Extracts request-level A2A metadata from a RequestContext.
Supports @a2a-js/sdk >= 1.0.0 (ctx.request.metadata) and @a2a-js/sdk 0.3.x via AdkDefaultRequestHandler.
ctx.request.metadata
AdkDefaultRequestHandler
Extracts request-level A2A metadata from a RequestContext.
Supports @a2a-js/sdk >= 1.0.0 (
ctx.request.metadata) and @a2a-js/sdk 0.3.x viaAdkDefaultRequestHandler.