# GTR010 — Upgrade24_1 — format/ftype normalization

**Contract:** behaviour-preserving (runtime no-op).
## Claim
Lowercasing + comma-token-stripping `format`/`ftype` is a runtime no-op that
restores 24.2 validity.

## Proof — the codemod IS Galaxy's own parse, applied statically
`parse_extensions` returns
`[extension.strip().lower() for extension in self.get("format", "data").split(",")]`
(`tool_util/parser/xml.py:1453`) — character-for-character this transform. The
datatype registry lowercases extensions at load
(`datatypes/registry.py:1028-1042`). A test `ftype` missing the registry never
matched (repair class).

## Scope boundary
A `<data>` comma-list, non-datatype junk, and macro-file values are left
(codemod §14; the macro residual is the opt-in `normalize-macros` command's
job).