fix: 彻底移除 /loop 及 cron 工具的 feature('AGENT_TRIGGERS') gate

上次提交仅移除了 isKairosCronEnabled 中的 gate，但 /loop 整条链路
仍被 feature('AGENT_TRIGGERS') 拦截导致无法使用：
- skills/bundled/index.ts: registerLoopSkill() 未被调用
- tools.ts: CronCreate/Delete/List 工具未加载
- constants/tools.ts: cron 工具名未加入 teammate 工具列表
- screens/REPL.tsx: useScheduledTasks hook 被跳过
- cli/print.ts: pipe 模式 cron 调度器未初始化

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/skills/bundled/index.ts

@@ -9,6 +9,7 @@ import { registerRememberSkill } from './remember.js'
 import { registerSimplifySkill } from './simplify.js'
 import { registerSkillifySkill } from './skillify.js'
 import { registerStuckSkill } from './stuck.js'
+import { registerLoopSkill } from './loop.js'
 import { registerUpdateConfigSkill } from './updateConfig.js'
 import { registerVerifySkill } from './verify.js'
 
@@ -32,6 +33,7 @@ export function initBundledSkills(): void {
   registerSimplifySkill()
   registerBatchSkill()
   registerStuckSkill()
+  registerLoopSkill()
   if (feature('KAIROS') || feature('KAIROS_DREAM')) {
     /* eslint-disable @typescript-eslint/no-require-imports */
     const { registerDreamSkill } = require('./dream.js')
@@ -44,15 +46,6 @@ export function initBundledSkills(): void {
     /* eslint-enable @typescript-eslint/no-require-imports */
     registerHunterSkill()
   }
-  if (feature('AGENT_TRIGGERS')) {
-    /* eslint-disable @typescript-eslint/no-require-imports */
-    const { registerLoopSkill } = require('./loop.js')
-    /* eslint-enable @typescript-eslint/no-require-imports */
-    // /loop's isEnabled delegates to isKairosCronEnabled() — same lazy
-    // per-invocation pattern as the cron tools. Registered unconditionally;
-    // the skill's own isEnabled callback decides visibility.
-    registerLoopSkill()
-  }
   if (feature('AGENT_TRIGGERS_REMOTE')) {
     /* eslint-disable @typescript-eslint/no-require-imports */
     const {