helix-skill-400-line-hard-limit-progressive-disclosure-discipline

All Helix skills must stay ≤400 lines. Files exceeding this (e.g., website-creator at 583 lines) break progressive disclosure — the entire skill loads into context on invocation, making triggers less precise and wasting tokens. The fix pattern is to extract detailed reference material into references/ or docs/ subdirectories and replace body sections with pointers.