清理废弃代码并同步全部文档：删除钱包异动监控模块，移除已废弃功能的文档引用

- 删除 polymarket_wallet_activity_watcher.py（914行）及 runtime_coordinator 调度
- 移除 LGBM / Polymarket 价格层 / Groq / prewarm 等 v1.7.0 已废弃功能的文档引用
- 清理 6 个死文档链接，更新文档索引和版本日期
- 移除 POLYMARKET_WALLET_ACTIVITY_* / PREWARM_* 等废弃环境变量

Directive: 文档与代码同步清理，无功能变更
Tested: pytest tests/test_bot_runtime_coordinator.py pass
Confidence: high

src/bot/runtime_coordinator.py

@@ -85,7 +85,6 @@ class StartupCoordinator:
         loops = [
             self._start_airport_high_freq_loop(),
             self._start_polygon_wallet_loop(),
-            self._start_polymarket_wallet_activity_loop(),
             self._start_weekly_reward_loop(),
             self._start_payment_event_loop(),
             self._start_payment_confirm_loop(),
@@ -219,18 +218,6 @@ class StartupCoordinator:
             ).start_polygon_wallet_watch_loop(self.bot),
         )
 
-    def _start_polymarket_wallet_activity_loop(self) -> LoopStatus:
-        return LoopStatus(
-            key="polymarket_wallet_activity",
-            label="Polymarket 钱包异动监听（已停用）",
-            configured_enabled=False,
-            started=False,
-            reason="retired_replaced_by_market_monitor",
-            details={
-                "note": "wallet activity watcher retired",
-            },
-        )
-
     def _start_weekly_reward_loop(self) -> LoopStatus:
         enabled = _env_bool("POLYWEATHER_WEEKLY_REWARD_ENABLED", True)
         chat_ids = get_telegram_chat_ids_from_env()