feat(custom-provider): add streaming support for providers requiring it (e.g., Fireworks AI)#995
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…=true Add stream field to ProviderSpec and enable it for the custom provider. CustomProvider now aggregates streamed ChatCompletionChunks, supporting content, tool calls, reasoning content, and usage tracking. LiteLLMProvider also checks the stream flag and uses litellm.stream_chunk_builder to reassemble streamed responses. This fixes providers like Fireworks AI that reject non-streamed requests when max_tokens > 4096.
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Summary
streamfield toProviderSpecand enable it for the custom providerCustomProvidernow aggregates streamedChatCompletionChunks, supporting content, tool calls, reasoning content, and usage trackingLiteLLMProvideralso checks thestreamflag and useslitellm.stream_chunk_builderto reassemble streamed responsesmax_tokens > 4096