The .gitignore had 'data/' which matches any 'data' directory at
any depth. That excluded src/frontend/src/data/ from git, so the
file defaults.ts (with DEFAULT_INSUMOS, DEFAULT_FORMULAS, etc.)
was never committed. CI was failing with TS2307 because the file
was in the local working tree but not in the git checkout.
Tighten the rule to '/data/' so only the root runtime H2 database
folder is ignored, not the source data directory.