security: API Key 权限范围 + 过期时间 + 用量追踪

增强:
- 权限模板: readonly / monitor / full
- 每 key 独立权限列表, 注入 user['perms']
- 可选过期时间 (ttl 参数)
- 过期 key 自动清理 (加载时 + 验证时)
- request_count 用量追踪
- 标记 is_api_key = True

Co-Authored-By: Claude <noreply@anthropic.com>

services/web_panel/routes/apikeys.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""API Key 管理路由 — 创建/列表/删除长期有效的 API 密钥"""
+"""API Key 管理路由 — 创建/列表/删除长期有效的 API 密钥，支持权限范围和过期时间"""
 import secrets
 import time
 import logging
@@ -8,8 +8,21 @@ from ..utils.auth import panel_auth
 
 logger = logging.getLogger(__name__)
 
-# 持久化 key: 内存 + DB 双写
-# 格式: {key_string: {name, created_at, last_used}}
+# 预定义权限模板
+PERMISSION_PRESETS = {
+    "readonly": [
+        "framework.status.read",
+        "plugin.info.read",
+    ],
+    "monitor": [
+        "framework.status.read",
+        "plugin.info.read",
+        "framework.event.subscribe",
+    ],
+    "full": ["admin"],
+}
+
+# 持久化 key: {key_string: {name, created_at, expires_at, permissions, last_used, request_count}}
 API_KEYS: dict[str, dict] = {}
 
 
@@ -28,10 +41,15 @@ def _load_keys_from_db(app):
             import json
             raw = db.get_config("api_keys", "{}")
             stored = json.loads(raw) if raw else {}
-            for k, v in stored.items():
+            now = time.time()
+            for k, v in list(stored.items()):
+                # 清理过期 key
+                if v.get("expires_at") and now > v["expires_at"]:
+                    logger.info(f"🔑 过期 API Key 已清理: {v.get('name', '?')}")
+                    continue
                 API_KEYS[k] = v
-            if stored:
-                logger.info(f"🔑 从数据库恢复了 {len(stored)} 个 API Key")
+            if API_KEYS:
+                logger.info(f"🔑 从数据库恢复了 {len(API_KEYS)} 个 API Key")
     except Exception as e:
         logger.warning(f"API Key 恢复失败: {e}")
 
@@ -55,11 +73,17 @@ def _save_keys_to_db(app):
 
 
 def validate_api_key(token: str) -> dict | None:
-    """验证 API Key，返回 key_info 或 None"""
-    if token in API_KEYS:
-        API_KEYS[token]["last_used"] = time.time()
-        return API_KEYS[token]
-    return None
+    """验证 API Key — 检查过期，更新使用统计，返回 key_info 或 None"""
+    if token not in API_KEYS:
+        return None
+    info = API_KEYS[token]
+    # 检查过期
+    if info.get("expires_at") and time.time() > info["expires_at"]:
+        del API_KEYS[token]
+        return None
+    info["last_used"] = time.time()
+    info["request_count"] = info.get("request_count", 0) + 1
+    return info
 
 
 def setup_routes(app, prefix=""):
@@ -69,16 +93,22 @@ def setup_routes(app, prefix=""):
 
     # ── 列表 ──
     async def list_keys(req):
+        now = time.time()
         keys = []
         for k, v in API_KEYS.items():
+            expired = v.get("expires_at") and now > v["expires_at"]
             keys.append({
-                "key": k[:8] + "..." + k[-4:],  # 脱敏显示
-                "full_key": k,                    # 仅创建时返回完整 key
+                "key": k[:8] + "..." + k[-4:],
+                "full_key": k,
                 "name": v.get("name", ""),
+                "permissions": v.get("permissions", []),
                 "created_at": v.get("created_at", 0),
+                "expires_at": v.get("expires_at", 0),
                 "last_used": v.get("last_used", 0),
+                "request_count": v.get("request_count", 0),
+                "expired": expired,
             })
-        return web.json_response({"keys": keys})
+        return web.json_response({"keys": keys, "presets": PERMISSION_PRESETS})
 
     # ── 创建 ──
     async def create_key(req):
@@ -88,19 +118,38 @@ def setup_routes(app, prefix=""):
             if not name:
                 return web.json_response({"error": "名称不能为空"}, status=400)
 
-            key = "sk-" + secrets.token_hex(24)  # sk- + 48 hex = 51 chars
+            # 权限范围: 模板名 或 自定义列表
+            preset = data.get("preset", "monitor")
+            if preset in PERMISSION_PRESETS:
+                permissions = list(PERMISSION_PRESETS[preset])
+            else:
+                permissions = data.get("permissions", ["framework.status.read"])
+
+            # 过期时间 (秒), 0 = 永不过期
+            ttl = int(data.get("ttl", 0))
+            expires_at = (time.time() + ttl) if ttl > 0 else 0
+
+            key = "sk-" + secrets.token_hex(24)
             API_KEYS[key] = {
                 "name": name,
+                "permissions": permissions,
                 "created_at": time.time(),
+                "expires_at": expires_at,
                 "last_used": 0,
+                "request_count": 0,
             }
             _save_keys_to_db(req.app)
-            logger.info(f"🔑 API Key 已创建: {name} ({key[:12]}...)")
+            logger.info(
+                f"🔑 API Key 已创建: {name} ({key[:12]}...) "
+                f"perms={permissions} ttl={ttl}s"
+            )
 
             return web.json_response({
                 "ok": True,
                 "key": key,
                 "name": name,
+                "permissions": permissions,
+                "expires_at": expires_at,
                 "created_at": API_KEYS[key]["created_at"],
             })
         except Exception as e: