Add --lineWrap option to action-io-generator

[snecklifter]

Summary

• Add --lineWrap / -l CLI option that word-wraps long description lines in generated JSDoc comments to a specified column width
• Without the flag, output is unchanged (no wrapping)
• Handles multiline descriptions, folded YAML strings, and single-line descriptions correctly

Example

npx action-io-generator -a action.yml -o src/generated/inputs-outputs.ts --lineWrap 100

Wraps description lines at 100 characters, accounting for the * JSDoc prefix.

Closes #61

Test plan

• Lint passes
• Compile passes
• Bundle builds
• CLI test passes (without --lineWrap, existing behavior unchanged)
• Long descriptions wrap correctly at the specified width
• Multiline YAML descriptions maintain proper * prefix on all lines
• CI passes

🤖 Generated with Claude Code