- describe/preview now surface each tool's return type as Result<T> (alias
defined once in the prompt); the inline preview shows it too, so the model
sees a tool's result shape without a describe round-trip. T is the declared
outputSchema else unknown, with prose telling the model to inspect an unknown
result before assuming fields.
- renderType pretty mode emits JSDoc tags a TS type can't express: @default,
@format, @deprecated, @minItems/@maxItems (multi-line descriptions preserved).
- Attachments are now opaque handles: a tool's media becomes
{ type:'file', id, mime, filename?, bytes } with no inline bytes. Real bytes
stay host-side in a per-execution attachmentTable; the program propagates or
drops a handle (return it to surface the image to the model+user) but cannot
read or leak the base64. Documents the divergence from prior art in rune.md.
- Records the throw/catch (not errors-as-values) decision in rune.md.
Aiden Cline
c16bba8bc0