perf+calitate sugestii k-NN: matvec numpy, vot top-5 cu prag calibrat, indicatori import

- embeddings: corpus ca matrice numpy cu norme precalculate; suggest_nearest
  = un matvec (~0.6ms/query fata de ~500ms cosine pur-Python la 17k vectori)
- enrich_suggestions: vot ponderat cu similaritatea pe top-5 vecini (NUL =
  eticheta proprie); prag 0.5 -> 0.88, calibrat LOO pe corpusul SILVER
  (tools/mapare-llm/knn_calibrate.py): precizie 90.5% -> 93.1%, cod gresit
  preselectat 7.2% -> 4.7%; sub prag abtinere -> preselectie fuzzy
- UI: codul sugerat de sistem afisat explicit cu sursa si scorul, separat de
  lista fuzzy ("potrivire text"); indicator de progres reparat pe upload
  (display:inline anula .htmx-indicator) si adaugat pe pasii 2->3 si
  "Salveaza maparile"

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/web/routes.py

@@ -1392,7 +1392,10 @@ def _nemapate_pentru_submission(row, nomenclator: list[dict], conn=None) -> list
             "denumire": item.get("denumire"),
             "suggestions": suggest_codes(item.get("denumire"), nomenclator, limit=5),
             "sugestie_principala": None,
-            "surse_sugestie": {"gold_partajat": None, "silver": None, "embedding": None, "nul": False},
+            "surse_sugestie": {
+                "gold_partajat": None, "silver": None,
+                "embedding": None, "embedding_similaritate": None, "nul": False,
+            },
         }
         # L14-S6: imbogatire cu GOLD partajat > SILVER > embeddings (SUGGESTION-ONLY, #13)
         if conn is not None:
@@ -3034,7 +3037,10 @@ def _collect_unmapped_ops(preview_rows: list[dict], nomenclator: list[dict], con
         entry["suggestions"] = suggest_codes(entry["denumire"], nomenclator, limit=5)
         # Init default pe FIECARE entry -> contract template identic (conn=None inclus).
         entry["sugestie_principala"] = None
-        entry["surse_sugestie"] = {"gold_partajat": None, "silver": None, "embedding": None, "nul": False}
+        entry["surse_sugestie"] = {
+            "gold_partajat": None, "silver": None,
+            "embedding": None, "embedding_similaritate": None, "nul": False,
+        }
         # L14-S6: imbogatire cu GOLD partajat > SILVER > embeddings (SUGGESTION-ONLY, #13)
         if conn is not None:
             enriched = enrich_suggestions(conn, entry["denumire"])

app/web/templates/_mapari.html

@@ -62,10 +62,17 @@
               {% else %}
                 <span class="sugg-sursa sugg-sursa--similar" title="operatie similara deja vazuta (k-NN/exact)">similar</span>
               {% endif %}
+              {# Codul sugerat de sistem, explicit (nu doar preselectat in dropdown);
+                 pentru k-NN si scorul de similaritate. #}
+              <strong>{{ e.sugestie_principala.cod_prestatie }}</strong>
+              {%- if e.sugestie_principala.sursa == 'embedding' and e.surse_sugestie.embedding_similaritate %}
+              ({{ (e.surse_sugestie.embedding_similaritate * 100)|round|int }}%)
+              {%- endif %}
             {% elif e.surse_sugestie and e.surse_sugestie.nul %}
               <span class="sugg-sursa sugg-sursa--nul" title="pare non-operatie (ITP/plata/discount...)">non-operatie</span>
             {% endif %}
             {% if e.suggestions %}
+              {% if e.sugestie_principala or (e.surse_sugestie and e.surse_sugestie.nul) %}<span class="muted">· potrivire text:</span>{% endif %}
               {% for s in e.suggestions[:3] %}
                 <span class="sugg">{{ s.cod_prestatie }} ({{ s.score|round|int }}%)</span>{% if not loop.last %}, {% endif %}
               {% endfor %}

app/web/templates/_mapcoloane.html

@@ -65,7 +65,8 @@
 
     <form hx-post="/_import/{{ import_id }}/mapare-coloane"
           hx-target="#import-section"
-          hx-swap="outerHTML">
+          hx-swap="outerHTML"
+          hx-indicator="#mapcol-spinner">
       <input type="hidden" name="csrf_token" value="{{ csrf_token or '' }}">
 
       <div style="margin-bottom:8px; display:flex; align-items:center; gap:10px; flex-wrap:wrap;">
@@ -162,6 +163,11 @@
                 style="min-height:44px; padding:10px 24px; font-size:var(--fs-md);{% if not prima_inreg %} opacity:0.5; cursor:not-allowed;{% endif %}">
           Salveaza si continua la preview
         </button>
+        <span id="mapcol-spinner" class="htmx-indicator muted"
+              style="font-size:var(--fs-sm);" role="status">
+          <span class="spin-dot" aria-hidden="true"></span>
+          se verifica randurile si se calculeaza sugestiile...
+        </span>
         {% if not prima_inreg %}
         <span style="font-size:var(--fs-xs); color:var(--err);">
           Fisierul nu contine randuri de date — incarca un fisier cu cel putin o inregistrare.

app/web/templates/_preview_import.html

@@ -81,7 +81,8 @@
         <span class="s-ok">ok</span> si maparea se retine pentru fisierele viitoare.
       </p>
       <form hx-post="/_import/{{ import_id }}/mapare-operatii"
-            hx-target="#import-section" hx-swap="outerHTML">
+            hx-target="#import-section" hx-swap="outerHTML"
+            hx-indicator="#mapop-spinner">
         <input type="hidden" name="csrf_token" value="{{ csrf_token or '' }}">
         {% for e in unmapped_ops %}
         {%- set top = e.suggestions[0] if e.suggestions else None -%}
@@ -106,9 +107,16 @@
                 {% else %}
                 <span class="sugg-sursa sugg-sursa--similar" title="operatie similara deja vazuta (k-NN/exact)">similar</span>
                 {% endif %}
+                {# Codul sugerat de sistem, explicit (nu doar preselectat in dropdown);
+                   pentru k-NN si scorul de similaritate. #}
+                <strong>{{ e.sugestie_principala.cod_prestatie }}</strong>
+                {%- if e.sugestie_principala.sursa == 'embedding' and e.surse_sugestie.embedding_similaritate %}
+                ({{ (e.surse_sugestie.embedding_similaritate * 100)|round|int }}%)
+                {%- endif %}
               {% elif e.surse_sugestie and e.surse_sugestie.nul %}
                 <span class="sugg-sursa sugg-sursa--nul" title="pare non-operatie (ITP/plata/discount...)">non-operatie</span>
               {% endif %}
+              {% if e.suggestions and (e.sugestie_principala or (e.surse_sugestie and e.surse_sugestie.nul)) %}<span class="muted">· potrivire text:</span>{% endif %}
               {% for s in e.suggestions[:3] %}
                 <span class="sugg">{{ s.cod_prestatie }} ({{ s.score|round|int }}%)</span>{% if not loop.last %}, {% endif %}
               {% endfor %}
@@ -127,8 +135,13 @@
           </div>
         </div>
         {% endfor %}
-        <div style="margin-top:12px;">
+        <div style="margin-top:12px; display:flex; align-items:center; gap:12px;">
           <button type="submit" style="min-height:44px;">Salveaza maparile</button>
+          <span id="mapop-spinner" class="htmx-indicator muted"
+                style="font-size:var(--fs-sm);" role="status">
+            <span class="spin-dot" aria-hidden="true"></span>
+            se salveaza si se recalculeaza preview-ul...
+          </span>
         </div>
       </form>
     </div>

app/web/templates/_upload.html

@@ -122,9 +122,12 @@
       </p>
       {% endif %}
 
+      {# FARA display in stilul inline: ar suprascrie .htmx-indicator{display:none}
+         si indicatorul ar ramane vizibil permanent (deci invizibil ca progres). #}
       <span id="upload-spinner" class="htmx-indicator muted"
-            style="font-size:var(--fs-sm); margin-top:6px; display:inline;">
-        se parseaza fisierul...
+            style="font-size:var(--fs-sm); margin-top:6px;" role="status">
+        <span class="spin-dot" aria-hidden="true"></span>
+        se parseaza fisierul si se pregatesc sugestiile...
       </span>
     </form>
   </div>

app/web/templates/base.html

@@ -176,6 +176,11 @@
                   flex-wrap:wrap; z-index:10; }
     /* Indicator HTMX — ascuns pana la request */
     .htmx-indicator { display:none; }
+    /* Cerc rotitor pentru indicatorii de procesare (import: parsare + sugestii) */
+    .spin-dot { display:inline-block; width:13px; height:13px; border:2px solid var(--line);
+                border-top-color:var(--accent); border-radius:50%; vertical-align:-2px;
+                margin-right:6px; animation:spin-dot .7s linear infinite; }
+    @keyframes spin-dot { to { transform:rotate(360deg); } }
     /* Selector tema stil pill — icon + eticheta temei curente.
        Eticheta se ascunde pe <=560px (spatiu ingust), ramane iconita. */
     .tema-btn { display:inline-flex; align-items:center; gap:6px; height:36px; padding:0 12px;