fix: admin UI review round 1 (S47) - Art labels, usage only on success, result fallback

- Art column: only lit/media-delete and lit/divi-delete say "löscht",
  lit/post-trash "Papierkorb", other destructive tools "überschreibt".
- ConnectionUsage records only responses with status < 400 (mcp-oauth answers
  auth failures with WP_REST_Response 401, not WP_Error).
- Log result column: translated "unbekannt" instead of the raw value.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tests/Unit/Admin/ToolsTabTest.php

@@ -255,16 +255,45 @@ final class ToolsTabTest extends TestCase
         $registry = new IntegrationRegistry($this->integration('media', [
             ['lit/media-preview', true, true],
             ['lit/media-upload', false, false],
-            ['lit/media-delete', false, false, true],
         ]));
 
         $html = $this->render([], $registry);
 
         self::assertStringContainsString('<th scope="col" class="column-kind">Art</th>', $html);
-        self::assertStringContainsString('liest', $this->row($html, 'lit/media-preview'));
-        self::assertStringContainsString('schreibt', $this->row($html, 'lit/media-upload'));
-        self::assertStringContainsString('löscht', $this->row($html, 'lit/media-delete'));
-        self::assertStringNotContainsString('schreibt', $this->row($html, 'lit/media-delete'));
+        self::assertStringContainsString('dashicons-visibility', $this->row($html, 'lit/media-preview'));
+        self::assertStringContainsString('>liest<', $this->row($html, 'lit/media-preview'));
+        self::assertStringContainsString('dashicons-edit', $this->row($html, 'lit/media-upload'));
+        self::assertStringContainsString('>schreibt<', $this->row($html, 'lit/media-upload'));
+    }
+
+    /**
+     * "destructive" is a broad hint (deleting, replacing, swapping) – only explicit deletes say "löscht".
+     *
+     * @dataProvider destructiveAbilities
+     */
+    public function testArtColumnForEveryDestructiveAbility(string $name, string $icon, string $word): void
+    {
+        $registry = new IntegrationRegistry($this->integration('wordpress', [[$name, false, false, true]]));
+
+        $row = $this->row($this->render([], $registry), $name);
+
+        self::assertStringContainsString('dashicons-' . $icon, $row);
+        self::assertStringContainsString('>' . $word . '<', $row);
+    }
+
+    /** @return list<list<string>> */
+    public static function destructiveAbilities(): array
+    {
+        return [
+            ['lit/media-delete', 'trash', 'löscht'],
+            ['lit/divi-delete', 'trash', 'löscht'],
+            ['lit/post-trash', 'trash', 'Papierkorb'],
+            ['lit/post-replace-with-copy', 'update', 'überschreibt'],
+            ['lit/revision-restore', 'update', 'überschreibt'],
+            ['lit/menu-set-items', 'update', 'überschreibt'],
+            ['lit/menu-assign-location', 'update', 'überschreibt'],
+            ['lit/divi-replace-text', 'update', 'überschreibt'],
+        ];
     }
 
     public function testToolCellShowsLabelAndTheNameAsMutedTextWithALabelledSelect(): void