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

tests/test_probe.py

@@ -0,0 +1,63 @@
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parent.parent
+VENDOR = ROOT / "vendor" / "syncpulse-scale-bridge"
+for path in (str(ROOT), str(VENDOR)):
+    if path not in sys.path:
+        sys.path.insert(0, path)
+
+from cantarire import probe  # noqa: E402
+from scale_bridge.serialio import open_real  # noqa: E402
+from scale_bridge.simulator import SimulatorBank, frame_for  # noqa: E402
+
+
+def test_decode_recognises_toledo_stream():
+    frame = frame_for("toledo_cont", 12.345, True)
+    guesses = probe.decode(frame * 4)
+    ids = [g["protocol"] for g in guesses]
+    assert "toledo_cont" in ids
+    best = guesses[0]
+    assert best["protocol"] == "toledo_cont"
+    assert best["value"] == pytest.approx(12.345, abs=1e-3)
+    assert best["unit"] == "kg"
+
+
+def test_decode_unknown_binary_returns_nothing():
+    assert probe.decode(b"\xf0\x01\x02\x03") == []
+
+
+def test_probe_port_reads_simulated_scale():
+    opener = SimulatorBank("toledo_cont").opener(open_real)
+    result = probe.probe_port("COM90", 9600, "8N1", 1.2, opener=opener)
+    assert result["ok"] is True, result
+    assert result["bytes"] > 0
+    assert result["frames"]
+    assert any(g["protocol"] == "toledo_cont" for g in result["guesses"])
+    assert result["settings"].startswith("COM90 9600 8N1")
+
+
+def test_probe_port_rejects_bad_framing():
+    with pytest.raises(probe.ProbeError):
+        probe.probe_port("COM90", 9600, "9X9", 1)
+
+
+def test_probe_port_sweep_reports_hits():
+    opener = SimulatorBank("toledo_cont").opener(open_real)
+    rows = probe.sweep("COM90", seconds=0.6, framings=("8N1",), bauds=(9600, 4800),
+                       opener=opener)
+    hits = [row for row in rows if row.get("bytes")]
+    assert hits
+    assert any(g["protocol"] == "toledo_cont" for g in hits[0]["guesses"])
+
+
+def test_save_capture_uses_one_frame_per_line(tmp_path):
+    frames = [{"hex": "01 02 03"}, {"hex": "AA BB"}]
+    target = probe.save_capture(tmp_path, "bizerba bc800", frames)
+    assert target.exists()
+    assert target.read_text(encoding="ascii").splitlines() == ["01 02 03", "AA BB"]
+    assert "bizerba-bc800" in target.name