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/routes/components.py

@@ -0,0 +1,58 @@
+"""Administrarea componentelor cantarite."""
+from __future__ import annotations
+
+from flask import Blueprint, flash, redirect, render_template, request, url_for
+
+from ..repositories import (
+    ValidationError,
+    create_component,
+    delete_component,
+    get_component,
+    list_components,
+    update_component,
+)
+
+bp = Blueprint("components", __name__, url_prefix="/componente")
+
+
+@bp.get("")
+def index():
+    return render_template("components/list.html",
+                           components=list_components(include_inactive=True))
+
+
+@bp.route("/nou", methods=["GET", "POST"])
+def create():
+    if request.method == "POST":
+        try:
+            create_component(request.form)
+            flash("Componentul a fost adaugat.", "success")
+            return redirect(url_for("components.index"))
+        except ValidationError as exc:
+            flash(str(exc), "error")
+    return render_template("components/form.html", component=dict(request.form), is_new=True)
+
+
+@bp.route("/<int:component_id>/editare", methods=["GET", "POST"])
+def edit(component_id: int):
+    component = get_component(component_id)
+    if component is None:
+        flash("Componentul nu exista.", "error")
+        return redirect(url_for("components.index"))
+
+    if request.method == "POST":
+        try:
+            update_component(component_id, request.form)
+            flash("Componentul a fost actualizat.", "success")
+            return redirect(url_for("components.index"))
+        except ValidationError as exc:
+            flash(str(exc), "error")
+            component = {**component, **dict(request.form)}
+    return render_template("components/form.html", component=component, is_new=False)
+
+
+@bp.post("/<int:component_id>/stergere")
+def remove(component_id: int):
+    delete_component(component_id)
+    flash("Componentul a fost sters sau dezactivat (daca e folosit intr-o reteta).", "success")
+    return redirect(url_for("components.index"))