Member neograph::a2a::A2AClient::StreamCallback: Renamed to EventCallback to avoid colliding with neograph::StreamCallback (provider.h: void(string)). The shapes are different (return type + argument), so a TU pulling in both <neograph/provider.h> and <neograph/a2a/client.h> would shadow one with the other. Old name kept as an alias for back-compat — prefer EventCallback in new code.
Member neograph::Provider::complete (const CompletionParams &params): v1.0 collapses the 4-virtual cross-product into the single async-streaming-superset invoke(params, on_chunk). New code: co_await provider->invoke(params, nullptr) (async) or neograph::async::run_sync(provider->invoke(params, nullptr)) (sync). The legacy complete() keeps working through the deprecation window and is removed in v1.0.0. See ROADMAP_v1.md Candidate 6.
Member neograph::Provider::complete_async (const CompletionParams &params): Use invoke(params, nullptr). v1.0 removes this.
Member neograph::Provider::complete_stream (const CompletionParams &params, const StreamCallback &on_chunk): Use invoke(params, on_chunk) (or neograph::async::run_sync(invoke(params, on_chunk)) for a sync caller). v1.0 removes this.
Member neograph::Provider::complete_stream_async (const CompletionParams &params, const StreamCallback &on_chunk): Use invoke(params, on_chunk). v1.0 removes this.