build-request-body's POST-form branch now serialises the form fields to a text/sx
body via the serialize primitive (content-type text/sx), instead of FormData ->
URLSearchParams -> urlencoded. A hydrated page posts SX; the host reads it via
host/sx-body / host/field (the server already accepts both — urlencoded stays the
no-engine / login-bootstrap fallback). Recompiled the web stack -> .sxbc.
Verified client-agnostically (no DOM, the user's preference): a new sxtp suite test
proves the wire contract serialize(engine) <-> host/sx-body(server) round-trips a
field dict losslessly, INCLUDING sx_content full of quotes/parens that would break a
naive encoder, plus host/field's content-type discrimination + urlencoded fallback
(sxtp 43/43). The DOM field-read (dom-query-all + .value) is the one irreducibly-
browser bit — left to a targeted Playwright smoke.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
lib/host/sxtp.sx implements the host<->subsystem wire format per
applications/sxtp/spec.sx:
- message algebra (request/response/condition/event + status helpers
ok/created/not-found/forbidden/invalid/fail) as string-keyed dicts;
verb/status/type stored as symbols (ride the wire bare)
- codec: sxtp/serialize (dict -> text/sx list form, deterministic top-level
field order, nested messages emitted in their own list form, no :msg leak)
and sxtp/parse (text/sx -> dict via a deep keyword-token->string normaliser)
- Dream bridge: sxtp/from-dream (HTTP req -> SXTP req, method->verb,
query->params) and sxtp/to-dream (SXTP resp -> HTTP resp, status->code,
body serialised to text/sx)
- 39-test suite covering algebra, serialise/parse round-trip, mappings, bridge
Runtime notes: serialize renders string-keyed dicts as {:k v} and symbols
bare; parsed keyword tokens are a distinct type (not = to string literals) so
parse normalises; unquote-splicing is unreliable so the emitter is str-based.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
