feat: Implement HTS (Higher Timeframe Trend System) strategy

- Add HTS strategy engine with crossover and alignment-based entries
- Implement Auto HTS feature (computes on TF/4 from 1m data)
- Add 1H Red Zone filter to validate long signals
- Add channel-based stop loss with RTL functionality
- Enhanced visualization with 30% opacity channel lines
- Fixed data alignment in simulation (uses htsData instead of mismatched indices)
- Fixed syntax errors in hts-engine.js (malformed template literals)
- Fixed duplicate code in simulation.js
- Added showSimulationMarkers to window object for global access
- Enhanced logging for trade signals and simulation results
- Fix missing prevFastHigh/currFastHigh in hts-visualizer.js
- Disable trend zone overlays to prevent chart clutter
- Implement client-side visualization for trade markers using line series
- MA strategy indicator configuration fixed (was empty during engine run)
- Made entry conditions more permissive for shorter timeframes
- Added comprehensive error handling and console logging

HTS_STRATEGY.md

@@ -0,0 +1,79 @@
+# HTS (Higher Timeframe Trend System) Strategy
+
+A trend-following strategy based on channel breakouts using fast and slow moving averages of High/Low prices.
+
+## Strategy Rules
+
+### 1. Core Trend Signal
+- **Bullish Trend**: Price trading above the Red (Slow) Channel and Aqua (Fast) Channel is above Red Channel
+- **Bearish Trend**: Price trading below the Red (Slow) Channel and Aqua (Fast) Channel is below Red Channel
+
+### 2. Entry Rules
+- **Long Entry**: Wait for price to break above Slow Red Channel. Candle close above shorth (Fast Low line) while fast lines are above slow lines.
+- **Short Entry**: Wait for price to break below Slow Red Channel. Look for close below shortl (Fast Low line) while fast lines are below slow lines.
+
+### 3. 1H Red Zone Filter
+- Only take Longs if the price is above the 1H Red Zone (Slow Channel), regardless of fast line direction
+- Can be disabled in configuration
+
+### 4. Stop Loss & Trailing Stop
+- **Stop Loss**: Place on opposite side of Red (Slow) Channel
+  - Long stop: longl (Slow Low) line
+  - Short stop: slowh (Slow High) line
+- **Trailing Stop**: As Red Channel moves, move stop loss accordingly
+
+### 5. RMA Default
+- Uses RMA (Running Moving Average) by default - slower and smoother than EMA
+- Designed for long-term trends, late to react to sudden crashes (feature, not bug)
+
+## Configuration Parameters
+
+| Parameter | Default | Range | Description |
+|-----------|---------|-------|-------------|
+| `shortPeriod` | 33 | 5-200 | Fast period for HTS |
+| `longPeriod` | 144 | 10-500 | Slow period for HTS |
+| `maType` | RMA | - | Moving average type (RMA/SMA/EMA/WMA/VWMA) |
+| `useAutoHTS` | false | - | Compute HTS on timeframe/4 from 1m data |
+| `use1HFilter` | true | - | Enable 1H Red Zone filter |
+
+## Usage
+
+1. Select "HTS Trend Strategy" from the strategies dropdown
+2. Configure parameters:
+   - Periods: typically 33/144 for 15min-1hour charts
+   - Enable Auto HTS for multi-timeframe analysis
+   - Enable/disable 1H filter as needed
+3. Run simulation to see backtesting results
+4. View entry/exit markers on the chart
+
+## Visualization
+
+- **Cyan Lines**: Fast channels (33-period)
+- **Red Lines**: Slow channels (144-period)
+- **Green Arrows**: Buy signals (fast low crossover)
+- **Red Arrows**: Sell signals (fast high crossover)
+- **Background Shading**: Trend zones (green=bullish, red=bearish)
+
+## Signal Strength
+
+Pure HTS signals don't mix with other indicators. Signals are based solely on:
+- Crossover detection
+- Channel alignment
+- Price position relative to channels
+- Higher timeframe confirmation (1H filter if enabled)
+
+## Example Setup
+
+For a 15-minute chart:
+- Fast Period: 33
+- Slow Period: 144
+- MA Type: RMA (default)
+- Auto HTS: Disabled (or enable to see HTS on ~4-minute perspective)
+- 1H Filter: Enabled (for better trade filtering)
+
+## Notes
+
+- This strategy is designed for trend-following, not ranging markets
+- RMA is slower than EMA, giving smoother signals but later entries
+- 1H filter significantly reduces false signals for long trades
+- Works best in volatile but trending assets like BTC