fix(web): align trend ranges, next runs and preview task records

reaction_board/web/queries.py

@@ -593,14 +593,15 @@ class DashboardQueries:
             items.sort(key=lambda item: item["aid"])
             items.sort(key=sort_key, reverse=True)
             total = len(items)
+            growth_available = any(
+                item.get("growth", {}).get("available") for item in items
+            )
             if not export:
                 start = (page - 1) * page_size
                 items = items[start:start + page_size]
             available = True
             reason = None
-            if sort in {"growth", "growth_rate"} and not any(
-                item.get("growth", {}).get("available") for item in items
-            ):
+            if sort in {"growth", "growth_rate"} and not growth_available:
                 available = False
                 reason = "需要至少两天的快照才能计算增长"
             return {
@@ -678,7 +679,12 @@ class DashboardQueries:
                     "points": [],
                     "available": False,
                 }
-            start = _date_minus(latest, days - 1) if days is not None else str(points[0]["stat_date"])
+            requested_start = (
+                _date_minus(latest, days - 1) if days is not None
+                else str(points[0]["stat_date"])
+            )
+            first_point = str(points[0]["stat_date"])
+            start = max(requested_start, first_point)
             dates = _date_range(start, latest)
             by_date = {str(point["stat_date"]): point for point in points}
             series: dict[str, list[int | None]] = {}
@@ -923,7 +929,8 @@ class DashboardQueries:
                     "days": days,
                 }
             latest = max(str(row["stat_date"]) for row in rows if int(row["ok"]) == 1) if any(int(row["ok"]) == 1 for row in rows) else str(rows[-1]["stat_date"])
-            start = _date_minus(latest, days - 1)
+            first_date = str(rows[0]["stat_date"])
+            start = max(_date_minus(latest, days - 1), first_date)
             dates = _date_range(start, latest)
             by_date = {str(row["stat_date"]): row for row in rows}
             series = []
@@ -1034,13 +1041,17 @@ class DashboardQueries:
                 "folder_sync": int(now + cfg.schedule.folder_sync_minutes * 60),
                 "snapshot": int(next_daily_run(now, cfg.schedule.snapshot_at)),
             }
-            for name, key in (("discover", "discover"), ("folder_sync", "folder_sync")):
+            for name, key, interval_minutes in (
+                ("discover", "discovery", cfg.schedule.discover_minutes),
+                ("folder_sync", "folder_sync", cfg.schedule.folder_sync_minutes),
+            ):
                 record = tasks.get(key)
                 if isinstance(record, dict) and record.get("finished_at"):
-                    next_runs[name] = int(record["finished_at"]) + (
-                        cfg.schedule.discover_minutes if name == "discover"
-                        else cfg.schedule.folder_sync_minutes
-                    ) * 60
+                    interval = int(interval_minutes) * 60
+                    candidate = int(record["finished_at"]) + interval
+                    while candidate <= now:
+                        candidate += interval
+                    next_runs[name] = candidate
             errors = [
                 {"task": name, **record}
                 for name, record in tasks.items()