tsc was emitting compiled .js files directly into packages/web/src/ alongside the .tsx source files because noEmit was not set. These artifacts were never used — Vite compiles from .tsx source directly. - Add noEmit: true to packages/web/tsconfig.json (tsc = type-check only) - Delete all 62 orphaned .js files from src/ (-6,129 lines) - Add packages/web/src/**/*.js to .gitignore as safeguard