feat(*): svelte 5 panel view sharing the gateway ui, obsidian theme, preview and tests

vitest.config.ts

@@ -0,0 +1,13 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  resolve: {
+    alias: {
+      obsidian: new URL("./tests/obsidian-stub.ts", import.meta.url).pathname,
+    },
+  },
+  test: {
+    environment: "node",
+    include: ["tests/**/*.test.ts"],
+  },
+});