Fix Docker build: add native deps for bcrypt, simplify vite config

- Add python3/make/g++ to Alpine for bcrypt native compilation
- Remove Socket.IO vite plugin (uses SvelteKit aliases unavailable at config level)
- Use prisma db push instead of migrate deploy for initial setup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vite.config.ts

@@ -1,23 +1,7 @@
 import { sveltekit } from '@sveltejs/kit/vite';
 import tailwindcss from '@tailwindcss/vite';
 import { defineConfig } from 'vite';
-import type { Plugin } from 'vite';
-
-function socketIOPlugin(): Plugin {
-	return {
-		name: 'socket-io-dev',
-		configureServer(server) {
-			if (!server.httpServer) return;
-
-			// Dynamic import to avoid bundling socket.io in client
-			import('./src/socket/index.js').then(({ initSocketIO }) => {
-				initSocketIO(server.httpServer!);
-				console.log('Socket.IO dev server initialized');
-			});
-		}
-	};
-}
 
 export default defineConfig({
-	plugins: [tailwindcss(), sveltekit(), socketIOPlugin()]
+	plugins: [tailwindcss(), sveltekit()]
 });