feat(worksheet-editor): Add OCR import panel for grid analysis data

Add OCRImportPanel component and ocr-integration utilities to import
OCR-analyzed data from the grid detection service into the worksheet editor.

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

studio-v2/app/worksheet-editor/page.tsx

@@ -15,6 +15,7 @@ import { ExportPanel } from '@/components/worksheet-editor/ExportPanel'
 import { AIPromptBar } from '@/components/worksheet-editor/AIPromptBar'
 import { DocumentImporter } from '@/components/worksheet-editor/DocumentImporter'
 import { CleanupPanel } from '@/components/worksheet-editor/CleanupPanel'
+import { OCRImportPanel } from '@/components/worksheet-editor/OCRImportPanel'
 import { ThemeToggle } from '@/components/ThemeToggle'
 import { LanguageDropdown } from '@/components/LanguageDropdown'
 
@@ -51,6 +52,7 @@ function WorksheetEditorContent() {
   const [isExportPanelOpen, setIsExportPanelOpen] = useState(false)
   const [isDocumentImporterOpen, setIsDocumentImporterOpen] = useState(false)
   const [isCleanupPanelOpen, setIsCleanupPanelOpen] = useState(false)
+  const [isOCRImportOpen, setIsOCRImportOpen] = useState(false)
   const [isDocumentListOpen, setIsDocumentListOpen] = useState(false)
   const [savedWorksheets, setSavedWorksheets] = useState<SavedWorksheet[]>([])
   const [isSaving, setIsSaving] = useState(false)
@@ -300,6 +302,7 @@ function WorksheetEditorContent() {
               onOpenAIGenerator={() => setIsAIGeneratorOpen(true)}
               onOpenDocumentImporter={() => setIsDocumentImporterOpen(true)}
               onOpenCleanupPanel={() => setIsCleanupPanelOpen(true)}
+              onOpenOCRImport={() => setIsOCRImportOpen(true)}
               className="h-full"
             />
           </div>
@@ -471,6 +474,11 @@ function WorksheetEditorContent() {
         isOpen={isCleanupPanelOpen}
         onClose={() => setIsCleanupPanelOpen(false)}
       />
+
+      <OCRImportPanel
+        isOpen={isOCRImportOpen}
+        onClose={() => setIsOCRImportOpen(false)}
+      />
     </div>
   )
 }