fix: even more closing of M0/M1/M2 gaps against the spec

locales/ui/en.json

@@ -132,6 +132,7 @@
   "engine.calendarFailed": "Calendar regeneration failed: {error}",
   "engine.calendarNoProject": "No active project",
   "engine.validateTranslationsStarted": "Validating translations...",
+  "engine.validateMediaStarted": "Validating media assets...",
   "engine.validateTranslationsComplete": "Translation validation: {dbIssues} DB issues, {fsIssues} filesystem issues",
   "engine.validateTranslationsFailed": "Translation validation failed: {error}",
   "engine.fillMissingTranslationsOffline": "Cannot fill translations: AI is unavailable in offline mode",
@@ -143,5 +144,25 @@
   "engine.generateSiteNoProject": "No active project",
   "dialog.selectFolder": "Select Folder",
   "dialog.importMedia": "Import Media",
-  "dialog.imageFilter": "Images"
+  "dialog.imageFilter": "Images",
+  "settings.nav.project": "Project",
+  "settings.nav.editor": "Editor",
+  "settings.nav.content": "Content",
+  "settings.nav.ai": "AI",
+  "settings.nav.technology": "Technology",
+  "settings.nav.publishing": "Publishing",
+  "settings.nav.data": "Data",
+  "settings.nav.mcp": "MCP",
+  "settings.nav.style": "Style",
+  "tags.nav.cloud": "Tag Cloud",
+  "tags.nav.manage": "Manage Tags",
+  "tags.nav.merge": "Merge Tags",
+  "sidebar.chatYesterday": "Yesterday",
+  "modal.confirmDelete.title": "Confirm Delete",
+  "modal.confirmDelete.warning": "This action cannot be undone.",
+  "modal.confirmDelete.cancel": "Cancel",
+  "modal.confirmDelete.delete": "Delete",
+  "modal.confirm.title": "Confirm",
+  "modal.confirm.cancel": "Cancel",
+  "modal.confirm.confirm": "Confirm"
 }