modificados: docs/changelog.md (sin IDs)

modificados:     tests/System/Release/ScriptJobDisplayNameReleaseTest.php (serial + diagnostic)

Author: Test

tests/System/Release/ScriptJobDisplayNameReleaseTest.php

@@ -81,16 +81,36 @@ public function two_script_jobs_with_same_executable_are_distinguishable(): void
 
         file_put_contents($this->configPath, $this->configurationFileBuilder->buildV3Php());
 
-        passthru("$this->githooks flow shards --config=$this->configPath 2>&1", $exitCode);
+        $stdoutPath = self::TESTS_PATH . '/diag-script-stdout.log';
+        $stderrPath = self::TESTS_PATH . '/diag-script-stderr.log';
+        $cmd = "$this->githooks flow shards --config=$this->configPath > $stdoutPath 2> $stderrPath";
+        exec($cmd, $unused, $exitCode);
 
-        $this->assertEquals(0, $exitCode);
-        $output = $this->getActualOutput();
-        $this->assertStringContainsString('shard_a - OK', $output);
-        $this->assertStringContainsString('shard_b - OK', $output);
+        $stdout = (string) file_get_contents($stdoutPath);
+        $stderr = (string) file_get_contents($stderrPath);
+        @unlink($stdoutPath);
+        @unlink($stderrPath);
+
+        if ($exitCode !== 0) {
+            $configContent = (string) file_get_contents($this->configPath);
+            fwrite(
+                STDERR,
+                "\n=== ScriptJobDisplayNameReleaseTest diagnostic ===\n"
+                . "exitCode: $exitCode\n"
+                . "--- config ---\n$configContent\n"
+                . "--- stdout ---\n$stdout\n"
+                . "--- stderr ---\n$stderr\n"
+                . "=== end diagnostic ===\n"
+            );
+        }
+
+        $this->assertSame(0, $exitCode, 'flow shards must exit 0; see diagnostic dump above for stdout/stderr/config');
+        $this->assertStringContainsString('shard_a - OK', $stdout);
+        $this->assertStringContainsString('shard_b - OK', $stdout);
         // The pre-fix output would have shown "/bin/echo identical-runner - OK" twice.
         $this->assertLessThanOrEqual(
             1,
-            substr_count($output, '/bin/echo identical-runner - OK'),
+            substr_count($stdout, '/bin/echo identical-runner - OK'),
             'Two script jobs were shown with their executable instead of their job key.'
         );
     }