Non-streaming /api/chat support including:
- Vision via images: []base64
- Tool calls on assistant + tool-role response messages
- think field accepting string reasoning levels (or "true"/"false")
- Authorization header when apiKey is non-empty (cloud mode)
Tool-call arguments are passed as JSON objects to the wire and surfaced
as JSON-string Arguments on provider.ToolCall. Tool calls are assigned
synthetic IDs (tc_<index>) when Ollama omits one, so the round-trip
back as an assistant tool_calls + tool-role message remains correlated.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Adds wire types and a Provider struct that will replace the
openaicompat-based Ollama shim with a native /api/chat implementation.
Complete and Stream methods are stubs; subsequent commits implement them.
Adjusts the existing ollama.go to drop the type alias on
openaicompat.Provider (renaming the legacy shim to a temporary internal
helper) so the new native Provider type does not collide. Public New()
still returns the openaicompat-backed provider until Task 4 swaps it.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
steve