diff --git a/klausur-service/backend/cv_cell_grid_build.py b/klausur-service/backend/ocr/cell_grid/build.py
similarity index 100%
rename from klausur-service/backend/cv_cell_grid_build.py
rename to klausur-service/backend/ocr/cell_grid/build.py
diff --git a/klausur-service/backend/cv_cell_grid.py b/klausur-service/backend/ocr/cell_grid/cell_grid.py
similarity index 100%
rename from klausur-service/backend/cv_cell_grid.py
rename to klausur-service/backend/ocr/cell_grid/cell_grid.py
diff --git a/klausur-service/backend/cv_cell_grid_helpers.py b/klausur-service/backend/ocr/cell_grid/helpers.py
similarity index 100%
rename from klausur-service/backend/cv_cell_grid_helpers.py
rename to klausur-service/backend/ocr/cell_grid/helpers.py
diff --git a/klausur-service/backend/cv_cell_grid_legacy.py b/klausur-service/backend/ocr/cell_grid/legacy.py
similarity index 100%
rename from klausur-service/backend/cv_cell_grid_legacy.py
rename to klausur-service/backend/ocr/cell_grid/legacy.py
diff --git a/klausur-service/backend/cv_cell_grid_merge.py b/klausur-service/backend/ocr/cell_grid/merge.py
similarity index 100%
rename from klausur-service/backend/cv_cell_grid_merge.py
rename to klausur-service/backend/ocr/cell_grid/merge.py
diff --git a/klausur-service/backend/cv_cell_grid_streaming.py b/klausur-service/backend/ocr/cell_grid/streaming.py
similarity index 100%
rename from klausur-service/backend/cv_cell_grid_streaming.py
rename to klausur-service/backend/ocr/cell_grid/streaming.py
diff --git a/klausur-service/backend/cv_cell_grid_vocab.py b/klausur-service/backend/ocr/cell_grid/vocab.py
similarity index 100%
rename from klausur-service/backend/cv_cell_grid_vocab.py
rename to klausur-service/backend/ocr/cell_grid/vocab.py
diff --git a/klausur-service/backend/cv_box_detect.py b/klausur-service/backend/ocr/detect/box_detect.py
similarity index 100%
rename from klausur-service/backend/cv_box_detect.py
rename to klausur-service/backend/ocr/detect/box_detect.py
diff --git a/klausur-service/backend/cv_box_layout.py b/klausur-service/backend/ocr/detect/box_layout.py
similarity index 100%
rename from klausur-service/backend/cv_box_layout.py
rename to klausur-service/backend/ocr/detect/box_layout.py
diff --git a/klausur-service/backend/cv_color_detect.py b/klausur-service/backend/ocr/detect/color_detect.py
similarity index 100%
rename from klausur-service/backend/cv_color_detect.py
rename to klausur-service/backend/ocr/detect/color_detect.py
diff --git a/klausur-service/backend/cv_doclayout_detect.py b/klausur-service/backend/ocr/detect/doclayout_detect.py
similarity index 100%
rename from klausur-service/backend/cv_doclayout_detect.py
rename to klausur-service/backend/ocr/detect/doclayout_detect.py
diff --git a/klausur-service/backend/cv_graphic_detect.py b/klausur-service/backend/ocr/detect/graphic_detect.py
similarity index 100%
rename from klausur-service/backend/cv_graphic_detect.py
rename to klausur-service/backend/ocr/detect/graphic_detect.py
diff --git a/klausur-service/backend/cv_syllable_core.py b/klausur-service/backend/ocr/detect/syllable/core.py
similarity index 100%
rename from klausur-service/backend/cv_syllable_core.py
rename to klausur-service/backend/ocr/detect/syllable/core.py
diff --git a/klausur-service/backend/cv_syllable_detect.py b/klausur-service/backend/ocr/detect/syllable/detect.py
similarity index 100%
rename from klausur-service/backend/cv_syllable_detect.py
rename to klausur-service/backend/ocr/detect/syllable/detect.py
diff --git a/klausur-service/backend/cv_syllable_merge.py b/klausur-service/backend/ocr/detect/syllable/merge.py
similarity index 100%
rename from klausur-service/backend/cv_syllable_merge.py
rename to klausur-service/backend/ocr/detect/syllable/merge.py
diff --git a/klausur-service/backend/cv_ocr_cell_filter.py b/klausur-service/backend/ocr/engines/cell_filter.py
similarity index 100%
rename from klausur-service/backend/cv_ocr_cell_filter.py
rename to klausur-service/backend/ocr/engines/cell_filter.py
diff --git a/klausur-service/backend/cv_ocr_cell_phonetics.py b/klausur-service/backend/ocr/engines/cell_phonetics.py
similarity index 100%
rename from klausur-service/backend/cv_ocr_cell_phonetics.py
rename to klausur-service/backend/ocr/engines/cell_phonetics.py
diff --git a/klausur-service/backend/cv_ocr_engines.py b/klausur-service/backend/ocr/engines/engines.py
similarity index 100%
rename from klausur-service/backend/cv_ocr_engines.py
rename to klausur-service/backend/ocr/engines/engines.py
diff --git a/klausur-service/backend/cv_ocr_ipa_lookup.py b/klausur-service/backend/ocr/engines/ipa_lookup.py
similarity index 100%
rename from klausur-service/backend/cv_ocr_ipa_lookup.py
rename to klausur-service/backend/ocr/engines/ipa_lookup.py
diff --git a/klausur-service/backend/cv_ocr_ipa_repair.py b/klausur-service/backend/ocr/engines/ipa_repair.py
similarity index 100%
rename from klausur-service/backend/cv_ocr_ipa_repair.py
rename to klausur-service/backend/ocr/engines/ipa_repair.py
diff --git a/klausur-service/backend/cv_ocr_vocab_postprocess.py b/klausur-service/backend/ocr/engines/vocab_postprocess.py
similarity index 100%
rename from klausur-service/backend/cv_ocr_vocab_postprocess.py
rename to klausur-service/backend/ocr/engines/vocab_postprocess.py
diff --git a/klausur-service/backend/cv_ocr_word_assembly.py b/klausur-service/backend/ocr/engines/word_assembly.py
similarity index 100%
rename from klausur-service/backend/cv_ocr_word_assembly.py
rename to klausur-service/backend/ocr/engines/word_assembly.py
diff --git a/klausur-service/backend/cv_gutter_repair_core.py b/klausur-service/backend/ocr/gutter/core.py
similarity index 100%
rename from klausur-service/backend/cv_gutter_repair_core.py
rename to klausur-service/backend/ocr/gutter/core.py
diff --git a/klausur-service/backend/cv_gutter_repair_grid.py b/klausur-service/backend/ocr/gutter/grid.py
similarity index 100%
rename from klausur-service/backend/cv_gutter_repair_grid.py
rename to klausur-service/backend/ocr/gutter/grid.py
diff --git a/klausur-service/backend/cv_gutter_repair.py b/klausur-service/backend/ocr/gutter/repair.py
similarity index 100%
rename from klausur-service/backend/cv_gutter_repair.py
rename to klausur-service/backend/ocr/gutter/repair.py
diff --git a/klausur-service/backend/ocr_image_enhance.py b/klausur-service/backend/ocr/image_enhance.py
similarity index 100%
rename from klausur-service/backend/ocr_image_enhance.py
rename to klausur-service/backend/ocr/image_enhance.py
diff --git a/klausur-service/backend/cv_ipa_german.py b/klausur-service/backend/ocr/ipa_german.py
similarity index 100%
rename from klausur-service/backend/cv_ipa_german.py
rename to klausur-service/backend/ocr/ipa_german.py
diff --git a/klausur-service/backend/cv_layout_analyze.py b/klausur-service/backend/ocr/layout/analyze.py
similarity index 100%
rename from klausur-service/backend/cv_layout_analyze.py
rename to klausur-service/backend/ocr/layout/analyze.py
diff --git a/klausur-service/backend/cv_layout_classify.py b/klausur-service/backend/ocr/layout/classify.py
similarity index 100%
rename from klausur-service/backend/cv_layout_classify.py
rename to klausur-service/backend/ocr/layout/classify.py
diff --git a/klausur-service/backend/cv_layout_classify_position.py b/klausur-service/backend/ocr/layout/classify_position.py
similarity index 100%
rename from klausur-service/backend/cv_layout_classify_position.py
rename to klausur-service/backend/ocr/layout/classify_position.py
diff --git a/klausur-service/backend/cv_layout_column_refine.py b/klausur-service/backend/ocr/layout/column_refine.py
similarity index 100%
rename from klausur-service/backend/cv_layout_column_refine.py
rename to klausur-service/backend/ocr/layout/column_refine.py
diff --git a/klausur-service/backend/cv_layout_columns.py b/klausur-service/backend/ocr/layout/columns.py
similarity index 100%
rename from klausur-service/backend/cv_layout_columns.py
rename to klausur-service/backend/ocr/layout/columns.py
diff --git a/klausur-service/backend/cv_layout_detection.py b/klausur-service/backend/ocr/layout/detection.py
similarity index 100%
rename from klausur-service/backend/cv_layout_detection.py
rename to klausur-service/backend/ocr/layout/detection.py
diff --git a/klausur-service/backend/cv_layout.py b/klausur-service/backend/ocr/layout/layout.py
similarity index 100%
rename from klausur-service/backend/cv_layout.py
rename to klausur-service/backend/ocr/layout/layout.py
diff --git a/klausur-service/backend/cv_layout_row_regularize.py b/klausur-service/backend/ocr/layout/row_regularize.py
similarity index 100%
rename from klausur-service/backend/cv_layout_row_regularize.py
rename to klausur-service/backend/ocr/layout/row_regularize.py
diff --git a/klausur-service/backend/cv_layout_rows.py b/klausur-service/backend/ocr/layout/rows.py
similarity index 100%
rename from klausur-service/backend/cv_layout_rows.py
rename to klausur-service/backend/ocr/layout/rows.py
diff --git a/klausur-service/backend/cv_layout_scoring.py b/klausur-service/backend/ocr/layout/scoring.py
similarity index 100%
rename from klausur-service/backend/cv_layout_scoring.py
rename to klausur-service/backend/ocr/layout/scoring.py
diff --git a/klausur-service/backend/cv_vocab_pipeline.py b/klausur-service/backend/ocr/pipeline.py
similarity index 100%
rename from klausur-service/backend/cv_vocab_pipeline.py
rename to klausur-service/backend/ocr/pipeline.py
diff --git a/klausur-service/backend/cv_preprocessing_deskew.py b/klausur-service/backend/ocr/preprocessing/deskew.py
similarity index 100%
rename from klausur-service/backend/cv_preprocessing_deskew.py
rename to klausur-service/backend/ocr/preprocessing/deskew.py
diff --git a/klausur-service/backend/cv_preprocessing_dewarp.py b/klausur-service/backend/ocr/preprocessing/dewarp.py
similarity index 100%
rename from klausur-service/backend/cv_preprocessing_dewarp.py
rename to klausur-service/backend/ocr/preprocessing/dewarp.py
diff --git a/klausur-service/backend/cv_preprocessing.py b/klausur-service/backend/ocr/preprocessing/preprocessing.py
similarity index 100%
rename from klausur-service/backend/cv_preprocessing.py
rename to klausur-service/backend/ocr/preprocessing/preprocessing.py
diff --git a/klausur-service/backend/cv_review_llm.py b/klausur-service/backend/ocr/review/llm.py
similarity index 100%
rename from klausur-service/backend/cv_review_llm.py
rename to klausur-service/backend/ocr/review/llm.py
diff --git a/klausur-service/backend/cv_review_pipeline.py b/klausur-service/backend/ocr/review/pipeline.py
similarity index 100%
rename from klausur-service/backend/cv_review_pipeline.py
rename to klausur-service/backend/ocr/review/pipeline.py
diff --git a/klausur-service/backend/cv_review.py b/klausur-service/backend/ocr/review/review.py
similarity index 100%
rename from klausur-service/backend/cv_review.py
rename to klausur-service/backend/ocr/review/review.py
diff --git a/klausur-service/backend/cv_review_spell.py b/klausur-service/backend/ocr/review/spell.py
similarity index 100%
rename from klausur-service/backend/cv_review_spell.py
rename to klausur-service/backend/ocr/review/spell.py
diff --git a/klausur-service/backend/cv_vocab_types.py b/klausur-service/backend/ocr/types.py
similarity index 100%
rename from klausur-service/backend/cv_vocab_types.py
rename to klausur-service/backend/ocr/types.py
diff --git a/klausur-service/backend/cv_words_first.py b/klausur-service/backend/ocr/words_first.py
similarity index 100%
rename from klausur-service/backend/cv_words_first.py
rename to klausur-service/backend/ocr/words_first.py
diff --git a/studio-v2/components/Sidebar.tsx b/studio-v2/components/Sidebar.tsx
index 54d0daf..84d9a27 100644
--- a/studio-v2/components/Sidebar.tsx
+++ b/studio-v2/components/Sidebar.tsx
@@ -71,6 +71,11 @@ export function Sidebar({ selectedTab = 'dashboard', onTabChange }: SidebarProps
         <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M9.663 17h4.673M12 3v1m6.364 1.636l-.707.707M21 12h-1M4 12H3m3.343-5.657l-.707-.707m2.828 9.9a5 5 0 117.072 0l-.548.547A3.374 3.374 0 0014 18.469V19a2 2 0 11-4 0v-.531c0-.895-.356-1.754-.988-2.386l-.548-.547z" />
       </svg>
     )},
+    { id: 'eltern', labelKey: 'nav_eltern', href: '/parent', icon: (
+      <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z" />
+      </svg>
+    )},
     { id: 'vokabeln', labelKey: 'nav_vokabeln', href: '/vocab-worksheet', icon: (
       <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
         <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M7 21h10a2 2 0 002-2V9.414a1 1 0 00-.293-.707l-5.414-5.414A1 1 0 0012.586 3H7a2 2 0 00-2 2v14a2 2 0 002 2z" />
@@ -148,7 +153,7 @@ export function Sidebar({ selectedTab = 'dashboard', onTabChange }: SidebarProps
       onMouseEnter={() => setSidebarHovered(true)}
       onMouseLeave={() => setSidebarHovered(false)}
     >
-      <div className={`sticky top-4 h-[calc(100vh-32px)] backdrop-blur-2xl rounded-3xl border flex flex-col p-3 overflow-hidden ${
+      <div className={`sticky top-4 h-[calc(100vh-32px)] backdrop-blur-2xl rounded-3xl border flex flex-col p-3 overflow-y-auto overflow-x-hidden ${
         isDark
           ? 'bg-white/10 border-white/20'
           : 'bg-white/70 border-black/10 shadow-xl'