Exclude repository_url from upstream:list default fields

- Add @default-fields annotation to exclude repository_url from default display
- This maintains backward compatibility for automation scripts
- repository_url is still accessible via --fields=repository_url
- Add tests to verify both default behavior and explicit field selection

Updates DEVX-5163

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: namespacebrian

src/Commands/Upstream/ListCommand.php

@@ -33,6 +33,7 @@ class ListCommand extends TerminusCommand
      *     framework: Framework
      *     repository_url: Repository URL
      *     organization: Organization
+     * @default-fields id,label,machine_name,category,type,framework,organization
      * @option all Show all upstreams
      * @option framework DEPRECATED Framework filter
      * @option name DEPRECATED Name filter

tests/Functional/UpstreamCommandsTest.php

@@ -27,6 +27,26 @@ public function testUpstreamListCommand()
         $this->assertArrayHasKey('label', $upstreamInfo, 'An upstream should have "label" field.');
         $this->assertArrayHasKey('machine_name', $upstreamInfo, 'An upstream should have "machine_name" field.');
         $this->assertArrayHasKey('type', $upstreamInfo, 'An upstream should have "type" field.');
+        $this->assertArrayNotHasKey('repository_url', $upstreamInfo, 'An upstream should not have "repository_url" field by default.');
+    }
+
+    /**
+     * Test UpstreamListCommand with repository_url field
+     *
+     * @test
+     * @covers \Pantheon\Terminus\Commands\Upstream\ListCommand
+     *
+     * @group upstream
+     * @group short
+     */
+    public function testUpstreamListCommandWithRepositoryUrl()
+    {
+        $upstreamList = $this->terminusJsonResponse('upstream:list --fields=id,label,repository_url');
+        $this->assertIsArray($upstreamList);
+        $upstreamInfo = array_shift($upstreamList);
+        $this->assertArrayHasKey('id', $upstreamInfo, 'An upstream should have "id" field.');
+        $this->assertArrayHasKey('label', $upstreamInfo, 'An upstream should have "label" field.');
+        $this->assertArrayHasKey('repository_url', $upstreamInfo, 'An upstream should have "repository_url" field when explicitly requested.');
     }
 
     /**