perf: optimize dashboard loading and builds

scripts/benchmarks/board-static-graph.spec.ts

@@ -0,0 +1,37 @@
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+
+import { collectBoardStaticGraph, getRuntimeModuleSpecifiers } from "./board-static-graph.mts";
+
+describe("board static dependency graph", () => {
+  it("ignores type-only and dynamic imports", () => {
+    expect(
+      getRuntimeModuleSpecifiers(
+        [
+          'import type { A } from "type-only";',
+          'import { type B } from "also-type-only";',
+          'import { C, type D } from "runtime";',
+          'export type { E } from "export-type";',
+          'export { type F } from "also-export-type";',
+          'export { G } from "runtime-export";',
+          'export * from "runtime-star";',
+          'import "runtime-side-effect";',
+          "import {",
+          "  H,",
+          "  type I,",
+          '} from "runtime-multiline";',
+          'void import("lazy");',
+        ].join("\n"),
+        "fixture.ts",
+      ),
+    ).toEqual(["runtime", "runtime-export", "runtime-star", "runtime-side-effect", "runtime-multiline"]);
+  });
+
+  it("keeps widget registries, editors, Spotlight, and onboarding tour out of the board's static graph", () => {
+    const result = collectBoardStaticGraph(path.resolve("."));
+    expect(result.visitedModuleCount).toBeGreaterThan(0);
+    expect(result.bareWidgetImports).toEqual([]);
+    expect(result.reachedForbiddenModules).toEqual([]);
+    expect(result.unresolvedWorkspaceImports).toEqual([]);
+  });
+});