refactor(arch): eliminate direct service calls in components — route all through hooks

New hook files:
- useAuth.ts: useLogin, useSwitchDemoRole, useSwitchOrganization
- useAI.ts: useParseNeed, useGenerateOfferEmail, useGenerateDecisionBrief, useParseListingText
- useAssistant.ts: useAssistantSuggestions (useQuery), useAssistantAnswer (useMutation)
- useOfferReport.ts: useOfferReportByInquiry, useCreateOfferReport, useUpdateOfferReport, useGenerateOfferReportPdf
- useInquiryReport.ts: useInquiryReportByInquiry, useCreateInquiryReport, useUpdateInquiryReport, useFinalizeInquiryReport
- useMarketReport.ts: useMarketReport
- useWeighting.ts: useDefaultWeights (synchronous wrapper)
- useUnitMatches.ts: useUnitMatchesMap, useUnitBundle, useBundleMatches (useMemo wrappers)

Extended hooks: useProperties (add update/create/remove mutations),
useNeeds (add useCreateNeed), useMatches (add useNeedMatchesForProperty,
useAdditionalMatchesForInquiry), useReviewQueue (add useCreateReviewTask)

Updated 21 components/pages: all direct service imports replaced with hooks.
Deliberate exception: getRecommendedActions in DataQuality.tsx (pure sync utility, no provider access).

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

src/components/anfragencenter/OfferCreationWizard.tsx

@@ -6,7 +6,7 @@ import {
 } from '@mui/material'
 import { Plus, Trash2, X } from 'lucide-react'
 import type { OfferReportDraft, ViewingAppointmentOption } from '../../domain/offerReport'
-import { offerReportService } from '../../services/offerReportService'
+import { useCreateOfferReport, useUpdateOfferReport, useGenerateOfferReportPdf } from '../../hooks/useOfferReport'
 import { usePropertyById } from '../../hooks/useProperties'
 import { useToastStore } from '../../stores/toastStore'
 import { OfferWizardPdfStep } from './OfferWizardPdfStep'
@@ -32,10 +32,16 @@ export function OfferCreationWizard({ inquiryId, propertyId, tenantName, onClose
   const showToast = useToastStore(s => s.showToast)
   const timerRef = useRef<ReturnType<typeof setInterval> | null>(null)
 
+  const createOfferReport = useCreateOfferReport()
+  const updateOfferReport = useUpdateOfferReport()
+  const generatePdf = useGenerateOfferReportPdf()
+
   useEffect(() => {
-    offerReportService
-      .create(inquiryId, propertyId, tenantName, property?.title ?? '')
-      .then(d => { setDraft(d); setLoading(false) })
+    createOfferReport.mutate(
+      { inquiryId, propertyId, tenantName, propertyTitle: property?.title ?? '' },
+      { onSuccess: (d) => { setDraft(d); setLoading(false) } },
+    )
+  // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [inquiryId, propertyId, tenantName, property?.title])
 
   useEffect(() => () => { if (timerRef.current) clearInterval(timerRef.current) }, [])
@@ -70,28 +76,31 @@ export function OfferCreationWizard({ inquiryId, propertyId, tenantName, onClose
     })
   }
 
-  const handleGeneratePdf = async () => {
+  const handleGeneratePdf = () => {
     if (!draft) return
-    await offerReportService.update(draft.id, {
-      editableFields: draft.editableFields,
-      viewingAppointments: draft.viewingAppointments,
-    })
-    setStep(3)
-    setGenerating(true)
-    setProgress(0)
-    let p = 0
-    timerRef.current = setInterval(() => {
-      p += Math.random() * 18 + 8
-      if (p >= 100) {
-        clearInterval(timerRef.current!)
-        setProgress(100)
-        setGenerating(false)
-        setReady(true)
-        offerReportService.generatePdf(draft.id).then(setDraft)
-      } else {
-        setProgress(Math.min(100, p))
-      }
-    }, 200)
+    updateOfferReport.mutate(
+      { draftId: draft.id, data: { editableFields: draft.editableFields, viewingAppointments: draft.viewingAppointments } },
+      {
+        onSuccess: () => {
+          setStep(3)
+          setGenerating(true)
+          setProgress(0)
+          let p = 0
+          timerRef.current = setInterval(() => {
+            p += Math.random() * 18 + 8
+            if (p >= 100) {
+              clearInterval(timerRef.current!)
+              setProgress(100)
+              setGenerating(false)
+              setReady(true)
+              generatePdf.mutate(draft.id, { onSuccess: setDraft })
+            } else {
+              setProgress(Math.min(100, p))
+            }
+          }, 200)
+        },
+      },
+    )
   }
 
   return (