refactor(housekeeping): return result from bulkImport, remove dead server calls, sync i18n

- bulkImportPermissions now returns {count, errors} instead of void
- ImportSection shows per-entry error details in toast
- Remove testRankPermission server action (test is 100% client-side)
- Clean up unused testing state in TestSection
- Sync pages.admin.{import,translations} keys to all 20 languages
- Add importedWithErrors translation key to all locales

src/messages/nl.json

@@ -1641,7 +1641,7 @@
 				"pointsForm": {
 					"title": "Luisteraar punten configuratie",
 					"subtitle": "Reward listeners with currency for time spent on the radio. Edits write to website_settings (radio_points_* keys) and bust the runtime settings cache. Booleans use 0 / 1.",
-						"points": "Points",
+					"points": "Points",
 					"enabled": "Enabled",
 					"disabled": "Disabled",
 					"perMinute": "Per minute",
@@ -1876,6 +1876,7 @@
 				"emptyInput": "Lege invoer",
 				"invalidJson": "Ongeldige JSON",
 				"imported": "Geïmporteerd!",
+				"importedWithErrors": "{count} permissies geïmporteerd met {errors} fouten",
 				"presetApplied": "Preset toegepast!",
 				"cleared": "Alle permissies verwijderd!",
 				"invalidRank": "Ongeldige rang",
@@ -2119,6 +2120,37 @@
 					"saving": "Opslaan…",
 					"cancel": "Annuleren"
 				}
+			},
+			"import": {
+				"title": "Import",
+				"subtitle": "Import assets from external sources into your hotel.",
+				"badges": "Badges",
+				"badgesDescription": "Import and manage badge assets from external sources.",
+				"furni": "Furni",
+				"furniDescription": "Import furniture definitions, SWF files, and icons.",
+				"clothing": "Clothing",
+				"clothingDescription": "Import clothing and wearables for avatars.",
+				"effects": "Effects",
+				"effectsDescription": "Import avatar effects and animations.",
+				"pets": "Pets",
+				"petsDescription": "Import pet data and icons.",
+				"clone": "Clone",
+				"cloneDescription": "Clone existing items from one source to another."
+			},
+			"translations": {
+				"title": "Translations",
+				"subtitle": "Translate your hotel into multiple languages.",
+				"tabs": {
+					"cms": "CMS",
+					"client": "Client (Nitro)",
+					"emulator": "Emulator"
+				},
+				"emulator": {
+					"title": "Emulator",
+					"subtitle": "User-facing strings from emulator_settings (commands, wordfilter, pet/matchmaking messages).",
+					"infoBox": "Configuration settings (ports, timeouts, IDs) do not appear here — use the full settings link. Saved changes are synced to the emulator via RCON.",
+					"fullSettings": "Full settings"
+				}
 			}
 		}
 	}