diff --git a/scripts/test-report.ts b/scripts/test-report.ts
index 685f4e9..e90e7a6 100644
--- a/scripts/test-report.ts
+++ b/scripts/test-report.ts
@@ -1,5 +1,7 @@
-// Runs the whole test suite once and renders reports/test-report.md: a summary,
-// a describe-grouped inventory, and a coverage table.
+// Runs the test suite and renders reports/test-report.md: a summary, a
+// describe-grouped inventory, and a coverage table.
+// Any positional arguments are forwarded to `bun test` as path filters; with
+// none, the whole repo runs.
 // The report is written even when tests fail, and the process exits with the
 // test run's own status so CI can gate on it.
 // Split into run -> parse -> render so a future CI job can reuse parse+render
@@ -44,12 +46,13 @@ interface FileCoverage {
 
 // --- run ---
 
-function runTests(): number {
+function runTests(paths: string[]): number {
   mkdirSync(REPORTS_DIR, { recursive: true });
   const proc = Bun.spawnSync(
     [
       "bun",
       "test",
+      ...paths,
       "--coverage",
       "--coverage-reporter=lcov",
       "--reporter=junit",
@@ -254,10 +257,12 @@ function gitSha(): string {
   return proc.exitCode === 0 ? proc.stdout.toString().trim() : "unknown";
 }
 
-const exitCode = runTests();
+const paths = process.argv.slice(2);
+const exitCode = runTests(paths);
 mkdirSync(REPORTS_DIR, { recursive: true });
 
-const meta = `Generated ${new Date().toISOString()} · commit ${gitSha()} · whole repo`;
+const scope = paths.length > 0 ? paths.join(", ") : "whole repo";
+const meta = `Generated ${new Date().toISOString()} · commit ${gitSha()} · ${scope}`;
 
 if (!existsSync(JUNIT_PATH)) {
   writeFileSync(