feat: Implement pull-to-refresh functionality across various components

- Added `PullToRefresh` component to enable pull-to-refresh behavior in `StopList` and `Estimates` pages.
- Integrated `usePullToRefresh` hook to manage pull-to-refresh state and actions.
- Created `UpdateNotification` component to inform users of available updates from the service worker.
- Enhanced service worker management with `ServiceWorkerManager` class for better update handling and caching strategies.
- Updated CSS styles for new components and improved layout for better user experience.
- Refactored API caching logic in service worker to handle multiple endpoints and dynamic cache expiration.
- Added auto-refresh functionality for estimates data to keep information up-to-date.

1 files changed, 72 insertions, 0 deletions

diff --git a/src/frontend/app/components/PullToRefresh.css b/src/frontend/app/components/PullToRefresh.css
new file mode 100644
index 0000000..15ca74b
--- /dev/null
+++ b/src/frontend/app/components/PullToRefresh.css
@@ -0,0 +1,72 @@
+.pull-to-refresh-container {
+  position: relative;
+  height: 100%;
+  overflow: hidden;
+}
+
+.pull-to-refresh-indicator {
+  position: absolute;
+  top: -80px;
+  left: 50%;
+  transform: translateX(-50%);
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 8px;
+  padding: 16px;
+  z-index: 1000;
+  opacity: 0;
+  transition: opacity 0.2s ease;
+}
+
+.pull-to-refresh-icon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 40px;
+  height: 40px;
+  border-radius: 50%;
+  background-color: var(--button-background-color);
+  color: white;
+  transition: all 0.3s ease;
+  transform-origin: center;
+}
+
+.pull-to-refresh-icon.ready {
+  background-color: #28a745;
+}
+
+.pull-to-refresh-icon.spinning {
+  animation: spin 1s linear infinite;
+}
+
+@keyframes spin {
+  from { transform: rotate(0deg); }
+  to { transform: rotate(360deg); }
+}
+
+.pull-to-refresh-text {
+  font-size: 0.875rem;
+  color: var(--subtitle-color);
+  font-weight: 500;
+  text-align: center;
+  white-space: nowrap;
+}
+
+.pull-to-refresh-content {
+  height: 100%;
+  overflow: auto;
+  transition: transform 0.2s ease;
+}
+
+/* Disable browser's default pull-to-refresh on mobile */
+.pull-to-refresh-content {
+  overscroll-behavior-y: contain;
+}
+
+@media (hover: hover) {
+  /* Hide pull-to-refresh on desktop devices */
+  .pull-to-refresh-indicator {
+    display: none;
+  }
+}