feat: 任务详情 LLM 请求数（cost_records 存 completions）

cloud/cost.py

@@ -223,6 +223,7 @@ class CostStore:
                 usd_micros INTEGER,
                 source TEXT,
                 fallback_count INTEGER DEFAULT 0,
+                completions INTEGER DEFAULT 0,
                 day TEXT,
                 created_at REAL
             )"""
@@ -246,6 +247,14 @@ class CostStore:
                 conn.commit()
             except Exception:
                 pass
+        if "completions" not in cols:
+            try:
+                conn.execute(
+                    "ALTER TABLE cost_records"
+                    " ADD COLUMN completions INTEGER DEFAULT 0")
+                conn.commit()
+            except Exception:
+                pass
 
     def __init__(self, db_path):
         self.db_path = db_path
@@ -280,7 +289,7 @@ class CostStore:
 
     def record(self, task_id, project_id, model, input_tokens=0,
                output_tokens=0, cached_input_tokens=0, usd_micros=None,
-               source="actual", fallback_count=0):
+               source="actual", fallback_count=0, completions=0):
         """Insert one cost record; returns its row id.
 
         ``total_tokens`` is computed as input + output, and ``day`` is
@@ -305,11 +314,12 @@ class CostStore:
                 """INSERT INTO cost_records
                    (task_id, project_id, model, input_tokens, output_tokens,
                     cached_input_tokens, total_tokens, usd_micros, source,
-                    fallback_count, day, created_at)
-                   VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)""",
+                    fallback_count, completions, day, created_at)
+                   VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)""",
                 (task_id, project_id, model, input_tokens, output_tokens,
                  cached_input_tokens, total_tokens, usd_micros, source,
-                 int(fallback_count or 0), day, created_at),
+                 int(fallback_count or 0), int(completions or 0), day,
+                 created_at),
             )
             conn.commit()
             return cursor.lastrowid
@@ -350,7 +360,8 @@ class CostStore:
                      COALESCE(SUM(cached_input_tokens), 0),
                      COALESCE(SUM(CASE WHEN source = 'actual'
                                        AND usd_micros IS NULL
-                                       THEN total_tokens ELSE 0 END), 0)
+                                       THEN total_tokens ELSE 0 END), 0),
+                     COALESCE(SUM(completions), 0)
                    FROM cost_records WHERE %s""" % where,
                 params,
             ).fetchone()
@@ -358,7 +369,7 @@ class CostStore:
             if conn is not self._conn:
                 conn.close()
         (total_tokens, usd_micros, turns, fallback_count, actual,
-         estimated, cached, unpriced) = row
+         estimated, cached, unpriced, completions) = row
         return {
             "total_tokens": int(total_tokens),
             "usd_micros": int(usd_micros),
@@ -370,6 +381,10 @@ class CostStore:
             # usd 求和只覆盖有价的行；无价 actual 行的 token 在此，
             # 不会被静默算成 0 美元。
             "unpriced_actual_tokens": int(unpriced),
+            # LLM 请求数：host.py 每回合汇总的 completions 之和
+            # （每个 thread/tokenUsage/updated 算一次上游补全）；
+            # turns 只是记账行数，两者不是一回事。
+            "llm_requests": int(completions),
         }
 
     def report_by_task(self, task_id) -> dict: