Baseline v1: fix multi-trade bug, working confluence factors, PF=1.12 over 15 months

- Fix BreakoutVolumeStrength: was always 0.50 due to self-referential volume comparison
- Fix VolatilityRegime: was always ~0.50 due to single-bar value area baseline
- Fix multi-trade-per-day: session reset now compares trading date not session timestamp
- Add NT8.Strategies.dll to deploy script (was missing from every deployment)
- Fix grade filter minimum from C to B (MinTradeGrade=4)
- Add MinTradeGrade as configurable NinjaScript property
- Fix confluence_score metadata: now stores full ConfluenceScore object not double
- Baseline: B-grade long-only 30min ORB on ES, Jan 2025-Mar 2026
  120 trades, 35.8% win rate, PF=1.12, Sharpe=0.18, MaxDD=

src/NT8.Strategies/Examples/SimpleORBStrategy.cs

@@ -157,19 +157,19 @@ namespace NT8.Strategies.Examples
                         ? context.Session.SessionStart
                         : context.CurrentTime.Date.AddHours(9.5);
 
-                    // Validate session start is a legitimate RTH boundary (08:00-10:30 ET).
-                    // Rejects spurious ETH-derived session boundaries that can reset _tradeTaken mid-session.
+                    // Guard: only reset when the TRADING DATE has changed, not just the session
+                    // start timestamp. Using trading date prevents mid-session resets caused by
+                    // _openingRangeStart holding a stale value from a previous day.
+                    DateTime thisTradingDate = thisSessionStart.Date;
+
                     TimeSpan sessionStartTime = thisSessionStart.TimeOfDay;
                     bool isValidRthSessionStart = sessionStartTime >= new TimeSpan(8, 0, 0)
                         && sessionStartTime <= new TimeSpan(10, 30, 0);
 
-                    if (isValidRthSessionStart)
-                    {
-                        if (thisSessionStart != _openingRangeStart || _currentSessionDate == DateTime.MinValue)
+                    if (isValidRthSessionStart && thisTradingDate != _currentSessionDate)
                     {
                         ResetSession(thisSessionStart);
                     }
-                    }
 
                     // Only trade during RTH
                     if (context.Session == null || !context.Session.IsRth)