Add public endpoints and refactor deployments

- Implemented public `/gallery/public` and `/events/public` endpoints for fetching published data without authentication.
- Updated persistent volume configuration for Fly.io across backend and static file serving.
- Adjusted frontend to dynamically fetch events and gallery images from backend API.
- Refined Woodpecker pipeline for clearer separation of backend and frontend deployments.

backend/src/routes/events.ts

@@ -36,7 +36,15 @@ const reorderBodyJsonSchema = {
 } as const;
 
 const eventsRoute: FastifyPluginAsync = async (fastify) => {
-  // List all events (by displayOrder)
+  // PUBLIC: List published events (no auth required)
+  fastify.get('/events/public', async () => {
+    const all = await db.select().from(events)
+      .where(eq(events.isPublished, true))
+      .orderBy(events.displayOrder);
+    return { events: all };
+  });
+
+  // List all events (by displayOrder) - admin only
   fastify.get('/events', { preHandler: [fastify.authenticate] }, async () => {
     const all = await db.select().from(events).orderBy(events.displayOrder);
     return { events: all };