feat: 足球 LLM 预测服务初始提交

Profeto — 给 LLM 提供数据,让 LLM 预测足球比分。

核心模块:
- FastAPI 后端 + PostgreSQL (SQLAlchemy async)
- 多 Agent LLM 预测 (5 专家 + 终裁)
- 数据采集 (bzzoiro / understat / injuries)
- React 前端 (Vite + Tailwind)

包含:
- 数据源抽象 (DataSource 协议 + 注册表)
- Alembic 数据库迁移
- Prompt 模板 (单/多 Agent)
- 核心路径单元测试

docs/08-injuries-data-gap.md

@@ -0,0 +1,46 @@
+"""检查 injuries 数据源 api-football 的响应结构。"""
+API_FOOTBALL_INJURY_RESPONSE_EXAMPLE = """
+{
+  "response": [
+    {
+      "player": {
+        "id": 12345,
+        "name": "Bukayo Saka",
+        "photo": "https://...",
+        "type": "Missing Fixture"
+      },
+      "team": {"id": 42, "name": "Arsenal"},
+      "fixture": {"id": 100000, "date": "2026-09-15T19:00:00+00:00"},
+      "league": {"id": 39, "name": "Premier League"},
+      "reason": "Hamstring Injury",
+      "type": "Missing Fixture"
+    }
+  ]
+}
+"""
+
+"""
+injuries 表设计:
+
+CREATE TABLE injuries (
+    id SERIAL PRIMARY KEY,
+    player_id INT,                        -- api-football 球员 ID
+    player_name VARCHAR(120) NOT NULL,    -- 球员名
+    team_id INT REFERENCES teams(id),     -- 关联球队(按名归一后匹配)
+    fixture_id INT,                       -- api-football 比赛 ID(无法直接关联 matches.id)
+    league_id INT,
+    injury_type VARCHAR(50),              -- 'Missing Fixture' / 'Suspended'
+    reason VARCHAR(200),                  -- 伤停原因(如 'Hamstring Injury')
+    injury_date DATE,                     -- 伤停日期
+    return_date DATE,                     -- 预计回归日期(如有)
+    retrieved_at TIMESTAMPTZ DEFAULT now(),
+    UNIQUE(player_id, fixture_id, injury_type)  -- 幂等
+);
+
+-- 查询某队某场比赛的伤停:
+SELECT player_name, injury_type, reason
+FROM injuries
+WHERE team_id = :team_id
+  AND injury_date <= :match_date
+  AND (return_date IS NULL OR return_date >= :match_date);
+"""