Add Gitea Actions deploy workflow and server configuration

- Add basePath /admin to Next.js config for path-based routing
- Add .gitea/workflows/deploy.yml for CI/CD via Gitea Actions

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

admin-ui/messages/en.json

@@ -32,6 +32,7 @@
     "slugHint": "Lowercase letters (a-z), digits (0-9), hyphens. Spaces become hyphens.",
     "savedSuccessfully": "Saved successfully.",
     "errorSaving": "Error saving",
+    "validationErrors": "Please fix the errors in the form (e.g. required fields).",
     "saving": "Saving…",
     "save": "Save",
     "backToList": "Back to list",
@@ -175,7 +176,11 @@
     "filterByTag": "Tag:",
     "tagAll": "All",
     "noResults": "No content types match your search or filter.",
-    "noCollections": "No collections loaded. Check that the RustyCMS API is running at {url}."
+    "noCollections": "No collections loaded. Check that the RustyCMS API is running at {url}.",
+    "recentSectionTitle": "Last 3 edited posts",
+    "recentSectionLink": "All posts",
+    "recentSectionEmpty": "No posts yet.",
+    "loading": "Loading…"
   },
   "TypesPage": {
     "title": "Types",
@@ -355,6 +360,8 @@
     "newEntry": "New entry",
     "colActions": "Actions",
     "colStatus": "Status",
+    "colCreated": "Created",
+    "colLastEdited": "Last edited",
     "published": "Published",
     "noEntries": "No entries.",
     "noEntriesCreate": "No entries yet. Create the first one.",
@@ -382,6 +389,8 @@
   },
   "ContentEditPage": {
     "title": "Edit entry",
+    "created": "Created",
+    "lastEdited": "Last edited",
     "apiLink": "API link (data preview):",
     "referrersSection": "Referenced by",
     "noReferrers": "No other entries reference this one.",