## Summary
Changing the lexer's keyword set now takes one edit to the Rust list.
The compiler finds a collision-free multiplier and builds the 64-slot
table, so we can remove the Python generator and its lockfile.
A two-byte keyword like `if` packs to `0x6669_0000_0000_0000`. Only the
low two bytes of the multiplier affect its slot. We place keywords from
shortest to longest, choosing each new byte of the multiplier without
disturbing the shorter keywords. The lexer still selects a slot with one
multiply and shift, then compares the full word.
Charlie Marsh
5e90790d11