feat: add Structure step to Kombi mode in OCR Overlay page

Insert the Struktur detection step between Zuschneiden and
PP-OCRv5+Tesseract in the Kombi pipeline on /ai/ocr-overlay.

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

admin-lehrer/app/(admin)/ai/ocr-overlay/page.tsx

@@ -7,6 +7,7 @@ import { StepOrientation } from '@/components/ocr-pipeline/StepOrientation'
 import { StepDeskew } from '@/components/ocr-pipeline/StepDeskew'
 import { StepDewarp } from '@/components/ocr-pipeline/StepDewarp'
 import { StepCrop } from '@/components/ocr-pipeline/StepCrop'
+import { StepStructureDetection } from '@/components/ocr-pipeline/StepStructureDetection'
 import { StepRowDetection } from '@/components/ocr-pipeline/StepRowDetection'
 import { StepWordRecognition } from '@/components/ocr-pipeline/StepWordRecognition'
 import { OverlayReconstruction } from '@/components/ocr-overlay/OverlayReconstruction'
@@ -74,9 +75,13 @@ export default function OcrOverlayPage() {
         const baseSteps = isKombi ? KOMBI_STEPS : PADDLE_DIRECT_STEPS
         setMode(m)
 
-        // For Kombi: if grid_editor_result exists, jump to grid editor step (5)
+        // For Kombi: if grid_editor_result exists, jump to grid editor step (6)
+        // If word_result exists but no grid, jump to grid editor (6)
+        // If structure_result exists, jump to kombi step (5)
         const hasGrid = isKombi && data.grid_editor_result
-        const activeStep = hasGrid ? 5 : 4
+        const hasWords = isKombi && data.word_result
+        const hasStructure = isKombi && data.structure_result
+        const activeStep = hasGrid ? 6 : hasWords ? 6 : hasStructure ? 5 : 4
         setSteps(
           baseSteps.map((s, i) => ({
             ...s,
@@ -246,6 +251,11 @@ export default function OcrOverlayPage() {
         case 3:
           return <StepCrop sessionId={sessionId} onNext={handleNext} />
         case 4:
+          if (mode === 'kombi') {
+            return <StepStructureDetection sessionId={sessionId} onNext={handleNext} />
+          }
+          return <PaddleDirectStep sessionId={sessionId} onNext={handleNext} />
+        case 5:
           return mode === 'kombi' ? (
             <PaddleDirectStep
               sessionId={sessionId}
@@ -258,10 +268,8 @@ export default function OcrOverlayPage() {
               runningLabel="PP-OCRv5 + Tesseract laufen..."
               engineKey="kombi"
             />
-          ) : (
-            <PaddleDirectStep sessionId={sessionId} onNext={handleNext} />
-          )
-        case 5:
+          ) : null
+        case 6:
           return mode === 'kombi' ? (
             <GridEditor sessionId={sessionId} onNext={handleNext} />
           ) : null
@@ -521,7 +529,7 @@ export default function OcrOverlayPage() {
               : 'text-gray-500 dark:text-gray-400 hover:text-gray-700 dark:hover:text-gray-300'
           }`}
         >
-          Kombi (6 Schritte)
+          Kombi (7 Schritte)
         </button>
       </div>
 

admin-lehrer/app/(admin)/ai/ocr-overlay/types.ts

@@ -69,6 +69,7 @@ export const KOMBI_STEPS: PipelineStep[] = [
   { id: 'deskew', name: 'Begradigung', icon: '📐', status: 'pending' },
   { id: 'dewarp', name: 'Entzerrung', icon: '🔧', status: 'pending' },
   { id: 'crop', name: 'Zuschneiden', icon: '✂️', status: 'pending' },
+  { id: 'structure', name: 'Struktur', icon: '🔍', status: 'pending' },
   { id: 'kombi', name: 'PP-OCRv5 + Tesseract', icon: '🔀', status: 'pending' },
   { id: 'grid-editor', name: 'Tabelle', icon: '📊', status: 'pending' },
 ]