Show when each Gitea repository was last updated

The API already returned Gitea's updated_at for every repo but the page
never displayed it. The Gitea table now has a sortable "Last updated"
column with a relative age ("3 d ago") over the exact date/time (in the
app's configured date format), and the CSV export includes it.

Gitea only exposes a single updated_at per repository (there is no
separate last-push time), so this is Gitea's own notion of "updated".

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web/src/pages/Gitea.tsx

@@ -6,6 +6,8 @@ import SortableTh from "../components/SortableTh";
 import { usePagination } from "../hooks/usePagination";
 import Pagination from "../components/Pagination";
 import { downloadCsv } from "../utils/csv";
+import { formatDateTime } from "../utils/date";
+import { formatAgo } from "../utils/duration";
 
 function runStatusBadge(repo: GiteaRepo) {
   const run = repo.latestRun;
@@ -97,10 +99,11 @@ export default function Gitea({ user }: { user: CurrentUser }) {
     if (!sorted) return;
     downloadCsv(
       "gitea-repos.csv",
-      ["Repository", "Private", "Last run", "Branch", "Status"],
+      ["Repository", "Private", "Last updated", "Last run", "Branch", "Status"],
       sorted.map((r) => [
         r.fullName,
         r.private ? "yes" : "no",
+        r.updatedAt ? formatDateTime(new Date(r.updatedAt)) : "",
         r.latestRun ? `#${r.latestRun.runNumber} ${r.latestRun.displayTitle}` : "",
         r.latestRun?.headBranch ?? "",
         r.latestRun ? r.latestRun.conclusion || r.latestRun.status : "",
@@ -167,6 +170,7 @@ export default function Gitea({ user }: { user: CurrentUser }) {
                   <thead>
                     <tr>
                       <SortableTh<GiteaRepo> label="Repository" sortKeyName="fullName" activeKey={sortKey} direction={sortDir} onSort={requestSort} />
+                      <SortableTh<GiteaRepo> label="Last updated" sortKeyName="updatedAt" activeKey={sortKey} direction={sortDir} onSort={requestSort} />
                       <th>Last run</th>
                       <th>Branch</th>
                       <th>Status</th>
@@ -182,6 +186,16 @@ export default function Gitea({ user }: { user: CurrentUser }) {
                           </a>
                           {r.private && <span className="badge bg-secondary-lt ms-2">Private</span>}
                         </td>
+                        <td>
+                          {r.updatedAt ? (
+                            <>
+                              <div>{formatAgo(r.updatedAt)}</div>
+                              <div className="text-secondary small">{formatDateTime(new Date(r.updatedAt))}</div>
+                            </>
+                          ) : (
+                            <span className="text-secondary">—</span>
+                          )}
+                        </td>
                         <td className="text-secondary">
                           {r.latestRun ? (
                             <a href={r.latestRun.htmlUrl} target="_blank" rel="noopener noreferrer">
@@ -212,7 +226,7 @@ export default function Gitea({ user }: { user: CurrentUser }) {
                     ))}
                     {sorted?.length === 0 && (
                       <tr>
-                        <td colSpan={canEdit ? 5 : 4} className="text-secondary text-center">
+                        <td colSpan={canEdit ? 6 : 5} className="text-secondary text-center">
                           No repositories visible to this token.
                         </td>
                       </tr>

web/src/utils/duration.ts

@@ -7,3 +7,18 @@ export function formatRemaining(endsAtIso: string, now: number = Date.now()): st
   const days = Math.floor(hours / 24);
   return hours % 24 ? `${days} d ${hours % 24} h` : `${days} d`;
 }
+
+/** "just now", "5 min ago", "3 h ago", "12 d ago", "5 mo ago", "2 y ago" for an ISO timestamp (a future one reads as "just now"). */
+export function formatAgo(iso: string, now: number = Date.now()): string {
+  const t = new Date(iso).getTime();
+  if (!Number.isFinite(t)) return "";
+  const minutes = Math.floor(Math.max(0, now - t) / 60_000);
+  if (minutes < 1) return "just now";
+  if (minutes < 60) return `${minutes} min ago`;
+  const hours = Math.floor(minutes / 60);
+  if (hours < 24) return `${hours} h ago`;
+  const days = Math.floor(hours / 24);
+  if (days < 60) return `${days} d ago`;
+  if (days < 730) return `${Math.floor(days / 30)} mo ago`;
+  return `${Math.floor(days / 365)} y ago`;
+}