Bug bash 6: the phone fits ZFS, Usage and journal lines; a snapshot's default name is local time; twelve smaller faults

Found by a headless pass over every page on every machine at desktop and phone widths, then
every interaction on the hub. BUGS.md has the list, what was checked and found fine, and the
quality-of-life notes to discuss.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

web/src/Updates.tsx

@@ -52,7 +52,11 @@ export default function Updates() {
     setOpen(p.name)
     if (!changelog[p.name]) {
       try { const r = await api.changelog(p.name); setChangelog((c) => ({ ...c, [p.name]: r.text || '(empty)' })) }
-      catch (e) { setChangelog((c) => ({ ...c, [p.name]: e instanceof Error ? e.message : 'unavailable' })) }
+      catch (e) {
+        const m = e instanceof Error ? e.message : 'unavailable'
+        // apt's own words for a third-party repository that publishes none are a wall of "E: Failed to fetch"
+        setChangelog((c) => ({ ...c, [p.name]: /changelog unavailable|failed to fetch/i.test(m) ? 'No changelog is published for this package — its repository does not provide one.' : m }))
+      }
     }
   }
   const toggle = (n: string) => setSel((s) => { const x = new Set(s); if (x.has(n)) x.delete(n); else x.add(n); return x })
@@ -99,7 +103,7 @@ export default function Updates() {
                 <span className="n">{p.name}{p.security && <span className="badge bad">security</span>}</span>
                 <span className="d">{p.description}</span>
               </span>
-              <span className="pkg-ver"><span className="muted">{p.current}</span> → {p.candidate}<span className="muted"> · {p.suite}</span></span>
+              <span className="pkg-ver"><span className="muted">{p.current}</span> → {p.candidate}{p.suite && <span className="muted"> · {p.suite}</span>}</span>
             </div>
             {open === p.name && <pre className="run-out changelog">{changelog[p.name] ?? <span className="muted"><Spinner /> fetching changelog…</span>}</pre>}
           </div>