release: consolidate web simulation and real CV prototype

Add cleaned RealSense/OpenCV CV under cv/ with secret-free example
config, MQTT disabled by default, and canonical README coverage for
web + CV relationship without claiming production integration.

Co-authored-by: Cursor <cursoragent@cursor.com>

cv/journal.py

@@ -0,0 +1,47 @@
+"""JSONL-журнал решений классификатора — метрики для отчёта и защиты.
+
+Каждая строка — одно зафиксированное решение (LOCK):
+время, зона, габариты, circle_ratio, флаг «неуверенно», причина.
+
+Анализ (корректность, доля неуверенных, распределение зон):
+  .venv/bin/python -c "
+  import json;
+  rows=[json.loads(l) for l in open('logs/decisions.jsonl')];
+  from collections import Counter;
+  print(Counter(r['zone'] for r in rows));
+  print('uncertain:', sum(r['uncertain'] for r in rows), '/', len(rows))"
+"""
+
+from __future__ import annotations
+
+import json
+import time
+from pathlib import Path
+
+from classify import ClassificationResult
+
+
+def append_decision(
+    path: str | Path,
+    result: ClassificationResult,
+    uncertain: bool = False,
+    source: str = "main",
+    track_id: int | None = None,
+) -> None:
+    entry = {
+        "track_id": track_id,
+        "ts": time.strftime("%Y-%m-%dT%H:%M:%S"),
+        "ts_ms": int(time.time() * 1000),
+        "zone": result.category.zone,
+        "category": result.category.value,
+        "label_ru": result.category.ru_label,
+        "dims_mm": [round(float(x), 1) for x in result.dims_sorted_mm],
+        "circle_ratio": round(float(result.circle_ratio), 4),
+        "uncertain": bool(uncertain),
+        "reason": result.reason,
+        "source": source,
+    }
+    p = Path(path)
+    p.parent.mkdir(parents=True, exist_ok=True)
+    with open(p, "a", encoding="utf-8") as f:
+        f.write(json.dumps(entry, ensure_ascii=False) + "\n")