Fix extra-payload destructuring in Ollama provider

extra-payload was destructured from the callbacks map (arg 2) but
`prompt!` passes it in the opts map (arg 1). This meant extraPayload
from model config was silently ignored for Ollama requests.

All other providers (openai, anthropic, google, github-copilot)
receive extra-payload in the opts map, consistent with how `prompt!`
passes it. This fix aligns the Ollama provider with the same pattern.

Author: ricardosllm

src/eca/llm_providers/ollama.clj

@@ -118,9 +118,9 @@
              }))
         messages))
 
-(defn chat! [{:keys [model user-messages reason? instructions api-url past-messages tools extra-headers]}
+(defn chat! [{:keys [model user-messages reason? instructions api-url past-messages tools extra-headers extra-payload]}
              {:keys [on-message-received on-error on-prepare-tool-call on-tools-called
-                     on-reason extra-payload] :as callbacks}]
+                     on-reason] :as callbacks}]
   (let [messages (concat
                   (normalize-messages (concat [{:role "system" :content instructions}] past-messages))
                   (normalize-messages user-messages))