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)

cmd/config/opencode_test.go

@@ -232,6 +232,44 @@ func TestOpenCodeEdit(t *testing.T) {
 		}
 	})
 
+	t.Run("migrate Ollama (local) provider name", func(t *testing.T) {
+		cleanup()
+		os.MkdirAll(configDir, 0o755)
+		os.WriteFile(configPath, []byte(`{"provider":{"ollama":{"name":"Ollama (local)","npm":"@ai-sdk/openai-compatible","options":{"baseURL":"http://localhost:11434/v1"}}}}`), 0o644)
+
+		if err := o.Edit([]string{"llama3.2"}); err != nil {
+			t.Fatal(err)
+		}
+
+		data, _ := os.ReadFile(configPath)
+		var cfg map[string]any
+		json.Unmarshal(data, &cfg)
+		provider := cfg["provider"].(map[string]any)
+		ollama := provider["ollama"].(map[string]any)
+		if ollama["name"] != "Ollama" {
+			t.Errorf("provider name not migrated: got %q, want %q", ollama["name"], "Ollama")
+		}
+	})
+
+	t.Run("preserve custom provider name", func(t *testing.T) {
+		cleanup()
+		os.MkdirAll(configDir, 0o755)
+		os.WriteFile(configPath, []byte(`{"provider":{"ollama":{"name":"My Custom Ollama","npm":"@ai-sdk/openai-compatible","options":{"baseURL":"http://localhost:11434/v1"}}}}`), 0o644)
+
+		if err := o.Edit([]string{"llama3.2"}); err != nil {
+			t.Fatal(err)
+		}
+
+		data, _ := os.ReadFile(configPath)
+		var cfg map[string]any
+		json.Unmarshal(data, &cfg)
+		provider := cfg["provider"].(map[string]any)
+		ollama := provider["ollama"].(map[string]any)
+		if ollama["name"] != "My Custom Ollama" {
+			t.Errorf("custom provider name was changed: got %q, want %q", ollama["name"], "My Custom Ollama")
+		}
+	})
+
 	t.Run("remove model preserves non-ollama models", func(t *testing.T) {
 		cleanup()
 		os.MkdirAll(configDir, 0o755)