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/base.html

@@ -0,0 +1,77 @@
+<!doctype html>
+<html lang="ro">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>{% block title %}Cântărire și etichetare{% endblock %}</title>
+  <link rel="stylesheet" href="{{ url_for('static', filename='css/app.css') }}">
+  {% block head %}{% endblock %}
+</head>
+<body>
+{% set admin_blueprints = ['history', 'recipes', 'components', 'label_templates', 'fields',
+                           'monitor'] %}
+{% set in_settings = request.blueprint in admin_blueprints
+                      or request.endpoint == 'main.settings_page' %}
+<header class="topbar">
+  <a class="brand" href="{{ url_for('main.dashboard') }}">
+    <span class="brand-mark">CE</span>
+    <span class="brand-text">Cântărire &amp; Etichetare</span>
+  </a>
+  <nav class="nav">
+    <a href="{{ url_for('main.dashboard') }}"
+       class="{{ 'active' if request.endpoint == 'main.dashboard' }}">Cântărire</a>
+    <a href="{{ url_for('main.settings_page') }}"
+       class="{{ 'active' if in_settings }}">Setări</a>
+  </nav>
+  <button class="qz-pill" type="button" data-qz-pill data-qz-connect
+          title="Starea conexiunii QZ Tray">
+    <span class="qz-dot"></span>
+    <span data-qz-status>QZ Tray: se verifică…</span>
+  </button>
+</header>
+
+{% if in_settings %}
+<nav class="subnav" aria-label="Secțiuni de administrare">
+  <div class="subnav-inner">
+    <a href="{{ url_for('main.settings_page') }}"
+       class="{{ 'active' if request.endpoint == 'main.settings_page' }}">Generale</a>
+    <a href="{{ url_for('components.index') }}"
+       class="{{ 'active' if request.blueprint == 'components' }}">Componente</a>
+    <a href="{{ url_for('recipes.index') }}"
+       class="{{ 'active' if request.blueprint == 'recipes' }}">Produse finite</a>
+    <a href="{{ url_for('label_templates.index') }}"
+       class="{{ 'active' if request.blueprint == 'label_templates' }}">Șabloane</a>
+    <a href="{{ url_for('fields.index') }}"
+       class="{{ 'active' if request.blueprint == 'fields' }}">Câmpuri</a>
+    <a href="{{ url_for('history.index') }}"
+       class="{{ 'active' if request.blueprint == 'history' }}">Istoric</a>
+    <a href="{{ url_for('monitor.index') }}"
+       class="{{ 'active' if request.blueprint == 'monitor' }}">Monitor serial</a>
+  </div>
+</nav>
+{% endif %}
+
+<main class="container">
+  {% with messages = get_flashed_messages(with_categories=true) %}
+    {% if messages %}
+      <div class="flash-stack">
+        {% for category, message in messages %}
+          <div class="flash flash-{{ category }}">{{ message }}</div>
+        {% endfor %}
+      </div>
+    {% endif %}
+  {% endwith %}
+
+  {% block content %}{% endblock %}
+</main>
+
+<footer class="footer">
+  <span>Cântărire &amp; Etichetare v{{ app_version }}</span>
+  <span>Produse finite · SyncPulse Scale Bridge · QZ Tray</span>
+</footer>
+
+{% block scripts %}{% endblock %}
+<script src="{{ url_for('static', filename='js/vendor/qz-tray.js') }}"></script>
+<script src="{{ url_for('static', filename='js/qz-print.js') }}"></script>
+</body>
+</html>