移除 city_daily_max 表及 upsert 逻辑，日最高已改用 intraday_path_snapshots_store

src/database/db_manager.py

@@ -295,15 +295,6 @@ class DBManager:
             conn.execute(
                 "CREATE INDEX IF NOT EXISTS idx_airport_obs_log_icao_time ON airport_obs_log(icao, created_at DESC)"
             )
-            conn.execute("""
-                CREATE TABLE IF NOT EXISTS city_daily_max (
-                    icao TEXT PRIMARY KEY,
-                    max_temp REAL NOT NULL,
-                    obs_date TEXT NOT NULL,
-                    max_time TEXT,
-                    updated_at TEXT NOT NULL
-                )
-            """)
             self._ensure_column(conn, "users", "daily_points", "INTEGER DEFAULT 0")
             self._ensure_column(conn, "users", "daily_points_date", "TEXT")
             self._ensure_column(conn, "users", "weekly_points", "INTEGER DEFAULT 0")
@@ -1889,26 +1880,3 @@ class DBManager:
                 (str(icao).strip().upper(), str(-int(minutes))),
             ).fetchall()
             return [dict(r) for r in rows]
-
-    def upsert_daily_max(
-        self, *, icao: str, temp_c: float, obs_date: str,
-        max_time: Optional[str] = None, obs_time: str = "",
-    ) -> None:
-        """Only update if temp_c exceeds stored max for the same date."""
-        with self._get_connection() as conn:
-            row = conn.execute(
-                "SELECT max_temp, obs_date FROM city_daily_max WHERE icao = ?",
-                (str(icao).strip().upper(),),
-            ).fetchone()
-            if row and row[1] == obs_date:
-                if temp_c <= (row[0] or -999.0):
-                    return  # not a new high
-            # new day or new high: upsert
-            conn.execute(
-                """INSERT OR REPLACE INTO city_daily_max
-                   (icao, max_temp, obs_date, max_time, updated_at)
-                   VALUES (?, ?, ?, ?, ?)""",
-                (str(icao).strip().upper(), temp_c, obs_date,
-                 max_time or "", obs_time or datetime.now().isoformat()),
-            )
-            conn.commit()