perf(test): expand light lane routing

test/scripts/test-projects.test.ts

@@ -93,4 +93,64 @@ describe("scripts/test-projects changed-target routing", () => {
       },
     ]);
   });
+
+  it("routes changed plugin-sdk source allowlist files to sibling light tests", () => {
+    const plans = buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
+      "src/plugin-sdk/lazy-value.ts",
+    ]);
+
+    expect(plans).toEqual([
+      {
+        config: "vitest.plugin-sdk-light.config.ts",
+        forwardedArgs: [],
+        includePatterns: ["src/plugin-sdk/lazy-value.test.ts"],
+        watchMode: false,
+      },
+    ]);
+  });
+
+  it("routes changed commands source allowlist files to sibling light tests", () => {
+    const plans = buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
+      "src/commands/status-overview-values.ts",
+    ]);
+
+    expect(plans).toEqual([
+      {
+        config: "vitest.commands-light.config.ts",
+        forwardedArgs: [],
+        includePatterns: ["src/commands/status-overview-values.test.ts"],
+        watchMode: false,
+      },
+    ]);
+  });
+
+  it("keeps non-allowlisted plugin-sdk source files on the heavy lane", () => {
+    const plans = buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
+      "src/plugin-sdk/facade-runtime.ts",
+    ]);
+
+    expect(plans).toEqual([
+      {
+        config: "vitest.plugin-sdk.config.ts",
+        forwardedArgs: [],
+        includePatterns: ["src/plugin-sdk/**/*.test.ts"],
+        watchMode: false,
+      },
+    ]);
+  });
+
+  it("keeps non-allowlisted commands source files on the heavy lane", () => {
+    const plans = buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
+      "src/commands/channels.add.ts",
+    ]);
+
+    expect(plans).toEqual([
+      {
+        config: "vitest.commands.config.ts",
+        forwardedArgs: [],
+        includePatterns: ["src/commands/**/*.test.ts"],
+        watchMode: false,
+      },
+    ]);
+  });
 });

test/vitest-light-paths.test.ts

@@ -0,0 +1,43 @@
+import { describe, expect, it } from "vitest";
+import {
+  isCommandsLightTarget,
+  resolveCommandsLightIncludePattern,
+} from "../vitest.commands-light-paths.mjs";
+import {
+  isPluginSdkLightTarget,
+  resolvePluginSdkLightIncludePattern,
+} from "../vitest.plugin-sdk-paths.mjs";
+
+describe("light vitest path routing", () => {
+  it("maps plugin-sdk allowlist source and test files to sibling light tests", () => {
+    expect(isPluginSdkLightTarget("src/plugin-sdk/lazy-value.ts")).toBe(true);
+    expect(isPluginSdkLightTarget("src/plugin-sdk/lazy-value.test.ts")).toBe(true);
+    expect(resolvePluginSdkLightIncludePattern("src/plugin-sdk/lazy-value.ts")).toBe(
+      "src/plugin-sdk/lazy-value.test.ts",
+    );
+    expect(resolvePluginSdkLightIncludePattern("src/plugin-sdk/lazy-value.test.ts")).toBe(
+      "src/plugin-sdk/lazy-value.test.ts",
+    );
+  });
+
+  it("keeps non-allowlisted plugin-sdk files off the light lane", () => {
+    expect(isPluginSdkLightTarget("src/plugin-sdk/facade-runtime.ts")).toBe(false);
+    expect(resolvePluginSdkLightIncludePattern("src/plugin-sdk/facade-runtime.ts")).toBeNull();
+  });
+
+  it("maps commands allowlist source and test files to sibling light tests", () => {
+    expect(isCommandsLightTarget("src/commands/text-format.ts")).toBe(true);
+    expect(isCommandsLightTarget("src/commands/text-format.test.ts")).toBe(true);
+    expect(resolveCommandsLightIncludePattern("src/commands/text-format.ts")).toBe(
+      "src/commands/text-format.test.ts",
+    );
+    expect(resolveCommandsLightIncludePattern("src/commands/text-format.test.ts")).toBe(
+      "src/commands/text-format.test.ts",
+    );
+  });
+
+  it("keeps non-allowlisted commands files off the light lane", () => {
+    expect(isCommandsLightTarget("src/commands/channels.add.ts")).toBe(false);
+    expect(resolveCommandsLightIncludePattern("src/commands/channels.add.ts")).toBeNull();
+  });
+});