Add industry filter to recommendations and fix verify button width.

Show category, turnover, and per-industry counts; clarify volume is in lots. Prevent trade-save button from stretching full column width.

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

recommend_trend.py

@@ -123,6 +123,7 @@ def compute_daily_quote_stats(bars: list) -> dict:
         "yesterday_change_pct": round(y_change_pct, 2) if y_change_pct is not None else None,
         "yesterday_amplitude_pct": round(y_amp, 2) if y_amp is not None else None,
         "volume": int(vol) if vol is not None else None,
+        "volume_unit": "lot",
     }