feat(order-detail): show CODMAT for direct SKUs + mapping validations

- Enrich order detail items with NOM_ARTICOLE data for direct SKUs
  (SKU=CODMAT) that have no ARTICOLE_TERTI entry
- Validate CODMAT exists in nomenclator before saving mapping (400)
- Block redundant self-mapping when SKU is already direct CODMAT (409)
- Show "direct" badge in CODMAT column for direct SKUs
- Show info alert in quick map modal for direct SKUs
- Display backend validation errors inline in modal

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

api/app/routers/sync.py

@@ -317,6 +317,29 @@ def _get_articole_terti_for_skus(skus: set) -> dict:
     return result
 
 
+def _get_nom_articole_for_direct_skus(skus: set) -> dict:
+    """Query NOM_ARTICOLE for SKUs that exist directly as CODMAT (direct mapping)."""
+    from .. import database
+    result = {}
+    sku_list = list(skus)
+    conn = database.get_oracle_connection()
+    try:
+        with conn.cursor() as cur:
+            for i in range(0, len(sku_list), 500):
+                batch = sku_list[i:i+500]
+                placeholders = ",".join([f":s{j}" for j in range(len(batch))])
+                params = {f"s{j}": sku for j, sku in enumerate(batch)}
+                cur.execute(f"""
+                    SELECT codmat, denumire FROM NOM_ARTICOLE
+                    WHERE codmat IN ({placeholders}) AND sters = 0 AND inactiv = 0
+                """, params)
+                for row in cur:
+                    result[row[0]] = row[1] or ""
+    finally:
+        database.pool.release(conn)
+    return result
+
+
 @router.get("/api/sync/order/{order_number}")
 async def order_detail(order_number: str):
     """Get order detail with line items (R9), enriched with ARTICOLE_TERTI data."""
@@ -334,6 +357,23 @@ async def order_detail(order_number: str):
             if sku and sku in codmat_map:
                 item["codmat_details"] = codmat_map[sku]
 
+        # Enrich direct SKUs (SKU=CODMAT in NOM_ARTICOLE, no ARTICOLE_TERTI entry)
+        direct_skus = {item["sku"] for item in items
+                       if item.get("sku") and item.get("mapping_status") == "direct"
+                       and not item.get("codmat_details")}
+        if direct_skus:
+            nom_map = await asyncio.to_thread(_get_nom_articole_for_direct_skus, direct_skus)
+            for item in items:
+                sku = item.get("sku")
+                if sku and sku in nom_map and not item.get("codmat_details"):
+                    item["codmat_details"] = [{
+                        "codmat": sku,
+                        "cantitate_roa": 1,
+                        "procent_pret": 100,
+                        "denumire": nom_map[sku],
+                        "direct": True
+                    }]
+
     # Enrich with invoice data
     order = detail.get("order", {})
     if order.get("factura_numar") and order.get("factura_data"):

api/app/services/mapping_service.py

@@ -159,6 +159,24 @@ def create_mapping(sku: str, codmat: str, cantitate_roa: float = 1, procent_pret
 
     with database.pool.acquire() as conn:
         with conn.cursor() as cur:
+            # Validate CODMAT exists in NOM_ARTICOLE
+            cur.execute("""
+                SELECT COUNT(*) FROM NOM_ARTICOLE
+                WHERE codmat = :codmat AND sters = 0 AND inactiv = 0
+            """, {"codmat": codmat})
+            if cur.fetchone()[0] == 0:
+                raise HTTPException(status_code=400, detail="CODMAT-ul nu exista in nomenclator")
+
+            # Warn if SKU is already a direct CODMAT in NOM_ARTICOLE
+            if sku == codmat:
+                cur.execute("""
+                    SELECT COUNT(*) FROM NOM_ARTICOLE
+                    WHERE codmat = :sku AND sters = 0 AND inactiv = 0
+                """, {"sku": sku})
+                if cur.fetchone()[0] > 0:
+                    raise HTTPException(status_code=409,
+                                        detail="SKU-ul exista direct in nomenclator ca CODMAT, nu necesita mapare")
+
             # Check for active duplicate
             cur.execute("""
                 SELECT COUNT(*) FROM ARTICOLE_TERTI

api/app/static/js/dashboard.js

@@ -478,6 +478,9 @@ function renderCodmatCell(item) {
     }
     if (item.codmat_details.length === 1) {
         const d = item.codmat_details[0];
+        if (d.direct) {
+            return `<code>${esc(d.codmat)}</code> <span class="badge bg-secondary" style="font-size:0.6rem;vertical-align:middle">direct</span>`;
+        }
         return `<code>${esc(d.codmat)}</code>`;
     }
     return item.codmat_details.map(d =>
@@ -596,7 +599,7 @@ async function openDashOrderDetail(orderNumber) {
         if (mobileContainer) {
             mobileContainer.innerHTML = '<div class="detail-item-flat">' + items.map((item, idx) => {
                 const codmatText = item.codmat_details?.length
-                    ? item.codmat_details.map(d => `<code>${esc(d.codmat)}</code>`).join(' ')
+                    ? item.codmat_details.map(d => `<code>${esc(d.codmat)}</code>${d.direct ? ' <span class="badge bg-secondary" style="font-size:0.55rem">direct</span>' : ''}`).join(' ')
                     : `<code>${esc(item.codmat || '–')}</code>`;
                 const valoare = (Number(item.price || 0) * Number(item.quantity || 0)).toFixed(2);
                 return `<div class="dif-item">
@@ -642,9 +645,27 @@ function openQuickMap(sku, productName, orderNumber, itemIdx) {
     const container = document.getElementById('qmCodmatLines');
     container.innerHTML = '';
 
-    // Pre-populate with existing codmat_details if available
+    // Check if this is a direct SKU (SKU=CODMAT in NOM_ARTICOLE)
     const item = (window._detailItems || [])[itemIdx];
     const details = item?.codmat_details;
+    const isDirect = details?.length === 1 && details[0].direct === true;
+    const directInfo = document.getElementById('qmDirectInfo');
+    const saveBtn = document.getElementById('qmSaveBtn');
+
+    if (isDirect) {
+        if (directInfo) {
+            directInfo.innerHTML = `<i class="bi bi-info-circle"></i> SKU = CODMAT direct in nomenclator (<code>${escHtml(details[0].codmat)}</code> — ${escHtml(details[0].denumire || '')}).<br><small class="text-muted">Poti suprascrie cu un alt CODMAT daca e necesar (ex: reambalare).</small>`;
+            directInfo.style.display = '';
+        }
+        if (saveBtn) {
+            saveBtn.textContent = 'Suprascrie mapare';
+        }
+        addQmCodmatLine();
+    } else {
+        if (directInfo) directInfo.style.display = 'none';
+        if (saveBtn) saveBtn.textContent = 'Salveaza';
+
+        // Pre-populate with existing codmat_details if available
         if (details && details.length > 0) {
             details.forEach(d => {
                 addQmCodmatLine({ codmat: d.codmat, cantitate: d.cantitate_roa, procent: d.procent_pret, denumire: d.denumire });
@@ -652,6 +673,7 @@ function openQuickMap(sku, productName, orderNumber, itemIdx) {
         } else {
             addQmCodmatLine();
         }
+    }
 
     new bootstrap.Modal(document.getElementById('quickMapModal')).show();
 }
@@ -762,7 +784,9 @@ async function saveQuickMapping() {
             if (currentQmOrderNumber) openDashOrderDetail(currentQmOrderNumber);
             loadDashOrders();
         } else {
-            alert('Eroare: ' + (data.error || 'Unknown'));
+            const msg = data.detail || data.error || 'Unknown';
+            document.getElementById('qmPctWarning').textContent = msg;
+            document.getElementById('qmPctWarning').style.display = '';
         }
     } catch (err) {
         alert('Eroare: ' + err.message);

api/app/templates/dashboard.html

@@ -192,11 +192,12 @@
                 <button type="button" class="btn btn-sm btn-outline-secondary mt-1" onclick="addQmCodmatLine()" style="font-size:0.8rem; padding:2px 10px">
                     + CODMAT
                 </button>
+                <div id="qmDirectInfo" class="alert alert-info mt-2" style="display:none; font-size:0.85rem; padding:8px 12px;"></div>
                 <div id="qmPctWarning" class="text-danger mt-2" style="display:none;"></div>
             </div>
             <div class="modal-footer">
                 <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Anuleaza</button>
-                <button type="button" class="btn btn-primary" onclick="saveQuickMapping()">Salveaza</button>
+                <button type="button" class="btn btn-primary" id="qmSaveBtn" onclick="saveQuickMapping()">Salveaza</button>
             </div>
         </div>
     </div>
@@ -204,5 +205,5 @@
 {% endblock %}
 
 {% block scripts %}
-<script src="{{ request.scope.get('root_path', '') }}/static/js/dashboard.js?v=15"></script>
+<script src="{{ request.scope.get('root_path', '') }}/static/js/dashboard.js?v=16"></script>
 {% endblock %}