docs: add bug fix design for TRIGGER-001 and TOKEN-001
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# Bug Fix Design: TRIGGER-001 & TOKEN-001
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**Date:** 2026-03-02
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**Author:** AI Assistant
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**Status:** Approved
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## Overview
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解决 `docs/bugs/backlog.md` 中的两个 bug:
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1. TRIGGER-001: user_agents 自动创建
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2. TOKEN-001: Flutter 硬编码颜色迁移
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## TRIGGER-001: user_agents 自动创建
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### Problem
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新用户注册时,`user_agents` 表未自动创建默认 Agent 配置记录,导致首次使用 Agent Chat 功能失败。
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### Solution
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创建配置驱动的自动初始化机制:
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- YAML 配置文件定义默认 agent 配置
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- 数据库 catalog 表存储配置(持久化)
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- Trigger 从 catalog 表读取并批量插入
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- 应用启动时自动同步 YAML → catalog 表
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### Architecture
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```
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user_agent_catalog.yaml
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↓ (应用启动时)
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initialize_user_agent_catalog()
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↓ (upsert)
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user_agent_catalog 表
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↓ (Trigger 查询)
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新用户注册 → create_profile_for_new_user()
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├─→ 插入 profiles
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└─→ 批量插入 user_agents (3条)
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```
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### Data Model
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#### 1. user_agent_catalog.yaml
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```yaml
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agents:
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- agent_type: INTENT_RECOGNITION
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llm_model_code: qwen3.5-flash
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status: active
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config:
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temperature: 0.7
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- agent_type: TASK_EXECUTION
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llm_model_code: deepseek-v3.2
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status: active
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config:
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temperature: 0.7
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- agent_type: RESULT_REPORTING
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llm_model_code: deepseek-v3.2
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status: active
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config:
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temperature: 0.7
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```
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#### 2. user_agent_catalog 表
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```sql
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CREATE TABLE user_agent_catalog (
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agent_type VARCHAR(20) PRIMARY KEY,
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llm_id UUID NOT NULL REFERENCES llms(id) ON DELETE RESTRICT,
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status VARCHAR(20) NOT NULL DEFAULT 'active',
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config JSONB NOT NULL DEFAULT '{}',
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created_at TIMESTAMPTZ DEFAULT now(),
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updated_at TIMESTAMPTZ DEFAULT now(),
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CONSTRAINT chk_status CHECK (status IN ('active', 'paused', 'migrating'))
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);
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```
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**字段说明:**
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- `agent_type`: 主键,agent 类型(INTENT_RECOGNITION / TASK_EXECUTION / RESULT_REPORTING)
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- `llm_id`: 外键,关联 llms 表
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- `status`: 默认状态(active / paused / migrating)
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- `config`: 默认配置(JSONB,包含 temperature 等)
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#### 3. Trigger 函数
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```sql
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CREATE OR REPLACE FUNCTION create_profile_for_new_user()
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RETURNS trigger AS $$
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BEGIN
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-- 插入 profile(现有逻辑)
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INSERT INTO profiles (id, username, avatar_url, bio, settings, created_at, updated_at)
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VALUES (
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NEW.id,
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COALESCE(
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NEW.raw_user_meta_data ->> 'username',
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split_part(NEW.email, '@', 1),
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'user_' || substring(NEW.id::text, 1, 8)
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),
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NULL, NULL, '{}'::jsonb, now(), now()
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)
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ON CONFLICT (id) DO NOTHING;
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-- 从 user_agent_catalog 批量插入 user_agents
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INSERT INTO user_agents (id, user_id, llm_id, agent_type, config, status, created_by, updated_by)
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SELECT
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gen_random_uuid(),
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NEW.id,
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uac.llm_id,
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uac.agent_type,
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uac.config,
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uac.status,
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NEW.id,
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NEW.id
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FROM user_agent_catalog uac;
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql SECURITY DEFINER SET search_path = public;
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```
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### Implementation Components
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#### 1. Python Model
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```python
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# backend/src/models/user_agent_catalog.py
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class UserAgentCatalog(TimestampMixin, Base):
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__tablename__ = "user_agent_catalog"
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agent_type: Mapped[str] = mapped_column(String(20), primary_key=True)
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llm_id: Mapped[uuid.UUID] = mapped_column(UUID, ForeignKey("llms.id"), nullable=False)
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status: Mapped[str] = mapped_column(String(20), nullable=False)
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config: Mapped[dict] = mapped_column(JSONB, nullable=False, server_default="{}")
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```
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#### 2. 初始化函数
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```python
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# backend/src/core/config/initial/init_data.py
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class UserAgentCatalogSeed(BaseModel):
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agent_type: str
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llm_model_code: str
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status: str
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config: dict[str, Any]
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def load_user_agent_catalog(catalog_path: Path | None = None) -> dict[str, Any]:
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path = catalog_path or _default_user_agent_catalog_path()
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with path.open("r", encoding="utf-8") as file:
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loaded = yaml.safe_load(file) or {}
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# ... validation logic
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return parsed.model_dump()
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async def initialize_user_agent_catalog() -> None:
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catalog = load_user_agent_catalog()
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async with AsyncSessionLocal() as session:
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async with session.begin():
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for agent in catalog["agents"]:
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# 查找 llm_id
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llm = await session.execute(
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select(Llm).where(Llm.model_code == agent["llm_model_code"])
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)
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llm_id = llm.scalar_one().id
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# Upsert
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existing = await session.execute(
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select(UserAgentCatalog).where(
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UserAgentCatalog.agent_type == agent["agent_type"]
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)
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)
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catalog_entry = existing.scalar_one_or_none()
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if catalog_entry:
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catalog_entry.llm_id = llm_id
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catalog_entry.status = agent["status"]
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catalog_entry.config = agent["config"]
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else:
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session.add(UserAgentCatalog(
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agent_type=agent["agent_type"],
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llm_id=llm_id,
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status=agent["status"],
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config=agent["config"]
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))
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logger.info("Initialized user agent catalog")
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async def initialize_data() -> bool:
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await initialize_llm_catalog()
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await initialize_user_agent_catalog() # 新增
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return True
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```
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### Migration Strategy
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#### 1. Alembic 迁移
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```python
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# backend/alembic/versions/20260302_add_user_agent_catalog.py
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def upgrade() -> None:
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# 创建表
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op.create_table(
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"user_agent_catalog",
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sa.Column("agent_type", sa.String(20), nullable=False),
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sa.Column("llm_id", sa.UUID(), nullable=False),
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sa.Column("status", sa.String(20), nullable=False),
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sa.Column("config", postgresql.JSONB(), nullable=False, server_default="{}"),
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sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("now()")),
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sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("now()")),
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sa.PrimaryKeyConstraint("agent_type"),
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sa.ForeignKeyConstraint(["llm_id"], ["llms.id"], ondelete="RESTRICT"),
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)
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op.execute(
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"ALTER TABLE user_agent_catalog "
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"ADD CONSTRAINT chk_status CHECK (status IN ('active', 'paused', 'migrating'))"
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)
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# 替换 trigger 函数
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op.execute("""
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CREATE OR REPLACE FUNCTION public.create_profile_for_new_user()
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-- ... 新的 trigger 代码
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""")
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# 为已存在用户补充 user_agents
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op.execute("""
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INSERT INTO user_agents (id, user_id, llm_id, agent_type, config, status, created_by, updated_by)
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SELECT
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gen_random_uuid(),
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p.id,
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uac.llm_id,
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uac.agent_type,
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uac.config,
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uac.status,
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p.id,
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p.id
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FROM profiles p
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CROSS JOIN user_agent_catalog uac
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WHERE NOT EXISTS (
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SELECT 1 FROM user_agents ua WHERE ua.user_id = p.id
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);
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""")
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_enable_rls("user_agent_catalog")
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def downgrade() -> None:
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# 恢复旧 trigger
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op.execute("""
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CREATE OR REPLACE FUNCTION public.create_profile_for_new_user()
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-- ... 旧的 trigger 代码(只有 profile)
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""")
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_drop_rls("user_agent_catalog")
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op.drop_table("user_agent_catalog")
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```
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### Configuration Update Flow
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**用户修改配置的步骤:**
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1. 编辑 `backend/src/core/config/static/database/user_agent_catalog.yaml`
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2. 重启应用(或调用 `uv run python -m core.runtime.cli bootstrap`)
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3. `initialize_user_agent_catalog()` 自动执行
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4. user_agent_catalog 表更新(upsert)
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5. 新用户注册时使用新配置
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**示例:**
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```yaml
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# 修改 temperature
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agents:
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- agent_type: INTENT_RECOGNITION
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llm_model_code: qwen3.5-flash
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status: active
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config:
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temperature: 0.5 # 从 0.7 改为 0.5
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```
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重启应用后,新注册的用户 INTENT_RECOGNITION agent 会使用 temperature=0.5。
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### Testing Strategy
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1. **单元测试:** `load_user_agent_catalog()` 函数
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2. **集成测试:** `initialize_user_agent_catalog()` upsert 逻辑
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3. **E2E 测试:** 新用户注册后自动创建 3 个 user_agents 记录
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4. **回归测试:** 已存在用户不受影响
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### File Changes
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```
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backend/src/core/config/static/database/user_agent_catalog.yaml (填充)
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backend/src/models/user_agent_catalog.py (新建)
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backend/src/core/config/initial/init_data.py (扩展)
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backend/alembic/versions/20260302_add_user_agent_catalog.py (新建)
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backend/tests/unit/core/test_agent_init_data.py (扩展)
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```
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---
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## TOKEN-001: Flutter 硬编码颜色迁移
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### Problem
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109 处硬编码 `Color(0xFF...)` 违反 `apps/AGENTS.md` 规则:"NEVER hardcode colors, sizes, or spacing values"。
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分散在 11 个页面文件:
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- register_screen.dart, register_verification_screen.dart
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- settings_screen.dart, account_screen.dart
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- contacts_screen.dart, calendar_event_detail_screen.dart
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- add_contact_screen.dart, features_screen.dart
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- memory_screen.dart, home_screen.dart
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- todo_detail_screen.dart
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### Solution
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**渐进式迁移:**
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1. 扫描所有硬编码颜色,统计频率
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2. 将高频颜色添加到 `design_tokens.dart` 的 `AppColors`
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3. 逐页面替换硬编码为 `AppColors.xxx`
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4. 保留合理的动态颜色场景
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### Migration Steps
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#### Phase 1: 扫描和统计
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```bash
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# 扫描所有硬编码颜色
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grep -r "Color(0x" apps/lib --include="*.dart" | \
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sed 's/.*Color(0x\([0-9A-Fa-f]*\)).*/\1/' | \
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sort | uniq -c | sort -rn
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```
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**预期输出:**
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```
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45 2196F3 # 蓝色(链接/主色)
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23 D32F2F # 红色(错误)
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18 4CAF50 # 绿色(成功)
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...
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```
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#### Phase 2: 扩展 AppColors
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```dart
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// apps/lib/core/theme/design_tokens.dart
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class AppColors {
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// 现有颜色...
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// 从硬编码迁移的颜色
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static const Color linkBlue = Color(0xFF2196F3);
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static const Color errorRed = Color(0xFFD32F2F);
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static const Color successGreen = Color(0xFF4CAF50);
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// ... 根据扫描结果添加
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}
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```
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#### Phase 3: 逐页面迁移
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```dart
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// Before
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Container(
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color: Color(0xFF2196F3),
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child: Text('Link'),
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)
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// After
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Container(
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color: AppColors.linkBlue,
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child: Text('Link'),
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)
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```
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**迁移顺序(按频率):**
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1. register_screen.dart (最高频)
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2. register_verification_screen.dart
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3. settings_screen.dart
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4. ... (其他页面)
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#### Phase 4: 测试和验证
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1. **视觉测试:** 逐页面检查 UI 是否正常
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2. **Widget 测试:** 更新测试使用 AppColors
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3. **设计审查:** 确认颜色一致性
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### Allowed Exceptions
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以下场景可以保留硬编码(需在 AGENTS.md 中明确):
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- 动态计算的渐变色
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- 图片处理相关的颜色
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- 第三方库要求的颜色格式
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### Testing Strategy
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1. **Widget 测试:** 确保组件仍然正常渲染
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2. **视觉回归测试:** 对比迁移前后的截图
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3. **代码审查:** 确保没有遗漏的硬编码
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### File Changes
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```
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apps/lib/core/theme/design_tokens.dart (扩展)
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apps/lib/features/*/ui/screens/*.dart (迁移)
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apps/AGENTS.md (明确允许的场景)
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```
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---
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## Implementation Order
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1. **TRIGGER-001** (优先级更高,影响功能)
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- 创建 catalog YAML
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- 创建 model 和迁移
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- 扩展初始化逻辑
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- 修改 trigger
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- 测试
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2. **TOKEN-001** (次要,不影响功能)
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- 扫描硬编码
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- 扩展 AppColors
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- 逐页面迁移
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- 测试
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## Success Criteria
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### TRIGGER-001
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- [ ] 新用户注册后自动创建 3 个 user_agents 记录
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- [ ] 已存在用户不受影响
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- [ ] 配置可通过 YAML + 重启更新
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- [ ] 所有测试通过
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### TOKEN-001
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- [ ] 硬编码颜色数量从 109 减少到 < 10
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- [ ] UI 视觉无回归
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- [ ] 所有测试通过
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## Risks and Mitigations
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### TRIGGER-001
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- **风险:** llms 表中缺少对应的 model_code
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- **缓解:** 初始化前检查 llms 表是否存在,提供清晰的错误信息
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- **风险:** Trigger 性能影响
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- **缓解:** catalog 表只有 3 行,查询性能可忽略
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### TOKEN-001
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- **风险:** 迁移后颜色不一致
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- **缓解:** 视觉回归测试 + 设计审查
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- **风险:** 遗漏某些硬编码
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- **缓解:** 自动化扫描 + 代码审查
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## Related Documents
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- `docs/bugs/backlog.md` - Bug 列表
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- `backend/AGENTS.md` - Backend 开发规则
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- `apps/AGENTS.md` - Flutter 开发规则
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- `backend/src/core/config/initial/init_data.py` - 现有初始化逻辑
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- `backend/alembic/versions/20260227_0006_invite_codes_and_profile_referral.py` - Trigger 修改参考
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Reference in New Issue
Block a user