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/cli/print.ts

@@ -362,15 +362,9 @@ const proactiveModule =
   feature('PROACTIVE') || feature('KAIROS')
     ? (require('../proactive/index.js') as typeof import('../proactive/index.js'))
     : null
-const cronSchedulerModule = feature('AGENT_TRIGGERS')
-  ? (require('../utils/cronScheduler.js') as typeof import('../utils/cronScheduler.js'))
-  : null
-const cronJitterConfigModule = feature('AGENT_TRIGGERS')
-  ? (require('../utils/cronJitterConfig.js') as typeof import('../utils/cronJitterConfig.js'))
-  : null
-const cronGate = feature('AGENT_TRIGGERS')
-  ? (require('../tools/ScheduleCronTool/prompt.js') as typeof import('../tools/ScheduleCronTool/prompt.js'))
-  : null
+const cronSchedulerModule = require('../utils/cronScheduler.js') as typeof import('../utils/cronScheduler.js')
+const cronJitterConfigModule = require('../utils/cronJitterConfig.js') as typeof import('../utils/cronJitterConfig.js')
+const cronGate = require('../tools/ScheduleCronTool/prompt.js') as typeof import('../tools/ScheduleCronTool/prompt.js')
 const extractMemoriesModule = feature('EXTRACT_MEMORIES')
   ? (require('../services/extractMemories/extractMemories.js') as typeof import('../services/extractMemories/extractMemories.js'))
   : null
@@ -2706,9 +2700,7 @@ function runHeadlessStreaming(
   let cronScheduler: import('../utils/cronScheduler.js').CronScheduler | null =
     null
   if (
-    feature('AGENT_TRIGGERS') &&
-    cronSchedulerModule &&
-    cronGate?.isKairosCronEnabled()
+    cronGate.isKairosCronEnabled()
   ) {
     cronScheduler = cronSchedulerModule.createCronScheduler({
       onFire: prompt => {