URL，或在 server/.env.dev（或 .env.prod）中配置 DATABASE_URL。"
+    )
+
+
+def run_migrations_offline() -> None:
+    """离线模式：生成 SQL 脚本，不连接数据库。"""
+
+    url = _get_database_url()
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+        compare_type=True,
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection: Connection) -> None:
+    """在线模式：在已有连接上执行迁移。"""
+
+    context.configure(
+        connection=connection,
+        target_metadata=target_metadata,
+        compare_type=True,
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_migrations_online() -> None:
+    """在线模式：使用异步引擎执行迁移。"""
+
+    url = _get_database_url()
+    config.set_main_option("sqlalchemy.url", url)
+
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section) or {},
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+    await connectable.dispose()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    asyncio.run(run_migrations_online())
+

server/alembic/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}
+

server/alembic/versions/0001_init_content_tables.py

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+"""init content tables
+
+Revision ID: 0001_init_content_tables
+Revises:
+Create Date: 2026-02-01
+
+"""
+
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+
+# revision identifiers, used by Alembic.
+revision = "0001_init_content_tables"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "contents",
+        sa.Column(
+            "content_id",
+            mysql.BIGINT(unsigned=True),
+            primary_key=True,
+            autoincrement=True,
+            comment="文案唯一 ID（自增；文案微调时保持不变）",
+        ),
+        sa.Column("text_en", sa.Text(), nullable=True, comment="英文文案（可空；若为空则必须提供 text_tc）"),
+        sa.Column("text_tc", sa.Text(), nullable=True, comment="繁体中文文案（可空；若为空则必须提供 text_en）"),
+        sa.Column("author_id", sa.String(length=255), nullable=True, comment="作者/来源 ID（可空；用于多样性与频控）"),
+        sa.Column("template_id", sa.String(length=255), nullable=True, comment="模板 ID（可空；用于多样性与频控）"),
+        sa.Column("created_at", sa.DateTime(), server_default=sa.func.now(), nullable=False, comment="创建时间"),
+        sa.Column("updated_at", sa.DateTime(), server_default=sa.func.now(), nullable=False, comment="更新时间"),
+        sa.CheckConstraint(
+            "(text_en IS NOT NULL) OR (text_tc IS NOT NULL)",
+            name="chk_contents_text_present",
+        ),
+        mysql_charset="utf8mb4",
+    )
+    op.create_index("idx_contents_author_id", "contents", ["author_id"], unique=False)
+    op.create_index("idx_contents_template_id", "contents", ["template_id"], unique=False)
+
+    op.create_table(
+        "content_profiles",
+        sa.Column(
+            "content_id",
+            mysql.BIGINT(unsigned=True),
+            sa.ForeignKey("contents.content_id", ondelete="CASCADE"),
+            primary_key=True,
+            comment="FK -> contents.content_id",
+        ),
+        sa.Column(
+            "stage",
+            sa.Enum("general", "expecting", "parenting", "unknown", name="content_stage"),
+            server_default="general",
+            nullable=False,
+            comment="母职阶段定位（general/expecting/parenting/unknown）",
+        ),
+        sa.Column("emotion_score", sa.Numeric(3, 2), nullable=True, comment="情绪调性 0~1；NULL 表示 general"),
+        sa.Column(
+            "context_suitability_json",
+            sa.JSON(),
+            nullable=False,
+            comment="各 context 的适配度（JSON：0/0.5/1；必须包含 5 个 key）",
+        ),
+        sa.Column(
+            "need_suitability_json",
+            sa.JSON(),
+            nullable=False,
+            comment="各 need 的适配度（JSON：0/0.5/1；必须包含 5 个 key）",
+        ),
+        sa.Column(
+            "personalization_power",
+            sa.SmallInteger(),
+            server_default="0",
+            nullable=False,
+            comment="个性化力度（约定只允许 0/5/10，分别映射 0/0.5/1）",
+        ),
+        sa.Column(
+            "review_confidence",
+            sa.Numeric(3, 2),
+            nullable=True,
+            comment="标注置信度 0~1；NULL 表示由推荐侧按 0.7 兜底",
+        ),
+        sa.Column(
+            "is_safe_pool",
+            sa.Boolean(),
+            server_default=sa.text("0"),
+            nullable=False,
+            comment="是否属于通用安全池（L3 兜底）",
+        ),
+        sa.Column("updated_at", sa.DateTime(), server_default=sa.func.now(), nullable=False, comment="画像更新时间"),
+        mysql_charset="utf8mb4",
+    )
+    op.create_index("idx_profiles_is_safe_pool", "content_profiles", ["is_safe_pool"], unique=False)
+    op.create_index("idx_profiles_personalization_power", "content_profiles", ["personalization_power"], unique=False)
+    op.create_index("idx_profiles_stage", "content_profiles", ["stage"], unique=False)
+
+    op.create_table(
+        "content_risk_flags",
+        sa.Column(
+            "id",
+            mysql.BIGINT(unsigned=True),
+            primary_key=True,
+            autoincrement=True,
+            comment="主键",
+        ),
+        sa.Column(
+            "content_id",
+            mysql.BIGINT(unsigned=True),
+            sa.ForeignKey("contents.content_id", ondelete="CASCADE"),
+            nullable=False,
+            comment="FK -> contents.content_id",
+        ),
+        sa.Column(
+            "flag",
+            sa.String(length=64),
+            nullable=False,
+            comment="风险标记（unsafe_for_* / block_* / soft_*）",
+        ),
+        sa.Column("created_at", sa.DateTime(), server_default=sa.func.now(), nullable=False, comment="创建时间"),
+        sa.UniqueConstraint("content_id", "flag", name="uniq_content_flag"),
+        mysql_charset="utf8mb4",
+    )
+    op.create_index("idx_content_id", "content_risk_flags", ["content_id"], unique=False)
+    op.create_index("idx_flag", "content_risk_flags", ["flag"], unique=False)
+
+
+def downgrade() -> None:
+    op.drop_index("idx_flag", table_name="content_risk_flags")
+    op.drop_index("idx_content_id", table_name="content_risk_flags")
+    op.drop_table("content_risk_flags")
+
+    op.drop_index("idx_profiles_stage", table_name="content_profiles")
+    op.drop_index("idx_profiles_personalization_power", table_name="content_profiles")
+    op.drop_index("idx_profiles_is_safe_pool", table_name="content_profiles")
+    op.drop_table("content_profiles")
+
+    op.drop_index("idx_contents_template_id", table_name="contents")
+    op.drop_index("idx_contents_author_id", table_name="contents")
+    op.drop_table("contents")
+