Turn it on app-wide

// src/hooks.server.c
import { tronSerializer } from '@human-synthesis/norns-tron/server'

features := import.meta.glob './lib/norns/*/server/module.c', { eager: true }
app := await boot { features, serializer: tronSerializer() }

{ handle, handleError } := app
export { handle, handleError }

From now on every route() response is content-negotiated: clients that send Accept: application/tron get TRON, everyone else (curl, third parties, existing code) keeps getting JSON. Remove the serializer line to roll the whole thing back.

#Per-route control

export GET  := route serializer: tronSerializer({ schema: noteWire }), handler: ...
export POST := route serializer: null, handler: ...   // force plain JSON

A per-route serializer overrides the app-wide one; null forces JSON.

#Request bodies

The serializer's parseBody hook lets route() read TRON request bodies (Content-Type: application/tron) in addition to JSON and form bodies, so the same endpoint accepts all three:

export POST := route
	input: createNoteSchema
	handler: async ({ input, container }) =>
		id: await notes(container).create input

#What goes on the wire

• Content type application/tron, never application/json: a TRON body may carry a declaration preamble that is not valid JSON.
• Payloads under about 1 KB are emitted as plain JSON automatically (and still decoded transparently); below that size TRON's fixed costs do not pay off.
• The serializer's options are the EncodeOptions (minBytes, dict, table, force) plus schema for schema mode.