fix(autonomy): hand_trigger 从 null 映射改为 handAutoTrigger 字段

根因: autonomy-manager.ts:268 将 hand_trigger 硬编码为 null，
导致任何自主权级别都无法自动触发 Hand。
新增 handAutoTrigger 字段，autonomous 级别默认 true。
UI 增加对应开关。

desktop/src/components/AutonomyConfig.tsx

@@ -381,6 +381,15 @@ export function AutonomyConfig({ className = '', onConfigChange }: AutonomyConfi
                 })
               }
             />
+            <ActionToggle
+              label="自动触发 Hand 能力"
+              enabled={config.allowedActions.handAutoTrigger}
+              onChange={(enabled) =>
+                updateConfig({
+                  allowedActions: { ...config.allowedActions, handAutoTrigger: enabled },
+                })
+              }
+            />
           </div>
         </div>
 

desktop/src/lib/autonomy-manager.ts

@@ -48,6 +48,7 @@ export interface AutonomyConfig {
     selfModification: boolean;
     autoCompaction: boolean;
     autoReflection: boolean;
+    handAutoTrigger: boolean;
   };
   approvalThreshold: {
     importanceMax: number;  // Auto-approve if importance <= this (default: 5)
@@ -112,6 +113,7 @@ export const DEFAULT_AUTONOMY_CONFIGS: Record<AutonomyLevel, AutonomyConfig> = {
       selfModification: false,
       autoCompaction: false,
       autoReflection: false,
+      handAutoTrigger: false,
     },
     approvalThreshold: {
       importanceMax: 0,
@@ -129,6 +131,7 @@ export const DEFAULT_AUTONOMY_CONFIGS: Record<AutonomyLevel, AutonomyConfig> = {
       selfModification: false,
       autoCompaction: true,
       autoReflection: true,
+      handAutoTrigger: false,
     },
     approvalThreshold: {
       importanceMax: 5,
@@ -146,6 +149,7 @@ export const DEFAULT_AUTONOMY_CONFIGS: Record<AutonomyLevel, AutonomyConfig> = {
       selfModification: false, // Always require approval for self-modification
       autoCompaction: true,
       autoReflection: true,
+      handAutoTrigger: true,
     },
     approvalThreshold: {
       importanceMax: 7,
@@ -265,7 +269,7 @@ export class AutonomyManager {
       skill_uninstall: 'skillAutoInstall',
       config_change: null,
       workflow_trigger: 'autoCompaction',
-      hand_trigger: null,
+      hand_trigger: 'handAutoTrigger',
       llm_call: 'autoReflection',
       reflection_run: 'autoReflection',
       compaction_run: 'autoCompaction',