NIM Proxy

Fixes Step 3.7 Flash (NIM Endpoint) silently returning empty responses in Continue . By putting a proxy between Continue and NIM, to fix things per request.

What is New:

1. Preserving tool_calls chunks so Continue can execute tools
2. Real-time Streaming

NIM Proxy

Fixes Step 3.7 Flash (NIM Endpoint) silently returning empty responses in Continue .

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Sits between Continue and NIM, fixing things per request:

1. Strips min_p from outgoing requests (causes silent HTTP 400)
2. Strips usage from content chunks in the streaming response (causes silent empty reply)
3. Strips reasoning/reasoning_content chunks (they had empty content)