fix: preserve package-less Nx mapping

Match the existing bounded project.json discovery scope when deciding whether Node-family mappers are needed.

Author: steipete

src/mapper.test.ts

@@ -17263,6 +17263,22 @@ EndProject
     expect(result.features.map((feature) => feature.title)).toContain("Node source apps/web/src");
   });
 
+  it("preserves package-less Nx projects outside conventional roots", async () => {
+    const root = await fixtureRoot("clawpatch-map-package-less-nx-");
+    await writeFixture(
+      root,
+      "tools/cli/project.json",
+      JSON.stringify({ name: "cli", sourceRoot: "tools/cli/src" }),
+    );
+    await writeFixture(root, "tools/cli/src/index.ts", "export function main() {}\n");
+
+    const project = await detectProject(root);
+    const result = await mapFeatures(root, project, []);
+
+    expect(project.detected.languages).not.toContain("typescript");
+    expect(result.features.map((feature) => feature.title)).toContain("Node source tools/cli/src");
+  });
+
   it("propagates Turbo failures and retries with a fresh mapping context", async () => {
     const root = await fixtureRoot("clawpatch-map-turbo-failure-");
     await writeFixture(root, "package.json", JSON.stringify({ name: "node-app" }));

src/mappers/projects.ts

@@ -127,7 +127,7 @@ export async function discoverNodeProjects(root: string): Promise<NodeProjectInf
 }
 
 export async function hasFallbackNodeProjectSignal(root: string): Promise<boolean> {
-  if (await pathExists(join(root, "nx.json"))) {
+  if ((await pathExists(join(root, "nx.json"))) || (await hasNestedNxProject(root, "", 5))) {
     return true;
   }
   for (const prefix of ["apps", "packages", "frontend", "client", "web"]) {
@@ -153,6 +153,26 @@ export async function hasFallbackNodeProjectSignal(root: string): Promise<boolea
   return false;
 }
 
+async function hasNestedNxProject(
+  root: string,
+  prefix: string,
+  remainingDepth: number,
+): Promise<boolean> {
+  if (remainingDepth < 0 || shouldSkipProjectDir(prefix)) {
+    return false;
+  }
+  if (prefix.length > 0 && (await pathExists(join(root, prefix, "project.json")))) {
+    return true;
+  }
+  for (const entry of await safeDirectoryEntries(root, prefix)) {
+    const child = prefix.length === 0 ? entry : `${prefix}/${entry}`;
+    if (await hasNestedNxProject(root, child, remainingDepth - 1)) {
+      return true;
+    }
+  }
+  return false;
+}
+
 async function hasNestedPackageJson(
   root: string,
   prefix: string,