fix(dashboard): fix pill counts and Bootstrap UI cleanup

- IMPORTED pill now includes ALREADY_IMPORTED orders in count
- UNINVOICED filter includes ALREADY_IMPORTED orders
- Pill counts (Toate/Importate/Omise/Erori/Nefacturate) always reflect
  full period+search, independent of active status filter
- Nefacturate count computed from SQLite cache across full period,
  not just current page
- Bootstrap UI: design tokens, soft badge pills, consistent font sizes,
  purge inline styles from templates, move badge-pct to style.css

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

api/app/templates/mappings.html

@@ -3,11 +3,6 @@
 {% block nav_mappings %}active{% endblock %}
 
 {% block content %}
-<style>
-.badge-pct { font-size: 0.7rem; padding: 0.1rem 0.35rem; border-radius: 4px; font-weight: 600; }
-.badge-pct.complete { background: #d1fae5; color: #065f46; }
-.badge-pct.incomplete { background: #fef3c7; color: #92400e; }
-</style>
 <div class="d-flex justify-content-between align-items-center mb-4">
     <h4 class="mb-0">Mapari SKU</h4>
     <div>