feat: broaden tests signal to PHP, Ruby, C#

File regex now also recognises *Test.php (PHPUnit), *_test.rb /
*_spec.rb (Minitest / RSpec), and *Tests?.cs (xUnit / NUnit / MSTest).
Repos that nest tests in subdirectories (e.g. ASP.NET Core, Rails)
now correctly hit the test signal even without a recognised root-level
test directory.

Sibling repos (agent-friendly-action, agent-friendly-skill) re-vendored
and logged under their CHANGELOG.md "Unreleased" sections per AGENTS.md.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hsnice16

lib/scoring/signals/tests.ts

@@ -6,7 +6,7 @@ import type { Signal } from "./types";
 
 const DIRS = ["tests", "test", "__tests__", "spec", "specs", "Tests", "src/test"];
 const FILE_RE =
-  /(^|\/)(.*\.test\.|.*\.spec\.|test_.*\.py$|.*_test\.go$|.*_test\.rs$|.*Test\.java$|.*Tests?\.kt$|.*_test\.exs$|.*_test\.dart$|.*Spec\.scala$|.*Test\.scala$)/;
+  /(^|\/)(.*\.test\.|.*\.spec\.|test_.*\.py$|.*_test\.go$|.*_test\.rs$|.*Test\.java$|.*Tests?\.kt$|.*_test\.exs$|.*_test\.dart$|.*Spec\.scala$|.*Test\.scala$|.*Test\.php$|.*_test\.rb$|.*_spec\.rb$|.*Tests?\.cs$)/;
 
 export const tests: Signal = {
   id: "tests",

tests/signals/tests.test.ts

@@ -83,4 +83,24 @@ describe("tests signal", () => {
     fixture = makeFixture({ "src/main/scala/FooSpec.scala": "class FooSpec {}" });
     assert.equal(testsSignal.check(fixture).pass, 0.7);
   });
+
+  test("pass=0.7 for a PHP *Test.php file", () => {
+    fixture = makeFixture({ "src/FooTest.php": "<?php class FooTest {}" });
+    assert.equal(testsSignal.check(fixture).pass, 0.7);
+  });
+
+  test("pass=0.7 for a Ruby *_test.rb file (Minitest)", () => {
+    fixture = makeFixture({ "lib/foo_test.rb": "require 'minitest'" });
+    assert.equal(testsSignal.check(fixture).pass, 0.7);
+  });
+
+  test("pass=0.7 for a Ruby *_spec.rb file (RSpec)", () => {
+    fixture = makeFixture({ "lib/foo_spec.rb": "describe Foo do\nend" });
+    assert.equal(testsSignal.check(fixture).pass, 0.7);
+  });
+
+  test("pass=0.7 for a C# *Tests.cs file", () => {
+    fixture = makeFixture({ "src/Foo/FooTests.cs": "class FooTests {}" });
+    assert.equal(testsSignal.check(fixture).pass, 0.7);
+  });
 });