feat: Reale Jahresbelastung, must-have fixes, fitOut data coverage

Reale Jahresbelastung (Change 6):
- FitOutCostPanel zeigt Jahresmiete + amortisierte Ausbaukosten für alle fitOut-Werte
- FULL/PREMIUM: Ausbau CHF 0 (bezugsfertig), SHELL/BASIC: CRB/BKP-Richtwerte amortisiert über 5 J.
- Match-Card-Chip zeigt geschätzte Investition (orange wenn >100k)
- FitOutInvestment-Typ + calcFitOutInvestment() in fitOutUtils.ts
- BackendAIService + MockAIService mit generateFitOutAdvice (IAIService-Interface)

Must-have Kriterien (Nicht prüfbar Fix):
- ÖV-Anbindung: Minutengrenze aus Freitext extrahiert, gegen publicTransportMinutes geprüft
- Mindestfläche: m²-Wert aus Freitext extrahiert, gegen areaSqm geprüft
- Ausbaugrad: neues Keyword-Rule für FULL/PREMIUM

fitOut-Datenpflege:
- fitOut-Werte zu 32 fehlenden Properties ergänzt (Logistik=SHELL, Standard=BASIC, Modern=FULL)
- MAB-Werte (200/150/250 CHF/m²) zu 3 BASIC-Objekten hinzugefügt

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

src/hooks/useNewListingForm.ts

@@ -45,6 +45,9 @@ export interface NewListingFormState {
   fitOut: string
   parking: string
   ceilingHeight: string
+  mieterausbaubeitrag: string
+  isFlexible: boolean
+  minLettableSqm: string
   // Contact
   contactName: string
   contactEmail: string
@@ -79,6 +82,9 @@ export interface NewListingFormHandlers {
   setFitOut: (v: string) => void
   setParking: (v: string) => void
   setCeilingHeight: (v: string) => void
+  setMieterausbaubeitrag: (v: string) => void
+  setIsFlexible: (v: boolean) => void
+  setMinLettableSqm: (v: string) => void
   setContactName: (v: string) => void
   setContactEmail: (v: string) => void
   setContactPhone: (v: string) => void
@@ -113,6 +119,9 @@ export function useNewListingForm(pre: Prefill): NewListingFormState & NewListin
   const [fitOut,        setFitOut]       = useState('')
   const [parking,       setParking]      = useState('')
   const [ceilingHeight, setCeilingHeight]= useState('')
+  const [mieterausbaubeitrag, setMieterausbaubeitrag] = useState('')
+  const [isFlexible,    setIsFlexible]   = useState(false)
+  const [minLettableSqm, setMinLettableSqm] = useState('')
   const [images,        setImages]       = useState<string[]>([])
   const [imageInput,    setImageInput]   = useState('')
   const [floorPlanUrl,  setFloorPlanUrl] = useState('')
@@ -161,6 +170,7 @@ export function useNewListingForm(pre: Prefill): NewListingFormState & NewListin
         areaSqm: Number(areaSqm), rentPerSqm: Number(rentPerSqm),
         availableFrom, description, softLevels,
         floor, fitOut, parking, ceilingHeight, images, floorPlanUrl,
+        mieterausbaubeitrag, isFlexible, minLettableSqm,
       }),
       {
         onSuccess: () => setCreated(true),
@@ -176,6 +186,7 @@ export function useNewListingForm(pre: Prefill): NewListingFormState & NewListin
     setContactName(''); setContactEmail(''); setContactPhone('')
     setSoftLevels(emptySoftLevels())
     setFloor(''); setFitOut(''); setParking(''); setCeilingHeight('')
+    setMieterausbaubeitrag(''); setIsFlexible(false); setMinLettableSqm('')
     setImages([]); setImageInput(''); setFloorPlanUrl('')
     setAiText(''); setAiApplied(false)
     setCreated(false); setError(null)
@@ -184,7 +195,7 @@ export function useNewListingForm(pre: Prefill): NewListingFormState & NewListin
   return {
     assetType, areaSqm, rentPerSqm, availableFrom, description,
     street, houseNumber, postalCode, city,
-    softLevels, floor, fitOut, parking, ceilingHeight,
+    softLevels, floor, fitOut, parking, ceilingHeight, mieterausbaubeitrag, isFlexible, minLettableSqm,
     contactName, contactEmail, contactPhone,
     images, imageInput, floorPlanUrl, aiText, aiApplied,
     error, created,
@@ -194,7 +205,7 @@ export function useNewListingForm(pre: Prefill): NewListingFormState & NewListin
     setAssetType, setAreaSqm, setRentPerSqm, setAvailableFrom, setDescription,
     setStreet, setHouseNumber, setPostalCode, setCity,
     setSoftLevel,
-    setFloor, setFitOut, setParking, setCeilingHeight,
+    setFloor, setFitOut, setParking, setCeilingHeight, setMieterausbaubeitrag, setIsFlexible, setMinLettableSqm,
     setContactName, setContactEmail, setContactPhone,
     setImageInput, setFloorPlanUrl, setAiText,
     addImage, removeImage,