refactor: 以 bzzoiro 为唯一数据源的全面重构

数据源统一为 bzzoiro,移除 Understat 与 injuries:
- 删除 src/data/understat.py / injuries.py 及相关测试
- 删除 injuries 模型与表;扩展 match_stats(xG 之外增加 big_chances/fouls)
- 新增 standings 表(联赛积分榜:位置/积分/xG/走势/分区)
- matches 表增加 source_event_id 血缘列,支撑统计回填

采集管线(bzzoiro 三条管线):
- events:赛程/比分(/events/),记录 source_event_id
- standings:积分榜快照(/leagues/{id}/standings/)
- stats:已完赛比赛详细统计回填(/events/{id}/stats/)

预测增强:
- standings_slice 替代 injuries_slice;积分榜专家替代阵容完整性专家
- AGENT_META runtime_config 同步更新

管理后台:
- ingest 路由重写为单一 bzzoiro 入口 + task 参数(events/standings/stats/all)
- 新增 /admin/data-completeness 数据完整性分析 API
- 数据源状态页简化为 bzzoiro 单源

前端:
- 采集页重构为任务驱动(比赛/积分榜/统计回填/全量)
- 新增「数据完整性」可视化页(覆盖率矩阵/字段完整率/健康摘要)
- 新增主站积分榜页(/standings)与比赛详情完整统计面板
- agent 名称同步更新(injuries→standings)

迁移 0015_bzzoiro_single_source 已在容器内验证通过,后端测试全部通过。

Co-Authored-By: new-provider/LongCat-2.0 <<EMAIL>>

frontend/src/admin/dal.ts

@@ -61,33 +61,16 @@ export async function fetchDashboard(): Promise<DashboardStats> {
 // ── 数据采集 ────────────────────────────────────────────────────
 
 export async function triggerCollection(req: CollectionRequest): Promise<any> {
-  const sourceMap: Record<string, { path: string; body: any }> = {
-    bzzoiro: {
-      path: `${API_BASE}/ingest/bzzoiro`,
-      body: {
-        leagues: req.leagues,
-        date_from: req.date_from,
-        date_to: req.date_to,
-        status: req.status || undefined,  // 空 = 已完赛 + 未开赛都采集
-      },
-    },
-    understat: {
-      path: `${API_BASE}/ingest/understat`,
-      body: {
-        league: req.league,
-        season: req.season ? parseInt(req.season) : new Date().getFullYear(),
-      },
-    },
-    injuries: {
-      path: `${API_BASE}/ingest/injuries`,
-      body: {
-        date: req.date_from || new Date().toLocaleDateString('sv-SE'),
-      },
-    },
+  const body: Record<string, any> = {
+    leagues: req.leagues,
+    date_from: req.date_from,
+    date_to: req.date_to,
+    status: req.status || undefined,
+    task: req.task || 'events',
+    limit: req.limit || 100,
+    season: req.season || undefined,
   }
-  const cfg = sourceMap[req.source]
-  if (!cfg) throw new Error(`未知数据源: ${req.source}`)
-  return api.post(cfg.path, cfg.body)
+  return api.post(`${API_BASE}/ingest/bzzoiro`, body)
 }
 
 // ── 预测管理 ────────────────────────────────────────────────────
@@ -183,6 +166,65 @@ export async function fetchHealth(): Promise<any> {
   }
 }
 
+// ── 数据完整性 ──────────────────────────────────────────────────
+
+export interface DataCompletenessResponse {
+  generated_at: string
+  totals: { finished_matches: number; stats_rows: number; stats_coverage_pct: number }
+  issues: string[]
+  leagues: Array<{
+    code: string
+    name: string
+    country?: string
+    matches: { total: number; finished: number; scheduled: number; with_source_id: number; earliest_match?: string; latest_match?: string }
+    stats: {
+      rows: number
+      fields: Record<string, { count: number; pct: number }>
+    }
+    standings: { rows: number; latest_retrieved?: string }
+  }>
+}
+
+export async function fetchDataCompleteness(): Promise<DataCompletenessResponse> {
+  return api.get<DataCompletenessResponse>(`${API_BASE}/admin/data-completeness`)
+}
+
+// ── 积分榜(主站 + 管理后台共用) ─────────────────────────────────
+
+export interface StandingRow {
+  position: number
+  team: string
+  team_en: string
+  played: number
+  won: number
+  drawn: number
+  lost: number
+  goals_for: number
+  goals_against: number
+  goal_diff: number
+  points: number
+  xg_for: number | null
+  xg_against: number | null
+  form: string | null
+  zone: string | null
+}
+
+export interface StandingsLeague {
+  league_code: string
+  league_name: string
+  season: string
+  retrieved_at: string | null
+  rows: StandingRow[]
+}
+
+export async function fetchStandings(league?: string, season?: string): Promise<{ leagues: StandingsLeague[] }> {
+  const sp = new URLSearchParams()
+  if (league) sp.set('league', league)
+  if (season) sp.set('season', season)
+  const qs = sp.toString()
+  return api.get<{ leagues: StandingsLeague[] }>(`${API_BASE}/standings${qs ? `?${qs}` : ''}`)
+}
+
 // ── 数据源管理 ──────────────────────────────────────────────────
 
 /**