feat(pricing): kit/pachet pricing with price list lookup, replace procent_pret

- Oracle PL/SQL: kit pricing logic with Mode A (distributed discount) and
  Mode B (separate discount line), dual policy support, PRETURI_CU_TVA flag
- Eliminate procent_pret from entire stack (Oracle, Python, JS, HTML)
- New settings: kit_pricing_mode, kit_discount_codmat, price_sync_enabled
- Settings UI: cards for Kit Pricing and Price Sync configuration
- Mappings UI: kit badges with lazy-loaded component prices from price list
- Price sync from orders: auto-update ROA prices when web prices differ
- Catalog price sync: new service to sync all GoMag product prices to ROA
- Kit component price validation: pre-check prices before import
- New endpoint GET /api/mappings/{sku}/prices for component price display
- New endpoints POST /api/price-sync/start, GET status, GET history
- DDL script 07_drop_procent_pret.sql (run after deploy confirmation)

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

api/app/templates/mappings.html

@@ -47,14 +47,6 @@
     </div>
 </div>
 
-<!-- Percentage filter pills -->
-<div class="filter-bar" id="mappingsFilterBar">
-    <button class="filter-pill active d-none d-md-inline-flex" data-pct="all">Toate <span class="filter-count fc-neutral" id="mCntAll">0</span></button>
-    <button class="filter-pill d-none d-md-inline-flex" data-pct="complete">Complete <span class="filter-count fc-green" id="mCntComplete">0</span></button>
-    <button class="filter-pill d-none d-md-inline-flex" data-pct="incomplete">Incomplete <span class="filter-count fc-yellow" id="mCntIncomplete">0</span></button>
-</div>
-<div class="d-md-none mb-2" id="mappingsMobileSeg"></div>
-
 <!-- Top pagination -->
 <div id="mappingsPagTop" class="pag-strip"></div>
 
@@ -110,7 +102,7 @@
                 <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
             </div>
             <div class="modal-body">
-                <p class="text-muted small">Format CSV: sku, codmat, cantitate_roa, procent_pret</p>
+                <p class="text-muted small">Format CSV: sku, codmat, cantitate_roa</p>
                 <input type="file" class="form-control" id="csvFile" accept=".csv">
                 <div id="importResult" class="mt-3"></div>
             </div>
@@ -154,5 +146,5 @@
 {% endblock %}
 
 {% block scripts %}
-<script src="{{ request.scope.get('root_path', '') }}/static/js/mappings.js?v=7"></script>
+<script src="{{ request.scope.get('root_path', '') }}/static/js/mappings.js?v=9"></script>
 {% endblock %}