better recon info in certain (nested) situations

src/checks/todos.ts

@@ -36,7 +36,6 @@
  * @module pygienium/checks/todos
  */
 
-import { readdirSync } from "node:fs";
 import { readFile, readdir, stat } from "node:fs/promises";
 import { join, relative } from "node:path";
 import { loadRunState } from "../run-state.js";
@@ -46,6 +45,7 @@ import {
 	type CheckScope,
 } from "./registry.js";
 import {
+	hasScopeSources,
 	isScopeSource,
 	SCOPE_EXCLUDE_DIRS,
 	scopeRulesMarkdown,
@@ -405,23 +405,13 @@ function renderFindings(
  * with zero source files gives the scanner nothing to analyse.
  */
 function todosGate(cwd: string): string | undefined {
-	let found = false;
 	try {
-		const entries = readdirSync(cwd);
-		for (const entry of entries) {
-			if (isScopeSource(entry)) {
-				found = true;
-				break;
-			}
-		}
+		if (hasScopeSources(cwd)) return undefined;
 	} catch {
 		// unreadable cwd → let the agent decide; don't block.
 		return undefined;
 	}
-	if (!found) {
-		return "no source files found to inspect";
-	}
-	return undefined;
+	return "no source files found to inspect";
 }
 
 /**