[split-required] Split remaining 500-680 LOC files (final batch)

website (17 pages + 3 components):
- multiplayer/wizard, middleware/wizard+test-wizard, communication
- builds/wizard, staff-search, voice, sbom/wizard
- foerderantrag, mail/tasks, tools/communication, sbom
- compliance/evidence, uni-crawler, brandbook (already done)
- CollectionsTab, IngestionTab, RiskHeatmap

backend-lehrer (5 files):
- letters_api (641 → 2), certificates_api (636 → 2)
- alerts_agent/db/models (636 → 3)
- llm_gateway/communication_service (614 → 2)
- game/database already done in prior batch

klausur-service (2 files):
- hybrid_vocab_extractor (664 → 2)
- klausur-service/frontend: api.ts (620 → 3), EHUploadWizard (591 → 2)

voice-service (3 files):
- bqas/rag_judge (618 → 3), runner (529 → 2)
- enhanced_task_orchestrator (519 → 2)

studio-v2 (6 files):
- korrektur/[klausurId] (578 → 4), fairness (569 → 2)
- AlertsWizard (552 → 2), OnboardingWizard (513 → 2)
- korrektur/api.ts (506 → 3), geo-lernwelt (501 → 2)

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

website/app/admin/staff-search/_components/useStaffSearch.ts

@@ -0,0 +1,120 @@
+'use client'
+
+import { useState, useEffect, useCallback } from 'react'
+import { StaffMember, Publication, StaffStats, University, EDU_SEARCH_API } from './types'
+
+export function useStaffSearch() {
+  const [searchQuery, setSearchQuery] = useState('')
+  const [staff, setStaff] = useState<StaffMember[]>([])
+  const [selectedStaff, setSelectedStaff] = useState<StaffMember | null>(null)
+  const [publications, setPublications] = useState<Publication[]>([])
+  const [stats, setStats] = useState<StaffStats | null>(null)
+  const [universities, setUniversities] = useState<University[]>([])
+  const [loading, setLoading] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+
+  // Filters
+  const [filterState, setFilterState] = useState('')
+  const [filterUniType, setFilterUniType] = useState('')
+  const [filterPositionType, setFilterPositionType] = useState('')
+  const [filterProfessorsOnly, setFilterProfessorsOnly] = useState(false)
+
+  // Pagination
+  const [total, setTotal] = useState(0)
+  const [offset, setOffset] = useState(0)
+  const limit = 20
+
+  useEffect(() => {
+    fetchStats()
+    fetchUniversities()
+  }, [])
+
+  const fetchStats = async () => {
+    try {
+      const res = await fetch(`${EDU_SEARCH_API}/api/v1/staff/stats`)
+      if (res.ok) {
+        const data = await res.json()
+        setStats(data)
+      }
+    } catch {
+      // Stats not critical
+    }
+  }
+
+  const fetchUniversities = async () => {
+    try {
+      const res = await fetch(`${EDU_SEARCH_API}/api/v1/universities`)
+      if (res.ok) {
+        const data = await res.json()
+        setUniversities(data.universities || [])
+      }
+    } catch {
+      // Universities not critical
+    }
+  }
+
+  const searchStaff = useCallback(async (newOffset = 0) => {
+    setLoading(true)
+    setError(null)
+
+    try {
+      const params = new URLSearchParams()
+      if (searchQuery) params.append('q', searchQuery)
+      if (filterState) params.append('state', filterState)
+      if (filterUniType) params.append('uni_type', filterUniType)
+      if (filterPositionType) params.append('position_type', filterPositionType)
+      if (filterProfessorsOnly) params.append('is_professor', 'true')
+      params.append('limit', limit.toString())
+      params.append('offset', newOffset.toString())
+
+      const res = await fetch(`${EDU_SEARCH_API}/api/v1/staff/search?${params}`)
+      if (!res.ok) throw new Error('Search failed')
+
+      const data = await res.json()
+      setStaff(data.staff || [])
+      setTotal(data.total || 0)
+      setOffset(newOffset)
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Search failed')
+      setStaff([])
+    } finally {
+      setLoading(false)
+    }
+  }, [searchQuery, filterState, filterUniType, filterPositionType, filterProfessorsOnly])
+
+  useEffect(() => {
+    const timer = setTimeout(() => {
+      searchStaff(0)
+    }, 300)
+    return () => clearTimeout(timer)
+  }, [searchStaff])
+
+  const fetchPublications = async (staffId: string) => {
+    try {
+      const res = await fetch(`${EDU_SEARCH_API}/api/v1/staff/${staffId}/publications`)
+      if (res.ok) {
+        const data = await res.json()
+        setPublications(data.publications || [])
+      }
+    } catch {
+      setPublications([])
+    }
+  }
+
+  const handleSelectStaff = (member: StaffMember) => {
+    setSelectedStaff(member)
+    fetchPublications(member.id)
+  }
+
+  return {
+    searchQuery, setSearchQuery,
+    staff, selectedStaff, publications, stats,
+    loading, error,
+    filterState, setFilterState,
+    filterUniType, setFilterUniType,
+    filterPositionType, setFilterPositionType,
+    filterProfessorsOnly, setFilterProfessorsOnly,
+    total, offset, limit,
+    searchStaff, handleSelectStaff,
+  }
+}