- fix(demo-lfo-effects): Fix math.sin() usage (was angle.__sin__())
- feat(pipeline): Add set_effect_intensity() method for runtime effect control
- Allows changing effect intensity during pipeline execution
- Returns False if effect not found or intensity out of range
- Used by LFO modulation demo
The demo-lfo-effects.py script now works correctly with proper
math.sin() usage and the new set_effect_intensity() method provides
a clean API for runtime effect intensity control.