fix(growth): rank the rate board by a smoothed score

Show the real percentage on the card, but sort with delta / (baseline + prior) so a small baseline cannot dominate. Same-day publishes stay off the rate board.

reaction_board/web/queries.py

@@ -20,6 +20,7 @@ from ..analytics import (
     METRICS,
     MIN_VIEW_FOR_GROWTH_RATE,
     compute_growth,
+    smoothed_growth_rate,
     content_hours,
     eb_rate,
     effective_shrink_minutes,
@@ -437,6 +438,8 @@ class DashboardQueries:
             growth = compute_growth(current, 0, 0, allow_zero_gap=True)
             payload = growth.as_dict()
             payload["baseline"] = "zero"
+            # previous=0 时 rate = view/1，会按原始播放碾压真日环比。
+            payload["rate"] = None
             return payload
         try:
             open_at = snapshot.get("open_captured_at")
@@ -1031,9 +1034,13 @@ class DashboardQueries:
                 if sort == "growth_rate":
                     items = [
                         item for item in items
-                        if (item["metrics"] or {}).get("view", 0) >= MIN_VIEW_FOR_GROWTH_RATE
+                        if item.get("growth", {}).get("baseline") != "zero"
+                        and item.get("growth", {}).get("rate") is not None
+                        and (item["metrics"] or {}).get("view", 0) >= MIN_VIEW_FOR_GROWTH_RATE
                     ]
 
+            rate_prior = max(0, int(analytics.growth_rate_prior))
+
             def sort_key(item: Mapping[str, Any]):
                 if sort == "added":
                     return (int(item["first_seen"]), int(item["pubdate"]))
@@ -1050,9 +1057,18 @@ class DashboardQueries:
                     )
                     value = item.get(field)
                     return value if value is not None else float("-inf")
-                if sort in {"growth", "growth_rate"}:
-                    field = "delta" if sort == "growth" else "rate"
-                    value = item.get("growth", {}).get(field)
+                if sort == "growth":
+                    value = item.get("growth", {}).get("delta")
+                    return value if value is not None else float("-inf")
+                if sort == "growth_rate":
+                    growth = item.get("growth") or {}
+                    delta = growth.get("delta")
+                    current = (item.get("metrics") or {}).get("view")
+                    if delta is None or current is None:
+                        return float("-inf")
+                    value = smoothed_growth_rate(
+                        delta, int(current) - int(delta), rate_prior,
+                    )
                     return value if value is not None else float("-inf")
                 value = (item["metrics"] or {}).get(sort)
                 return value if value is not None else -1
@@ -1069,7 +1085,12 @@ class DashboardQueries:
             reason = None
             if sort in {"growth", "growth_rate"} and not growth_available:
                 available = False
-                if growth_days == 1:
+                if growth_days == 1 and sort == "growth_rate":
+                    reason = (
+                        "近 1 日增速需要前一日快照，或更早发布的新入库当天至少两次成功采样；"
+                        "当日发布不计入增速"
+                    )
+                elif growth_days == 1:
                     reason = (
                         "近 1 日增长需要前一日快照；当日发布有一次成功采样即可；"
                         "更早发布的新入库需要当天至少两次成功采样"
@@ -1108,6 +1129,7 @@ class DashboardQueries:
                 "available": available,
                 "reason": reason,
                 "duration_filter": duration_filter,
+                "growth_rate_prior": rate_prior if sort == "growth_rate" else None,
             }
         return self.db.read(run)
 
@@ -1754,6 +1776,7 @@ class DashboardQueries:
                     "video_shrink_minutes": cfg.analytics.video_shrink_minutes,
                     "shrink_minutes": cfg.analytics.shrink_minutes,
                     "home_growth_days": cfg.analytics.home_growth_days,
+                    "growth_rate_prior": cfg.analytics.growth_rate_prior,
                 },
                 "heat_weights": {
                     metric: float(value)