feat(mvp): phase 1 - project scaffolding & tooling

Initialize SvelteKit project with Svelte 5, TypeScript strict, Tailwind CSS v4,
shadcn-svelte, Prisma + SQLite, Vitest, ESLint, Prettier. Add Docker multi-stage
build, docker-compose, and Gitea Actions CI pipeline.

svelte.config.js

@@ -0,0 +1,19 @@
+import adapter from '@sveltejs/adapter-node';
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	preprocess: vitePreprocess(),
+	kit: {
+		adapter: adapter({
+			out: 'build',
+			precompress: true
+		}),
+		alias: {
+			$components: 'src/lib/components',
+			$utils: 'src/lib/utils'
+		}
+	}
+};
+
+export default config;