refactor(run_id): 提炼RunId::short用于warning短展示并加单测

tests/Unit/RunIdShortTest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Tests\Unit;
+
+use App\Support\RunId;
+use PHPUnit\Framework\TestCase;
+
+class RunIdShortTest extends TestCase
+{
+    public function test_short_should_keep_original_when_not_long_enough(): void
+    {
+        $this->assertSame('BAS123456', RunId::short('BAS123456', 6, 4));
+    }
+
+    public function test_short_should_shorten_with_ellipsis(): void
+    {
+        $this->assertSame('BAS202…0001', RunId::short('BAS202603171234560001', 6, 4));
+    }
+}