fix(ollama): set gemma4:31b output limit to match context

Ollama does not impose official output limits. The existing convention for Gemma models on Ollama (gemma3:4b, gemma3:12b, gemma3:27b) is to set output equal to context. gemma4:31b was the only exception with output=8192 vs context=262144.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

Author: fernandoenzo

providers/ollama-cloud/models/gemma4:31b.toml

@@ -10,7 +10,7 @@ open_weights = true
 
 [limit]
 context = 262144
-output = 8192
+output = 262144
 
 [modalities]
 input = ["text","image"]