feat: add admin social login bindings

db/migrations.py

@@ -77,6 +77,7 @@ def _get_migration_steps():
         (20, _migrate_to_v20),
         (21, _migrate_to_v21),
         (22, _migrate_to_v22),
+        (23, _migrate_to_v23),
     ]
 
 
@@ -1002,3 +1003,33 @@ def _migrate_to_v22(conn):
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_social_pending_binds_expires ON social_pending_binds(expires_at)")
 
     conn.commit()
+
+
+def _migrate_to_v23(conn):
+    """迁移到版本23 - 管理员聚合登录绑定。"""
+    cursor = conn.cursor()
+
+    cursor.execute(
+        """
+        CREATE TABLE IF NOT EXISTS admin_social_login_bindings (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            admin_id INTEGER NOT NULL,
+            provider TEXT NOT NULL,
+            social_uid TEXT NOT NULL,
+            nickname TEXT DEFAULT '',
+            avatar_url TEXT DEFAULT '',
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            last_login_at TIMESTAMP,
+            UNIQUE (provider, social_uid),
+            UNIQUE (admin_id, provider),
+            FOREIGN KEY (admin_id) REFERENCES admins (id) ON DELETE CASCADE
+        )
+        """
+    )
+    cursor.execute("CREATE INDEX IF NOT EXISTS idx_admin_social_login_bindings_admin ON admin_social_login_bindings(admin_id)")
+    cursor.execute(
+        "CREATE INDEX IF NOT EXISTS idx_admin_social_login_bindings_provider_uid ON admin_social_login_bindings(provider, social_uid)"
+    )
+
+    conn.commit()