feat(PBI-59): useJobsRealtime hook met SSE-verbinding en store-updates

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

hooks/use-jobs-realtime.ts

@@ -0,0 +1,79 @@
+import { useEffect } from 'react'
+import { useJobsStore } from '@/stores/jobs-store'
+import type { ClaudeJobStatus } from '@prisma/client'
+
+interface JobStatusPayload {
+  job_id: string
+  kind?: string
+  status: string
+  task_id?: string | null
+  idea_id?: string | null
+  sprint_run_id?: string | null
+  branch?: string
+  pushed_at?: string
+  pr_url?: string
+  verify_result?: string
+  summary?: string
+  error?: string
+}
+
+export default function useJobsRealtime() {
+  const initJobs = useJobsStore(s => s.initJobs)
+  const upsertJob = useJobsStore(s => s.upsertJob)
+
+  useEffect(() => {
+    let es: EventSource | null = null
+    let reconnectTimer: ReturnType<typeof setTimeout> | null = null
+    let active = true
+
+    function connect() {
+      if (!active) return
+
+      es = new EventSource('/api/realtime/jobs')
+
+      es.addEventListener('jobs_initial', (event) => {
+        try {
+          const jobs = JSON.parse(event.data)
+          if (Array.isArray(jobs)) {
+            initJobs(jobs, useJobsStore.getState().doneJobs)
+          }
+        } catch {
+          // malformed JSON
+        }
+      })
+
+      es.addEventListener('message', (event) => {
+        try {
+          const payload = JSON.parse(event.data) as JobStatusPayload
+          if (!payload.job_id) return
+          upsertJob({
+            id: payload.job_id,
+            status: payload.status as ClaudeJobStatus,
+            branch: payload.branch ?? null,
+            prUrl: payload.pr_url ?? null,
+            error: payload.error ?? null,
+            summary: payload.summary ?? null,
+          })
+        } catch {
+          // malformed JSON
+        }
+      })
+
+      es.onerror = () => {
+        es?.close()
+        es = null
+        if (active) {
+          reconnectTimer = setTimeout(connect, 3000)
+        }
+      }
+    }
+
+    connect()
+
+    return () => {
+      active = false
+      if (reconnectTimer) clearTimeout(reconnectTimer)
+      es?.close()
+    }
+  }, [initJobs, upsertJob])
+}