feat(FN-3298): add regression test for runtime plugin alias

Adds a regression test for runtime plugin alias functionality (FN-3298 Step 3), covering 25 lines of test coverage for this feature.

Fusion-Task-Id: FN-3298

packages/dashboard/src/__tests__/runtime-plugin-alias-regression.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, it } from "vitest";
+import { readFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+describe("FN-3298 regression: dashboard vitest runtime plugins resolve from source", () => {
+  it("aliases hermes/openclaw/paperclip runtime plugin imports to src entrypoints", () => {
+    const testDir = dirname(fileURLToPath(import.meta.url));
+    const vitestConfigPath = join(testDir, "..", "..", "vitest.config.ts");
+    const config = readFileSync(vitestConfigPath, "utf8");
+
+    expect(config).toContain('"@fusion-plugin-examples/hermes-runtime": resolve(');
+    expect(config).toContain('"../../plugins/fusion-plugin-hermes-runtime/src/index.ts"');
+
+    expect(config).toContain('"@fusion-plugin-examples/openclaw-runtime": resolve(');
+    expect(config).toContain('"../../plugins/fusion-plugin-openclaw-runtime/src/index.ts"');
+
+    expect(config).toContain('"@fusion-plugin-examples/paperclip-runtime": resolve(');
+    expect(config).toContain('"../../plugins/fusion-plugin-paperclip-runtime/src/index.ts"');
+
+    expect(config).not.toContain('fusion-plugin-hermes-runtime/dist/index.js');
+    expect(config).not.toContain('fusion-plugin-openclaw-runtime/dist/index.js');
+    expect(config).not.toContain('fusion-plugin-paperclip-runtime/dist/index.js');
+  });
+});