重构: 切换存储至SQLite，启用INI配置与API Key校验

src/gasflux/blueprints/stats.py

@@ -1,5 +1,5 @@
 """
-Statistics Blueprint
+Statistics Blueprintoutput_dir
 Provides API statistics and monitoring endpoints.
 """
 
@@ -7,7 +7,7 @@ import time
 from flask import Blueprint, current_app
 
 
-from ..shared import _format_response, log_performance, logger,stats_collector, task_status
+from ..shared import _format_response, log_performance, logger, stats_collector
 
 # Create blueprint
 stats_bp = Blueprint('stats', __name__, url_prefix='/stats')
@@ -46,17 +46,33 @@ def get_stats():
             logger.warning(f"Failed to collect system metrics: {e}")
             stats_data['system'] = {'error': str(e)}
 
-        # Add recent task information
+        # Add recent task information from database
         recent_tasks = []
-        current_time = time.time()
-        for task_id, task_info in list(task_status.items())[-20:]:  # Last 20 tasks
-            age = current_time - task_info.get('updated_at', 0)
-            recent_tasks.append({
-                'task_id': task_id,
-                'status': task_info.get('status'),
-                'age_seconds': round(age, 1),
-                'message': task_info.get('message', '')[:100]  # Truncate long messages
-            })
+        try:
+            from ..db import get_db
+            db = get_db()
+            current_time = time.time()
+
+            rows = db.execute("""
+                SELECT task_id, status, message, updated_at
+                FROM tasks
+                WHERE deleted_at IS NULL
+                ORDER BY updated_at DESC
+                LIMIT 20
+            """).fetchall()
+
+            for row in rows:
+                updated_at = row[3] if row[3] else 0
+                age = current_time - updated_at
+                recent_tasks.append({
+                    'task_id': row[0],  # task_id
+                    'status': row[1],   # status
+                    'age_seconds': round(age, 1),
+                    'message': (row[2] or '')[:100]  # message, truncate long messages
+                })
+        except Exception as e:
+            logger.warning(f"Failed to get recent tasks from database: {e}")
+            recent_tasks = []
 
         stats_data['recent_tasks'] = recent_tasks