sx-host step 3: HTTP server mode + define shorthand + SX highlighter
HTTP server (--http PORT): OCaml serves sx-docs directly, no Python.
Loads components at startup, routes /sx/ URLs, renders full pages with
shell. Geography page: 124ms TTFB (vs 144ms Quart). Single process.
define shorthand: (define (name args) body) desugars to
(define name (fn (args) body)) in the CEK step function.
SX highlighter (lib/highlight.sx): pure SX syntax highlighting with
Tailwind spans. Tokenizes SX/Lisp code — comments, strings, keywords,
components, specials, numbers, booleans. Replaces Python highlight.py.
Platform constructors: make-lambda, make-component, make-island,
make-macro, make-thunk, make-env + accessor functions bound for
evaluator.sx compatibility in HTTP mode.
Tests: 1116/1117 OCaml, 7/7 Playwright (main tree).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
giles
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