Electron CI Build + Version Info Modal

CI Pipeline:
- New electron-build stage (electronuserland/builder:wine) builds Windows installer
- New electron-deploy stage copies artifacts to container /data/downloads/
- Triggers on electron/ or VERSION changes + manual trigger
- bump-version now syncs electron/package.json via jq

Version Modal:
- Click version badge to open info modal
- Shows Hub Version, Desktop App Version, Server status
- Hint when versions differ (update available)
- Download link when not using Electron app
- Escape + overlay click to close

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

web/src/styles.css

@@ -336,6 +336,113 @@ html, body {
   max-width: 300px;
 }
 
+/* ── Version Info Modal ── */
+.hub-version-clickable {
+  cursor: pointer;
+  transition: all var(--transition);
+  padding: 2px 8px;
+  border-radius: var(--radius);
+}
+.hub-version-clickable:hover {
+  color: var(--accent);
+  background: rgba(230, 126, 34, 0.1);
+}
+.hub-version-overlay {
+  position: fixed;
+  inset: 0;
+  z-index: 9999;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: rgba(0, 0, 0, 0.7);
+  backdrop-filter: blur(4px);
+}
+.hub-version-modal {
+  background: var(--bg-primary);
+  border: 1px solid var(--border);
+  border-radius: 16px;
+  width: 340px;
+  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
+  overflow: hidden;
+  animation: hub-modal-in 200ms ease;
+}
+@keyframes hub-modal-in {
+  from { opacity: 0; transform: scale(0.95) translateY(8px); }
+  to { opacity: 1; transform: scale(1) translateY(0); }
+}
+.hub-version-modal-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 14px 16px;
+  border-bottom: 1px solid var(--border);
+  font-weight: 700;
+  font-size: 14px;
+}
+.hub-version-modal-close {
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  cursor: pointer;
+  padding: 4px 8px;
+  border-radius: 6px;
+  font-size: 14px;
+  transition: all var(--transition);
+}
+.hub-version-modal-close:hover {
+  background: rgba(255, 255, 255, 0.08);
+  color: var(--text-normal);
+}
+.hub-version-modal-body {
+  padding: 16px;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+.hub-version-modal-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+.hub-version-modal-label {
+  color: var(--text-muted);
+  font-size: 13px;
+}
+.hub-version-modal-value {
+  font-weight: 600;
+  font-size: 13px;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+.hub-version-modal-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background: var(--danger);
+  flex-shrink: 0;
+}
+.hub-version-modal-dot.online {
+  background: var(--success);
+}
+.hub-version-modal-link {
+  color: var(--accent);
+  text-decoration: none;
+  font-weight: 500;
+  font-size: 13px;
+}
+.hub-version-modal-link:hover {
+  text-decoration: underline;
+}
+.hub-version-modal-hint {
+  font-size: 11px;
+  color: var(--accent);
+  padding: 6px 10px;
+  background: rgba(230, 126, 34, 0.1);
+  border-radius: var(--radius);
+  text-align: center;
+}
+
 /* ── Main Content Area ── */
 .hub-content {
   flex: 1;