feat: admin settings page UI/UX pass with WordPress-native patterns

- Header: h1 + logo in a wrapping flex row, hr.wp-header-end before the tabs,
  aria-current on the active tab; own CSS/JS enqueued only on this screen.
- Verbindung: ordered "So verbindest du Claude" steps, copy button (core
  clipboard.js + wp.a11y.speak), Site-Health-style status list, German details.
- Zugriff: roles as form-table fieldset, connections with site date format,
  empty-state row, confirm on revoke; ConnectionUsage records last use via
  WP_Application_Passwords::record_application_password_usage (once a day).
- Tools: plain-language legend, counter as inline notice, groups as core
  postboxes (postbox.js toggles, per-user closed state, summary when closed),
  fixed column widths with new "Art" column, submit above and below.
- Protokoll: site-timezone times with UTC tooltip, result icons, filters with
  labels in the list table nav, retention link to Limits.
- Limits: short labels with units and descriptions; snapshot count hidden but
  preserved.

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

tests/Unit/Admin/LogListTableTest.php

@@ -191,10 +191,72 @@ final class LogListTableTest extends TestCase
         $table->single_row(['result' => 'ok']);
         $ok = (string) ob_get_clean();
 
-        self::assertStringContainsString('<tr style=', $partial);
+        self::assertStringContainsString('<tr class="lit-mcp-partial">', $partial);
         self::assertSame('<tr>', substr($ok, 0, 4));
     }
 
+    public function testTimeColumnShowsSiteTimeInWordPressFormatWithUtcAsTitle(): void
+    {
+        Functions\when('get_option')->alias(static fn (string $key) => $key === 'date_format' ? 'd.m.Y' : 'H:i');
+        Functions\when('wp_date')->alias(static fn (string $format, int $ts): string => $format . '@' . $ts);
+        $table = new LogListTable(Mockery::mock(ChangeLog::class), ['ability' => '', 'user_id' => 0]);
+
+        self::assertSame('Zeit', $table->get_columns()['created_at']);
+        $html = $this->column($table, ['created_at' => '2026-09-26 10:39:13'], 'created_at');
+
+        self::assertStringContainsString('d.m.Y H:i@' . gmmktime(10, 39, 13, 9, 26, 2026), $html);
+        self::assertStringContainsString('title="UTC: 2026-09-26 10:39:13"', $html);
+        self::assertSame('–', $this->column($table, ['created_at' => 'kaputt'], 'created_at'));
+    }
+
+    /** @dataProvider results */
+    public function testResultColumnShowsIconAndWord(string $result, string $icon, string $word): void
+    {
+        $table = new LogListTable(Mockery::mock(ChangeLog::class), ['ability' => '', 'user_id' => 0]);
+
+        $html = $this->column($table, ['result' => $result], 'result');
+
+        self::assertStringContainsString('dashicons-' . $icon, $html);
+        self::assertStringContainsString($word, $html);
+    }
+
+    /** @return list<list<string>> */
+    public static function results(): array
+    {
+        return [
+            ['ok', 'yes-alt', 'erfolgreich'],
+            ['partial', 'warning', 'teilweise'],
+            ['error<b>', 'dismiss', 'error&lt;b&gt;'],
+        ];
+    }
+
+    public function testToolColumnIsMutedTextAndTopNavRendersTheGivenFilters(): void
+    {
+        $table = new LogListTable(Mockery::mock(ChangeLog::class), ['ability' => '', 'user_id' => 0], static function (): void {
+            echo '<select name="ability"></select>';
+        });
+
+        self::assertSame(
+            '<span class="lit-mcp-tool-name">lit/x&lt;</span>',
+            $this->column($table, ['ability' => 'lit/x<'], 'ability')
+        );
+
+        ob_start();
+        $table->display();
+        self::assertStringContainsString('<div class="alignleft actions"><select name="ability"></select></div>', (string) ob_get_clean());
+    }
+
+    /** @param array<string, mixed> $item */
+    private function column(LogListTable $table, array $item, string $column): string
+    {
+        $method = 'column_' . $column;
+        if (method_exists($table, $method)) {
+            return (string) (new \ReflectionMethod($table, $method))->invoke($table, $item);
+        }
+
+        return $this->columnDefault($table, $item, $column);
+    }
+
     /** @param array<string, mixed> $item */
     private function columnDefault(LogListTable $table, array $item, string $column): string
     {