Initial commit: aplicatie de cantarire si etichetare

Aplicatie Flask + SQLite pentru productie alimentara: cantarirea
componentelor unui produs finit si tiparirea etichetei prin QZ Tray.

- produse finite (retete) formate din componente cantarite
- designer vizual de etichete (mm/px, zona sigura, campuri variabile,
  cod QR cu continut din mai multe bucati)
- legare produs finit -> sablon de eticheta
- navigare pe doua taburi: Cantarire / Setari
- administrare: componente, produse finite, sabloane, campuri, istoric
- backup, resetare baza de date, checklist de pregatire, /healthz
- CLI de administrare si serviciu systemd pentru productie
- vendor/syncpulse-scale-bridge (GPL-3.0-or-later) pentru citirea cantarului

cantarire/templates/history/list.html

@@ -0,0 +1,100 @@
+{% extends "base.html" %}
+{% block title %}Istoric produse finite{% endblock %}
+
+{% block content %}
+<section class="page-head">
+  <div>
+    <h1>Istoric produse finite</h1>
+    <p class="subtitle">Filtrează, verifică și exportă pachetele finalizate.</p>
+  </div>
+</section>
+
+<section class="card">
+  <form method="get" class="filters">
+    <div class="field">
+      <label for="date_from">De la</label>
+      <input id="date_from" name="date_from" type="date" value="{{ filters.date_from }}">
+    </div>
+    <div class="field">
+      <label for="date_to">Până la</label>
+      <input id="date_to" name="date_to" type="date" value="{{ filters.date_to }}">
+    </div>
+    <div class="field">
+      <label for="recipe_id">Produs finit</label>
+      <select id="recipe_id" name="recipe_id">
+        <option value="">— toate —</option>
+        {% for r in recipes %}
+        <option value="{{ r.id }}" {{ 'selected' if filters.recipe_id == r.id }}>{{ r.code }} · {{ r.name }}</option>
+        {% endfor %}
+      </select>
+    </div>
+    <div class="field">
+      <label for="status">Stare</label>
+      <select id="status" name="status">
+        <option value="">— toate —</option>
+        <option value="done" {{ 'selected' if filters.status == 'done' }}>finalizat</option>
+        <option value="open" {{ 'selected' if filters.status == 'open' }}>în lucru</option>
+        <option value="void" {{ 'selected' if filters.status == 'void' }}>anulat</option>
+      </select>
+    </div>
+    <div class="field grow">
+      <label for="q">Căutare</label>
+      <input id="q" name="q" type="search" value="{{ filters.query }}" placeholder="produs, lot, operator…">
+    </div>
+    <div class="field actions-field">
+      <button class="btn primary" type="submit">Filtrează</button>
+      <a class="btn" href="{{ url_for('history.index') }}">Resetează</a>
+    </div>
+  </form>
+</section>
+
+<section class="card">
+  <div class="card-head">
+    <h2>{{ packages|length }} pachete · total {{ total }}</h2>
+    <a class="btn ghost"
+       href="{{ url_for('history.export_csv', date_from=filters.date_from, date_to=filters.date_to, recipe_id=filters.recipe_id or '', status=filters.status, q=filters.query) }}">Export CSV</a>
+  </div>
+
+  {% if packages %}
+  <div class="table-wrap">
+    <table class="table">
+      <thead>
+        <tr>
+          <th>Data</th><th>Produs finit</th><th>Componente</th><th class="num">Total</th>
+          <th>Lot</th><th>Operator</th><th>Stare</th><th>Tipărit</th><th></th>
+        </tr>
+      </thead>
+      <tbody>
+        {% for p in packages %}
+        <tr class="{{ 'row-muted' if p.status != 'done' }}">
+          <td class="nowrap">{{ (p.completed_at or p.created_at)|dt }}</td>
+          <td>{{ p.recipe_code }} · {{ p.recipe_name }}</td>
+          <td class="muted small">{{ p.item_summary or "-" }}</td>
+          <td class="num">{{ (p.total_weight or 0)|weight }} {{ p.unit }}</td>
+          <td>{{ p.lot or "-" }}</td>
+          <td>{{ p.operator or "-" }}</td>
+          <td>
+            {% if p.status == "done" %}<span class="badge ok">finalizat</span>
+            {% elif p.status == "open" %}<span class="badge warn">în lucru</span>
+            {% else %}<span class="badge err">anulat</span>{% endif %}
+          </td>
+          <td class="nowrap">
+            {% if p.printed_at %}<span class="badge ok">{{ p.print_count }}×</span>
+            {% else %}<span class="muted">—</span>{% endif %}
+          </td>
+          <td class="right">
+            {% if p.status == "done" %}
+            <a class="link" target="_blank" rel="noopener"
+               href="{{ url_for('printing.print_label', package_id=p.id, auto='0') }}">Etichetă</a>
+            {% endif %}
+          </td>
+        </tr>
+        {% endfor %}
+      </tbody>
+    </table>
+  </div>
+  {% else %}
+  <p class="muted">Nicio înregistrare pentru filtrele selectate.</p>
+  {% endif %}
+</section>
+{% endblock %}