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/Dockerfile

@@ -10,7 +10,8 @@ RUN apk add --no-cache python3 make g++
 
 # Install dependencies
 COPY package*.json ./
-RUN npm ci
+# Use npm ci when lockfile exists, fallback to npm install for local/dev
+RUN npm ci || npm install
 
 # Copy source
 COPY . .
@@ -26,17 +27,8 @@ WORKDIR /app
 # Install runtime dependencies (git for simple-git, sqlite3 CLI tool)
 RUN apk add --no-cache git sqlite
 
-# Install build dependencies for better-sqlite3 (needed for npm ci)
-RUN apk add --no-cache python3 make g++
-
-# Copy package files
-COPY package*.json ./
-
-# Install production dependencies only
-RUN npm ci --production
-
-# Remove build dependencies after install
-RUN apk del python3 make g++
+# Copy production dependencies from builder (already compiled native modules)
+COPY --from=builder /app/node_modules ./node_modules
 
 # Copy built files from builder
 COPY --from=builder /app/dist ./dist
@@ -63,5 +55,5 @@ ENV DATABASE_PATH=/app/data/gallus_cms.db
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
   CMD node -e "require('http').get('http://localhost:8080/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
 
-# Start application
-CMD ["node", "dist/index.js"]
+# Run DB migrations if present, then start application
+CMD ["/bin/sh", "-lc", "[ -f dist/migrate.js ] && node dist/migrate.js || true; node dist/index.js"]