feat: run_command 改为下拉框设置自动/需确认/禁用三种模式

- 替换原有开关为下拉选择框（selectRunCommandMode）
- 新增 setRunCommandMode() 动态控制确认行为
- 需确认模式：弹窗确认后执行
- 自动模式：直接执行，无需确认
- 禁用模式：工具不可用
- 新增 .tool-card-badge.disabled 样式
- 状态从 runCommandEnabled(bool) 迁移为 runCommandMode(string)

src/renderer/main.ts

@@ -22,7 +22,7 @@ import { initHistoryModal, closeHistoryModal } from './components/history-modal.
 import { initMemoryModal } from './components/memory-modal.js';
 import { initToolsModal, closeToolsModal } from './components/tools-modal.js';
 import { initMemoryManager } from './services/memory-manager.js';
-import { setToolEnabled } from './services/tool-registry.js';
+import { setToolEnabled, setRunCommandMode } from './services/tool-registry.js';
 import { initToolConfirmModal } from './components/tool-confirm-modal.js';
 import { initWorkspacePanel } from './components/workspace-panel.js';
 import { initLogPanel, addLog } from './services/log-service.js';
@@ -190,7 +190,7 @@ async function init(): Promise<void> {
 
     // ── 防御性重置：确保首次启动不会遗留脏状态 ──
     state.set('toolCallingEnabled', false);
-    state.set('runCommandEnabled', true);  // 默认开启（需确认）
+    state.set('runCommandMode', 'confirm');  // 默认需确认
     state.set('memoryEnabled', true);
     state.set('thinkEnabled', false);
 
@@ -236,14 +236,12 @@ async function init(): Promise<void> {
 
     // ── Tool Calling 设置 ──
     const toolCallingEnabled = await db.getSetting('toolCallingEnabled', false);
-    const runCommandEnabled = await db.getSetting('runCommandEnabled', true);  // 默认开启（需确认）
+    const runCommandMode = await db.getSetting('runCommandMode', 'confirm') as 'auto' | 'confirm' | 'disabled';
     state.set('toolCallingEnabled', toolCallingEnabled);
-    state.set('runCommandEnabled', runCommandEnabled);
-    if (!runCommandEnabled) setToolEnabled('run_command', false);  // 仅在用户明确关闭时禁用
+    state.set('runCommandMode', runCommandMode);
+    setRunCommandMode(runCommandMode);
     const toggleTC = document.querySelector<HTMLInputElement>('#toggleToolCalling');
     if (toggleTC) toggleTC.checked = toolCallingEnabled;
-    const toggleRC = document.querySelector<HTMLInputElement>('#toggleRunCommand');
-    if (toggleRC) toggleRC.checked = runCommandEnabled;
 
     // ── Agent 记忆设置 ──
     const memoryEnabled = await db.getSetting('memoryEnabled', true);