Feat: refactoring by breaking words in multiple files

CHANGELOG.md

@@ -9,6 +9,7 @@ All notable changes to this project will be documented in this file.
 
 
 ### Changed
+- Split `words.rs` (3,078 lines) into a `words/` directory module with category-based files: `core.rs`, `sound.rs`, `effects.rs`, `sequencing.rs`, `music.rs`, `midi.rs`, plus `compile.rs` and `mod.rs`.
 - Renamed `tri` Forth word to `triangle`.
 - Sequencer rewritten with prospective lookahead scheduling. Instead of sleeping until a substep, waking late, and detecting past events, the sequencer now pre-computes all events within a ~20ms forward window. Events arrive at doux with positive time deltas, scheduled before they need to fire. Sleep+spin-wait replaced by `recv_timeout(3ms)` on the command channel. Timing no longer depends on OS sleep precision.
 - `audio_sample_pos` updated at buffer start instead of end, so `engine_time` reflects current playback position.
@@ -28,6 +29,7 @@ All notable changes to this project will be documented in this file.
 - Changing pattern properties is now a stage/commit operation.
 - Changing pattern speed only happens at pattern boundaries.
 - `mlockall` warning no longer appears on macOS; memory locking is now Linux-only.
+- `clear` now resets `at` deltas, so subsequent emits default to a single emit at position 0.
 
 ## [0.0.5] - Unreleased