recruiter: add boss auto browse/chat flows, webhook, and candidate tables

- Add recruiter-side automation core and run-core entry
- Extend sqlite-plugin with candidate info + contact logs
- Add UI routes/pages, IPC handlers, progress + log panel
- Document current status and plans under plan/

Made-with: Cursor

packages/utils/sleep.mjs

@@ -4,6 +4,8 @@ export function sleep (t) {
   })
 }
 
-export function sleepWithRandomDelay (base) {
-  return sleep(base + Math.random()*1000)
+export function sleepWithRandomDelay (min, max) {
+  const lo = min ?? 0
+  const hi = max ?? (lo + 1000)
+  return sleep(lo + Math.random() * (hi - lo))
 }