cmd/opencode: rename provider from "Ollama (local)" to "Ollama" (#14566)

The "(local)" qualifier is unnecessary since there's only one Ollama
provider. Existing configs with the old name are migrated automatically;
custom names are left unchanged.

cmd/config/opencode.go

@@ -122,13 +122,18 @@ func (o *OpenCode) Edit(modelList []string) error {
 	if !ok {
 		ollama = map[string]any{
 			"npm":  "@ai-sdk/openai-compatible",
-			"name": "Ollama (local)",
+			"name": "Ollama",
 			"options": map[string]any{
 				"baseURL": envconfig.Host().String() + "/v1",
 			},
 		}
 	}
 
+	// Migrate legacy provider name
+	if name, _ := ollama["name"].(string); name == "Ollama (local)" {
+		ollama["name"] = "Ollama"
+	}
+
 	models, ok := ollama["models"].(map[string]any)
 	if !ok {
 		models = make(map[string]any)