types.clj was 852 lines mixing the pure structural-type algebra with the
inference engine, checker, and driver. Move the lattice — scalar/struct/vec/set/
union types, join-t, depth-cap, shape, and the numeric/vector return-fn sets —
into jolt.passes.types.lattice (no inference state, no requires). types.clj
requires it; the engine is now ~720 lines. Compiled into the image before
jolt.passes.types. Re-minted seed differs only by gensym label renumbering.