feat: unify installation model catalog

tools/tht/internal/setup/files.go

@@ -14,6 +14,7 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/aritmolab/thothii/tools/tht/internal/config"
 	"github.com/aritmolab/thothii/tools/tht/internal/safeio"
 	"gopkg.in/yaml.v3"
 )
@@ -46,6 +47,7 @@ type answers struct {
 }
 
 type generatedDescriptor struct {
+	SchemaVersion    int    `yaml:"schemaVersion"`
 	Profile          string `yaml:"profile"`
 	ProjectDirectory string `yaml:"projectDirectory"`
 	EnvFile          string `yaml:"envFile"`
@@ -62,7 +64,8 @@ type generatedDescriptor struct {
 			GID       uint32 `yaml:"gid"`
 		} `yaml:"runtimeProjection,omitempty"`
 	} `yaml:"authentication"`
-	Overrides []string `yaml:"overrides"`
+	ModelCatalog config.ModelCatalog `yaml:"modelCatalog"`
+	Overrides    []string            `yaml:"overrides"`
 }
 
 // EnsureFiles writes a descriptor and non-secret environment file below deploy/<installation-id>.
@@ -318,7 +321,7 @@ func installationDirectory(root, id string) (string, error) {
 }
 
 func render(root, descriptorPath string, value answers) ([]byte, []byte, error) {
-	descriptor := generatedDescriptor{Profile: value.profile, ProjectDirectory: root, EnvFile: filepath.Join(filepath.Dir(descriptorPath), environmentName)}
+	descriptor := generatedDescriptor{SchemaVersion: 2, Profile: value.profile, ProjectDirectory: root, EnvFile: filepath.Join(filepath.Dir(descriptorPath), environmentName), ModelCatalog: defaultModelCatalog()}
 	descriptor.Workspace.Remote, descriptor.Workspace.Branch, descriptor.Workspace.Access = value.workspaceRemote, value.workspaceBranch, value.workspaceAccess
 	descriptor.Authentication.ConfigDirectory = filepath.Join(filepath.Dir(descriptorPath), "auth")
 	if value.profile == "server" {
@@ -372,6 +375,22 @@ func render(root, descriptorPath string, value answers) ([]byte, []byte, error)
 	return descriptorBytes, []byte(strings.Join(lines, "\n") + "\n"), nil
 }
 
+func defaultModelCatalog() config.ModelCatalog {
+	return config.ModelCatalog{
+		Defaults:  config.ModelCatalogDefaults{Session: "deepseek/deepseek-v4-pro"},
+		Embedding: config.ModelCatalogEmbedding{ID: "ollama/qwen3-embedding:0.6b", Dimensions: 1024},
+		Providers: map[string]config.ModelProvider{
+			"deepseek": {
+				Authentication: config.ModelAuthentication{Mode: "pi_auth"},
+				Session:        &config.ModelSessionAdapter{Mode: "pi_builtin"},
+				Models: map[string]config.CatalogModel{
+					"deepseek-v4-pro": {Session: &config.SessionModel{}},
+				},
+			},
+		},
+	}
+}
+
 func dotenvValue(value string) string { return strconv.Quote(value) }
 
 func requireCompatibleOrAbsent(path string, expected []byte) error {