Add localization keys for the unlinked checks-panel state

The unlinked title, relink action, and the remote-runtime upgrade notice
introduced untranslated keys that static analysis requires in en.json.

src/renderer/src/i18n/locales/en.json

@@ -444,7 +444,12 @@
               "meta": {
                 "persist": {
                   "877e3638d8": "Update the remote runtime to change this workspace’s linked issue",
-                  "4367540861": "Update the remote runtime to link Linear issues"
+                  "4367540861": "Update the remote runtime to link Linear issues",
+                  "github": {
+                    "pr": {
+                      "suppression": "Update the remote runtime to unlink GitHub pull requests"
+                    }
+                  }
                 }
               }
             }
@@ -16997,5 +17002,12 @@
   },
   "quickOpen": {
     "moreMatchesAvailable": "More matches may be available. Refine your search to narrow the results."
+  },
+  "checksPanel": {
+    "unlinked": {
+      "title": "Pull request unlinked",
+      "description": "PR #{{number}} is hidden for this workspace. Link it again to restore checks and review details.",
+      "relink": "Link PR #{{number}}"
+    }
   }
 }