- Updated n_chase to support bidirectional movement with n3 and n4 parameters
- n3 controls forward steps per direction change
- n4 controls backward steps per direction change
- Pattern alternates between moving forward n3 steps and backward n4 steps
- Each direction repeats for the specified number of steps before switching
- Added test/9.py with n1=20, n2=20, n3=20, n4=-5 parameters
- Updated to run as a thread-based pattern similar to other patterns
- Modified rainbow() to distribute colors along the physical length
- Each LED gets a different hue based on its position
- n1 parameter controls how many times the rainbow cycles (nodes)
- Split rainbow tests into test/rainbow/ directory with 9 numbered test files
- Each test runs forever until interrupted
- Added main.py to run all tests in sequence repeatedly
radiate: origins every n1, step by delay, stop when full, dark wave outward, ensure strip off at end, run once
alternating: use n1 as ON width and n2 as OFF width; phase via self.step
pulse: attack (n1), hold (delay), decay (n2); stop at end
tests: add specto sweep (n1_sequence) and radiate demo; include n index per message; use nested {name:{...}} schema; support iterations/repeat-delay
