Organize imports: drag & drop, virtualization, dupes, undo, days select, localStorage

- Native HTML5 drag & drop between categories with drop-target highlight
- Virtualized item lists via @tanstack/react-virtual (fixed 34px rows)
- Auto-batching of large groups (500 items / 50 groups per run)
- Duplicate detection against the destination page with badge + summary
- Per-category layout preview grid
- Undo history for item moves (single + batch, tracks source groups)
- Days-range selector to load older imports (30/60/90/180)
- LocalStorage persistence of user settings (mode, destination, price, days)
- Added translation keys across all 25 locales

src/messages/tr.json

@@ -2053,7 +2053,17 @@
 						"moveItemTo": "Taşı…",
 						"batchMoveTo": "Seçimi taşı…",
 						"selectedCount": "{count} seçildi",
-						"clearSelection": "Seçimi temizle"
+						"clearSelection": "Seçimi temizle",
+						"undo": "Undo",
+						"daysLabel": "Days",
+						"daysValue": "{days} days",
+						"dupeSummary": "Already in the destination page: {count} item{count, plural, one {} other {s}}",
+						"layoutPreview": "Layout preview",
+						"emptyCategory": "No items in this category",
+						"dupeOnDest": "Already present on the destination page",
+						"dupeOnDestShort": "duplicate",
+						"errorPartial": "{failed} of {total} runs failed. Review and retry.",
+						"successCreateRuns": "Created {count, plural, one {1 page} other {# pages}} in {runs, plural, one {1 run} other {# runs}} with {moved} moved and {added} added furniture"
 					}
 				},
 				"discovery": {