watch, dont poll

apps/cron/20260201-000000/index.tsx

@@ -9,7 +9,7 @@ import { SCHEDULES, type CronJob } from './lib/schedules'
 import type { Child } from 'hono/jsx'
 import { join } from 'path'
 import { mkdir, writeFile } from 'fs/promises'
-import { existsSync } from 'fs'
+import { existsSync, watch } from 'fs'
 
 const APPS_DIR = process.env.APPS_DIR!
 
@@ -372,8 +372,10 @@ async function init() {
   }
 }
 
-// Re-discover every 60s
-setInterval(async () => {
+// Watch for cron file changes
+let debounceTimer: Timer | null = null
+
+async function rediscover() {
   const jobs = await discoverCronJobs()
   const existing = getAllJobs()
 
@@ -403,7 +405,15 @@ setInterval(async () => {
   }
 
   setJobs(jobs)
-}, 60000)
+}
+
+watch(APPS_DIR, { recursive: true }, (_event, filename) => {
+  if (!filename?.includes('/cron/') && !filename?.includes('\\cron\\')) return
+  if (!filename.endsWith('.ts')) return
+
+  if (debounceTimer) clearTimeout(debounceTimer)
+  debounceTimer = setTimeout(rediscover, 100)
+})
 
 init()