Update

backend/db/dbs

@@ -69,6 +69,21 @@ CREATE TABLE user_group_memberships (
   FOREIGN KEY (group_id) REFERENCES user_groups(id) ON DELETE CASCADE
 );
 
+CREATE TABLE user_server_assignments (
+  user_id INTEGER NOT NULL,
+  server_id INTEGER NOT NULL,
+  group_id INTEGER,
+  use_global_group INTEGER NOT NULL DEFAULT 0,
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (user_id, server_id),
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+  FOREIGN KEY (server_id) REFERENCES servers(id) ON DELETE CASCADE,
+  FOREIGN KEY (group_id) REFERENCES user_groups(id) ON DELETE SET NULL
+);
+CREATE INDEX idx_user_server_assignments_user ON user_server_assignments (user_id);
+CREATE INDEX idx_user_server_assignments_server ON user_server_assignments (server_id);
+
 CREATE TABLE permissions (
   id INTEGER PRIMARY KEY AUTOINCREMENT,
   key TEXT NOT NULL UNIQUE,
@@ -100,13 +115,15 @@ CREATE TABLE permission_sections (
 CREATE TABLE permission_groups (
   id INTEGER PRIMARY KEY AUTOINCREMENT,
   section_id INTEGER NOT NULL,
+  parent_group_id INTEGER,
   key TEXT NOT NULL,
   title TEXT NOT NULL,
   sort_order INTEGER NOT NULL DEFAULT 0,
   created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
   UNIQUE(section_id, key),
-  FOREIGN KEY (section_id) REFERENCES permission_sections(id) ON DELETE CASCADE
+  FOREIGN KEY (section_id) REFERENCES permission_sections(id) ON DELETE CASCADE,
+  FOREIGN KEY (parent_group_id) REFERENCES permission_groups(id) ON DELETE CASCADE
 );
 
 CREATE TABLE permission_items (
@@ -118,6 +135,7 @@ CREATE TABLE permission_items (
   sort_order INTEGER NOT NULL DEFAULT 0,
   default_level TEXT NOT NULL,
   available_levels TEXT NOT NULL,
+  is_global_scope INTEGER NOT NULL DEFAULT 1,
   is_required INTEGER NOT NULL DEFAULT 0,
   created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
@@ -210,15 +228,6 @@ CREATE TABLE server_update_scripts (
   FOREIGN KEY (server_id) REFERENCES servers(id) ON DELETE CASCADE
 );
 
-CREATE TABLE server_agents (
-  id INTEGER PRIMARY KEY AUTOINCREMENT,
-  server_id INTEGER NOT NULL UNIQUE,
-  agent_url TEXT,
-  agent_token TEXT NOT NULL,
-  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
-  updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
-  FOREIGN KEY (server_id) REFERENCES servers(id) ON DELETE CASCADE
-);
 CREATE INDEX idx_server_update_scripts_server ON server_update_scripts (server_id);
 
 CREATE TABLE user_settings (