Show the running version next to the brand; bump to 0.2.1

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

static/app.css

@@ -220,3 +220,7 @@ a.button{display:inline-block;text-decoration:none;border:1px solid #dbe3de;bord
 .event-details{display:flex;flex-wrap:wrap;gap:4px 18px;margin:6px 0 0}.event-details>div{min-width:0;max-width:100%}.event-details dt{display:inline;color:var(--muted);font-size:11px}.event-details dt::after{content:": "}.event-details dd{display:inline;margin:0;overflow-wrap:anywhere;word-break:break-word;font-size:12px}
 .chips{display:inline-flex;flex-wrap:wrap;gap:4px}.chip{font:11px/1.4 Consolas,monospace;background:#eef3f0;padding:1px 6px;border-radius:10px;overflow-wrap:anywhere}
 @media(max-width:700px){.event-search{flex-wrap:wrap}.event-search input{flex-basis:100%}.event-time{margin-left:0;flex-basis:100%}}
+
+.brand .app-version{align-self:flex-end;margin-bottom:7px;font-size:11px;font-weight:500;letter-spacing:0;color:var(--muted)}
+@media(max-width:950px){.sidebar .brand{flex-direction:column;gap:2px}.sidebar .brand .app-version{align-self:center;margin:0}}
+@media(max-width:700px){.sidebar{gap:4px;padding:8px}.sidebar nav :is(button,a){padding:8px 4px}.sidebar .brand .app-version{margin:0;font-size:10px}}