giles 30a23d4dae host: Part C — edit the TYPE DEFINITION (its grammar) on the type's own page ...

"It's just more composition": a type post's edit page now shows a Type-definition editor —
each field as name:type, and each Composition field with a GRAMMAR CHECKLIST (a checkbox per
card kind = permitted, + conditional/repeater toggles). Editing it changes what the type's
instances may contain. host/blog--{is-type?, set-field-grammar!, own-field, checkbox,
grammar-form, type-def-editor}; POST /<type>/grammar reads the checklist (uniquely-named
blk-<ct> / allow-<ctrl> boxes, since form fields are single-value) → set-field-grammar!.
Shown only when host/blog--is-type? (declares fields, or subtype-of type) — a type's page has
it, an instance's doesn't.

blog 184/184, full conformance 413/413 (+ Part C tests: is-type?, set-field-grammar!, the
checklist renders, POST /grammar sets it, appears on a type page not an instance's).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-01 14:03:43 +00:00

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