Add CMS features with admin interface and OAuth authentication integration

- Introduced Caddy server for serving frontend and API backend.
- Implemented admin dashboard for creating, editing, and managing events.
- Replaced session-based authentication with token-based OAuth using Gitea.
- Added support for drag-and-drop event reordering in the admin interface.
- Standardized Fastify route validation with JSON schemas.
- Enhanced authentication flow with cookie-based state and secure token storage.
- Reworked backend routes to handle publishing, event management, and content updates.
- Updated `Dockerfile.caddy` and `fly.toml` for deployment configuration.

backend/src/routes/settings.ts

@@ -4,9 +4,14 @@ import { db } from '../config/database.js';
 import { siteSettings } from '../db/schema.js';
 import { eq } from 'drizzle-orm';
 
-const settingSchema = z.object({
-  value: z.string(),
-});
+// Fastify JSON schema for settings body
+const settingBodyJsonSchema = {
+  type: 'object',
+  required: ['value'],
+  properties: {
+    value: { type: 'string' },
+  },
+} as const;
 
 const settingsRoute: FastifyPluginAsync = async (fastify) => {
 
@@ -50,12 +55,12 @@ const settingsRoute: FastifyPluginAsync = async (fastify) => {
   // Update setting
   fastify.put('/settings/:key', {
     schema: {
-      body: settingSchema,
+      body: settingBodyJsonSchema,
     },
     preHandler: [fastify.authenticate],
   }, async (request, reply) => {
     const { key } = request.params as { key: string };
-    const { value } = request.body as z.infer<typeof settingSchema>;
+    const { value } = request.body as any;
 
     // Check if setting exists
     const [existing] = await db