StepAnsicht: fix row filtering for partial-width boxes

Content rows were incorrectly filtered out when their Y overlapped
with a box, even if the box only covered the right half of the page.
Now checks both Y AND X overlap — rows are only excluded if they
start within the box's horizontal range.

Fixes: rows next to Box 2 (lend, coconut, taste) were missing from
reconstruction because Box 2 (x=871, w=525) only covers the right
side, but left-side content rows at x≈148 were being filtered.

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

admin-lehrer/components/ocr-kombi/StepAnsicht.tsx

@@ -110,8 +110,19 @@ export function StepAnsicht({ sessionId, onNext }: StepAnsichtProps) {
         boxIdx++
       }
 
-      // Skip rows that fall inside a box boundary
-      const insideBox = boxBounds.some((bb) => ry >= bb.yStart && ry <= bb.yEnd)
+      // Skip rows only if they fall FULLY inside a box (both Y and X overlap).
+      // Small boxes (e.g. on the right half) don't cover left-side content rows.
+      const rowCells = contentZone!.cells.filter((c) => c.row_index === row.index)
+      const rowXMin = rowCells.length > 0
+        ? Math.min(...rowCells.map((c) => c.bbox_px?.x ?? contentZone!.bbox_px.x))
+        : contentZone!.bbox_px.x
+      const insideBox = boxBounds.some((bb) => {
+        if (ry < bb.yStart || ry > bb.yEnd) return false
+        // Check horizontal overlap: row must be mostly inside box x-range
+        const boxXMin = bb.zone.bbox_px.x
+        const boxXMax = boxXMin + bb.zone.bbox_px.w
+        return rowXMin >= boxXMin - 20 && rowXMin <= boxXMax
+      })
       if (!insideBox) {
         currentRows.push(row)
       }