v0.2.37

zig: build on Zig 0.17 (#15)

* zig: build on Zig 0.17

The mechanical pass only (fizzy's scripts/zig-0.17/rewrite.sh: zig fmt's upgrades and the one-answer std renames), and CI on Zig 0.17.0.

Part of fizzyedit/plans#5. The fizzy pin moves to the 0.17 SDK at its release; until then this builds against fizzy's zig/0.17 sdk/ by path.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* sdk: repin to fizzy SDK 0.2.30

The first SDK on Zig 0.17.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>