feat: initial open-source release of Pipely

OTA update server designed for high-concurrency, low-bandwidth deployments.
GORM-backed PostgreSQL, JWT auth, device management, artefact versioning,
deployment rollout with gated rate-limited downloads, and a React admin panel.

web/src/components/Layout.css

@@ -0,0 +1,79 @@
+.app-layout {
+  display: flex;
+  min-height: 100vh;
+}
+
+.sidebar {
+  width: 220px;
+  background: #1a1a2e;
+  color: #e0e0e0;
+  display: flex;
+  flex-direction: column;
+  padding: 0;
+  flex-shrink: 0;
+}
+
+.sidebar-brand {
+  padding: 20px 16px;
+  border-bottom: 1px solid #16213e;
+}
+
+.sidebar-brand h2 {
+  margin: 0;
+  font-size: 16px;
+  color: #e94560;
+  letter-spacing: 1px;
+}
+
+.sidebar nav {
+  flex: 1;
+  padding: 12px 0;
+}
+
+.nav-link {
+  display: block;
+  padding: 10px 20px;
+  color: #a0a0b8;
+  text-decoration: none;
+  font-size: 14px;
+  transition: background 0.15s, color 0.15s;
+}
+
+.nav-link:hover {
+  background: #16213e;
+  color: #fff;
+}
+
+.nav-link.active {
+  background: #e94560;
+  color: #fff;
+}
+
+.sidebar-footer {
+  padding: 16px;
+  border-top: 1px solid #16213e;
+}
+
+.btn-logout {
+  width: 100%;
+  padding: 8px;
+  background: transparent;
+  border: 1px solid #e94560;
+  color: #e94560;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 13px;
+  transition: background 0.15s, color 0.15s;
+}
+
+.btn-logout:hover {
+  background: #e94560;
+  color: #fff;
+}
+
+.content {
+  flex: 1;
+  padding: 24px 32px;
+  background: #f5f5f7;
+  overflow-y: auto;
+}