add per-game accuracy and outcome table to stats/notifications

Games-of-period responses can now include a per-game breakdown
(include_games) with Lichess post-analysis accuracy, plus which side
the tracked player was on and their rating change for that game.

- lichess_client.py requests accuracy=true from Lichess; stats_service
  computes per-mode average accuracy and builds GameRow entries
  (tracked_is_white, tracked_rating_diff) for blitz/rapid/classical
- /games/{username}/period gained an include_games query param
- formatters.py renders a column-aligned monospace table per game:
  outcome circle (win/loss/draw relative to the tracked player),
  rating change, accuracy, names/ratings, result — for today/yesterday
  and periodic notifications; week keeps an aggregate accuracy line
- usernames are Markdown-escaped before formatting since messages are
  now sent with parse_mode='Markdown'

LichessWebServices/main.py

@@ -498,9 +498,12 @@ async def get_games_of_period(
     until: int = Query(..., 
                       description="Конец периода (Unix timestamp в миллисекундах)", 
                       example=1641081600000),
-    rated_only: bool = Query(True, 
-                            description="Только рейтинговые игры (по умолчанию true - рекомендуется)", 
-                            example=True)
+    rated_only: bool = Query(True,
+                            description="Только рейтинговые игры (по умолчанию true - рекомендуется)",
+                            example=True),
+    include_games: bool = Query(False,
+                            description="Включить построчный список отдельных партий (только blitz/rapid/classical)",
+                            example=False)
 ):
     """
     ## Статистика игр за период
@@ -554,7 +557,7 @@ async def get_games_of_period(
         # Конвертируем миллисекунды в секунды для внутренней логики
         since_seconds = since // 1000
         until_seconds = until // 1000
-        result = await stats_service.get_games_of_period(username, since_seconds, until_seconds, rated_only)
+        result = await stats_service.get_games_of_period(username, since_seconds, until_seconds, rated_only, include_games)
         if not result.success:
             # Реальная ошибка при обращении к Lichess — не маскируем её под "0 игр"
             raise HTTPException(status_code=502, detail=result.message)