feat: implement pngx-controller with Gitea CI/CD deployment

- Full FastAPI sync engine: master→replica document sync via paperless REST API
- Web UI: dashboard, replicas, logs, settings (Jinja2 + HTMX + Pico CSS)
- APScheduler background sync, SSE live log stream, Prometheus metrics
- Fernet encryption for API tokens at rest
- pngx.env credential file: written on save, pre-fills forms on load
- Dockerfile with layer-cached uv build, Python healthcheck
- docker-compose with host networking for Tailscale access
- Gitea Actions workflow: version bump, secret injection, docker compose deploy

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

app/templates/partials/log_table.html

@@ -0,0 +1,28 @@
+{% if logs %}
+<div class="overflow-auto">
+<table>
+  <thead>
+    <tr>
+      <th>Time</th>
+      <th>Level</th>
+      <th>Replica</th>
+      <th>Doc ID</th>
+      <th>Message</th>
+    </tr>
+  </thead>
+  <tbody>
+    {% for log in logs %}
+    <tr class="log-entry-{{ log.level or 'info' }}">
+      <td><small>{{ log.created_at.strftime('%Y-%m-%d %H:%M:%S') if log.created_at else '' }}</small></td>
+      <td><span class="badge badge-{{ log.level or 'info' }}">{{ log.level or 'info' }}</span></td>
+      <td>{{ log.replica_id or '' }}</td>
+      <td>{{ log.doc_id or '' }}</td>
+      <td>{{ log.message or '' }}</td>
+    </tr>
+    {% endfor %}
+  </tbody>
+</table>
+</div>
+{% else %}
+<p><small class="muted">No log entries.</small></p>
+{% endif %}