🧼 generate compact wcwidth tables

[natemoo-re]

Building on #35, reduces npm install size by ~12% (270 kB → 238 kB unpacked) via:

• replaces the src/wcwidth.c implementation borrowed from termbox2 (~1,200 lines) with optimized tables generated by tasks/gen-wcwidth.ts
• tables are generated from official Unicode spec, only tracks the size of wide characters (width = 2) and zero-width characters (width = 0) instead of all ranges (width = 0 | 1 | 2)
• shrinks clayterm.wasm from 152 kB → 128 kB; wcwidth data was a significant portion of the binary
• adds a gen-wcwidth task to regenerate tables when Unicode data updates

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/clayterm@49

commit: fbfc0eb

[codspeed-hq]

Merging this PR will degrade performance by 10.25%

❌ 1 regressed benchmark
✅ 17 untouched benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
❌	simple text	184 µs	205.1 µs	-10.25%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing ref/wcwidth (fbfc0eb) with main (4139212)}

[natemoo-re]

Performance regression appears to be due to different hardware being selected to run the benchmarks compared to main--debugged the logs locally. Merging this should be safe.