Add Tool info links and MCP section to tool cards and preview pages

- Dashboard: add "Tool info" link → preview.php on every tool card footer
- Landing page: convert lt-card <a> to div+onclick, add footer with "Learn more" link and copyable MCP slug pill
- preview.php: add MCP Integration section per tool (slug, copy button, claude_desktop_config.json snippet, login note)
- CSS: lt-card__footer, lt-card__mcp-pill, lt-preview-mcp section styles

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

dashboard.php

@@ -125,6 +125,7 @@ $dashL = [
         'guide_link'      => 'Guide',
         'tech_link'       => 'Technical',
         'open_tool'       => 'Open tool',
+        'tool_info'       => 'Tool info',
     ],
     'no' => [
         'acct_header'     => 'Konto',
@@ -152,6 +153,7 @@ $dashL = [
         'guide_link'      => 'Guide',
         'tech_link'       => 'Teknisk',
         'open_tool'       => 'Åpne verktøy',
+        'tool_info'       => 'Verktøyinfo',
     ],
     'uk' => [
         'acct_header'     => 'Обліковий запис',
@@ -179,6 +181,7 @@ $dashL = [
         'guide_link'      => 'Посібник',
         'tech_link'       => 'Технічний',
         'open_tool'       => 'Відкрити',
+        'tool_info'       => 'Про інструмент',
     ],
     'pl' => [
         'acct_header'     => 'Konto',
@@ -206,6 +209,7 @@ $dashL = [
         'guide_link'      => 'Poradnik',
         'tech_link'       => 'Techniczny',
         'open_tool'       => 'Otwórz',
+        'tool_info'       => 'Info',
     ],
 ];
 $dl = $dashL[$uiLang] ?? $dashL['en'];
@@ -462,9 +466,12 @@ window.DBN_TOOLS_LANG = <?= json_encode($uiLang, JSON_UNESCAPED_UNICODE) ?>;
             </div>
             <p style="margin:0; font-size:.98rem; color:#4b5563; line-height:1.55;"><?= htmlspecialchars($item['description']) ?></p>
             <div class="dash-card-footer">
+                <a href="/preview.php?tool=<?= htmlspecialchars($slug) ?><?= $uiLang !== 'en' ? '&amp;lang=' . urlencode($uiLang) : '' ?>" onclick="event.stopPropagation();"
+                   style="color:#374151; font-size:.88rem; text-decoration:none; white-space:nowrap;"><?= htmlspecialchars($dl['tool_info']) ?></a>
                 <?php if ($docs): ?>
+                <span style="color:#d1d5db;" aria-hidden="true">·</span>
                 <a href="<?= htmlspecialchars($docs[0] . $langSuffix) ?>" onclick="event.stopPropagation();"
-                   style="color:#00205B; font-size:.88rem; font-weight:600; text-decoration:none; white-space:nowrap;"><?= htmlspecialchars($dl['about_link']) ?></a>
+                   style="color:#374151; font-size:.88rem; text-decoration:none; white-space:nowrap;"><?= htmlspecialchars($dl['about_link']) ?></a>
                 <span style="color:#d1d5db;" aria-hidden="true">·</span>
                 <a href="<?= htmlspecialchars($docs[1] . $langSuffix) ?>" onclick="event.stopPropagation();"
                    style="color:#374151; font-size:.88rem; text-decoration:none; white-space:nowrap;"><?= htmlspecialchars($dl['guide_link']) ?></a>