fix: remove invalid YAML escape in Traefik Host() label

\` is not a valid escape sequence in YAML double-quoted strings,
causing Coolify to fail parsing the dev-container compose on provision.
Backticks are literal characters in YAML double-quoted strings and
need no escaping — only the JS template literal escape (\`) is required.

Made-with: Cursor

lib/dev-container.ts

@@ -159,7 +159,7 @@ function renderDevCompose(projectSlug: string, projectId: string): string {
     const port = PREVIEW_BASE_PORT + i;
     const router = `vibn-dev-${projectSlug}-${i}`;
     const host = `preview-${i}-${projectSlug}-${token}.${PREVIEW_DOMAIN_BASE_RAW}`;
-    traefikLabels.push(`"traefik.http.routers.${router}.rule=Host(\\\`${host}\\\`)"`);
+    traefikLabels.push(`"traefik.http.routers.${router}.rule=Host(\`${host}\`)"`);
     traefikLabels.push(`"traefik.http.routers.${router}.entrypoints=https"`);
     traefikLabels.push(`"traefik.http.routers.${router}.tls=true"`);
     traefikLabels.push(`"traefik.http.routers.${router}.tls.certresolver=letsencrypt"`);