fix(compliance-check): resume polling after navigation away

Save active check_id to localStorage so polling resumes when the user
navigates away via sidebar and comes back. Same pattern as scan tab.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

admin-compliance/app/sdk/agent/_components/ComplianceCheckTab.tsx

@@ -29,6 +29,7 @@ type DocsState = Record<DocTypeId, DocState>
 const STORAGE_KEY_STATE = 'compliance-check-state'
 const STORAGE_KEY_RESULTS = 'compliance-check-results'
 const STORAGE_KEY_HISTORY = 'compliance-check-history'
+const STORAGE_KEY_CHECK_ID = 'compliance-check-active-id'
 
 function emptyDocState(): DocState {
   return { url: '', text: '', loading: false, error: null }
@@ -77,6 +78,9 @@ export function ComplianceCheckTab() {
     try { const s = localStorage.getItem(STORAGE_KEY_RESULTS); return s ? JSON.parse(s) : null } catch { return null }
   })
   const [error, setError] = useState<string | null>(null)
+  const [activeCheckId, setActiveCheckId] = useState<string>(() =>
+    typeof window !== 'undefined' ? localStorage.getItem(STORAGE_KEY_CHECK_ID) || '' : ''
+  )
   const [history, setHistory] = useState<HistoryEntry[]>(() => {
     if (typeof window === 'undefined') return []
     try { return JSON.parse(localStorage.getItem(STORAGE_KEY_HISTORY) || '[]') } catch { return [] }
@@ -91,6 +95,39 @@ export function ComplianceCheckTab() {
     try { localStorage.setItem(STORAGE_KEY_STATE, JSON.stringify(toSave)) } catch { /* quota */ }
   }, [docs])
 
+  // Resume polling if check was in progress when navigating away
+  React.useEffect(() => {
+    if (!activeCheckId || results) return
+    let cancelled = false
+    setLoading(true)
+    setProgress('Pruefung laeuft noch...')
+    const poll = async () => {
+      while (!cancelled) {
+        await new Promise(r => setTimeout(r, 3000))
+        try {
+          const res = await fetch(`/api/sdk/v1/agent/compliance-check?check_id=${activeCheckId}`)
+          if (!res.ok) continue
+          const data = await res.json()
+          if (data.progress) setProgress(data.progress)
+          if (data.status === 'completed' && data.result) {
+            setResults(data.result); setProgress(''); setLoading(false)
+            localStorage.setItem(STORAGE_KEY_RESULTS, JSON.stringify(data.result))
+            localStorage.removeItem(STORAGE_KEY_CHECK_ID); setActiveCheckId('')
+            return
+          }
+          if (data.status === 'failed' || data.status === 'not_found') {
+            if (data.status === 'failed') setError(data.error || 'Pruefung fehlgeschlagen')
+            setProgress(''); setLoading(false)
+            localStorage.removeItem(STORAGE_KEY_CHECK_ID); setActiveCheckId('')
+            return
+          }
+        } catch { /* retry */ }
+      }
+    }
+    poll()
+    return () => { cancelled = true }
+  }, []) // eslint-disable-line react-hooks/exhaustive-deps
+
   const updateDoc = useCallback((docType: DocTypeId, patch: Partial<DocState>) => {
     setDocs(prev => ({ ...prev, [docType]: { ...prev[docType], ...patch } }))
   }, [])
@@ -162,6 +199,8 @@ export function ComplianceCheckTab() {
       if (!startRes.ok) throw new Error(`Pruefung konnte nicht gestartet werden: ${startRes.status}`)
       const { check_id } = await startRes.json()
       if (!check_id) throw new Error('Keine Check-ID erhalten')
+      setActiveCheckId(check_id)
+      localStorage.setItem(STORAGE_KEY_CHECK_ID, check_id)
 
       // Poll for results
       let attempts = 0
@@ -175,6 +214,7 @@ export function ComplianceCheckTab() {
           setResults(pollData.result)
           setProgress('')
           localStorage.setItem(STORAGE_KEY_RESULTS, JSON.stringify(pollData.result))
+          localStorage.removeItem(STORAGE_KEY_CHECK_ID); setActiveCheckId('')
 
           const resultKey = `compliance-check-result-${Date.now()}`
           try { localStorage.setItem(resultKey, JSON.stringify(pollData.result)) } catch { /* quota */ }
@@ -190,11 +230,15 @@ export function ComplianceCheckTab() {
           break
         }
         if (pollData.status === 'failed') {
+          localStorage.removeItem(STORAGE_KEY_CHECK_ID); setActiveCheckId('')
           throw new Error(pollData.error || 'Pruefung fehlgeschlagen')
         }
         attempts++
       }
-      if (attempts >= 120) throw new Error('Zeitlimit ueberschritten')
+      if (attempts >= 120) {
+        localStorage.removeItem(STORAGE_KEY_CHECK_ID); setActiveCheckId('')
+        throw new Error('Zeitlimit ueberschritten')
+      }
     } catch (e) {
       setError(e instanceof Error ? e.message : 'Unbekannter Fehler')
       setProgress('')