Two logical changes that landed as one file rewrite:
1. Tighten the code. SLOC 168 -> 126 (-42), total lines 201 -> 146
pre-comments. Moves: inline single-statement if/while bodies (via
stylua's `collapse_simple_statement = Always` and `column_width
= 120`), collapse K-termcode table to one line, combine api/fn/M
into one local declaration, drop verbose config comments, merge
`two` / `ivs_by_line` / `li` into one local, inline CR-branch
loop, drop the apply-indirection in setup(), and assorted smaller
trims.
2. Re-add prose where the golf made intent non-obvious. Comments now
explain: smartcase detection, the +start_line/-2 offset reconcile,
the *global* avail disqualification, the cursor-proximity sort
purpose, the slow/fast char encoding of pair labels (and why it
keeps `prefixes` minimal), the overlap-skip interval math and the
carryover-to-next-match behavior, why the augroup is recreated per
setup call, and why table-form labels own a dedicated highlight
group. No code change from the comment pass itself.
Final sizes: 126 SLOC, 194 total lines including 55 comment lines
and 13 blank lines. Still smaller than upstream (131 SLOC) and one
to two orders of magnitude smaller than every other jump plugin.
swaits
5348eaa1da