feat: v3.4.0 — OpenPanel plugin public release (42 tools)

OpenPanel product analytics plugin fully reviewed, tested, and published.
Works with both self-hosted and cloud (openpanel.dev) instances.

- 42 tools: event tracking, data export, analytics, project/client management
- All tools use public REST APIs (Track, Export, Insights, Manage)
- Client modes: write (tracking), read (analytics), root (full access)
- Service page with description, setup notes, WordPress plugin download
- Dynamic URL hints in Add Site form
- 62 unit tests
- ENABLED_PLUGINS default now includes openpanel

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

core/templates/dashboard/service.html

@@ -31,6 +31,31 @@
         </a>
     </div>
 
+    <!-- Description & Notes -->
+    {% if service.description %}
+    <div class="bg-white dark:bg-gray-800 rounded-xl border border-gray-200 dark:border-gray-700 p-6">
+        {% if lang == 'fa' and service.description.fa %}
+        <p class="text-sm text-gray-600 dark:text-gray-300 leading-relaxed" dir="rtl">{{ service.description.fa }}</p>
+        {% elif service.description.en %}
+        <p class="text-sm text-gray-600 dark:text-gray-300 leading-relaxed">{{ service.description.en }}</p>
+        {% endif %}
+
+        {% set notes_key = 'notes_fa' if lang == 'fa' else 'notes_en' %}
+        {% if service.description[notes_key] %}
+        <ul class="mt-4 space-y-2{% if lang == 'fa' %} text-right{% endif %}" {% if lang == 'fa' %}dir="rtl"{% endif %}>
+            {% for note in service.description[notes_key] %}
+            <li class="flex items-start gap-2 text-sm text-gray-500 dark:text-gray-400">
+                <svg class="w-4 h-4 text-primary-400 mt-0.5 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                </svg>
+                <span>{{ note|safe }}</span>
+            </li>
+            {% endfor %}
+        </ul>
+        {% endif %}
+    </div>
+    {% endif %}
+
     <!-- Overview Cards -->
     <div class="grid grid-cols-1 md:grid-cols-3 gap-6">
         <!-- Tools Count -->