launch: warn when server context length is below 64k for local models (#15044)

A stop-gap for now to guide users better. We'll add more in-depth recommendations per integration as well.

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Co-authored-by: Parth Sareen <parth.sareen@ollama.com>

api/types.go

@@ -841,7 +841,8 @@ type CloudStatus struct {
 
 // StatusResponse is the response from [Client.CloudStatusExperimental].
 type StatusResponse struct {
-	Cloud CloudStatus `json:"cloud"`
+	Cloud         CloudStatus `json:"cloud"`
+	ContextLength int         `json:"context_length,omitempty"`
 }
 
 // GenerateResponse is the response passed into [GenerateResponseFunc].