Add opt-in PromptKit namespaces

integrations/ckprompt/namespaces.go

@@ -0,0 +1,69 @@
+package ckprompt
+
+import (
+	commandkit "go.maximumdirect.net/commandkit"
+	promptkit "go.maximumdirect.net/promptkit"
+)
+
+// WithNamespaces enables standard resource namespace selection with explicit
+// defaults. Supplied CLI namespace flags replace only the corresponding default.
+// Loaders used with this option should leave namespace selection to the adapter.
+func WithNamespaces[I, S any](suite Suite[I, S], defaults promptkit.Namespaces) Suite[I, S] {
+	suite.namespaces = &defaults
+	return suite
+}
+
+type namespaceInput struct {
+	prompt, profile, backend commandkit.Supplied[string]
+}
+
+func namespaceFlags[I any](destination func(*I) *namespaceInput, kinds ...string) []commandkit.Flag[I] {
+	flags := make([]commandkit.Flag[I], 0, len(kinds))
+	for _, kind := range kinds {
+		var meta commandkit.FlagMeta
+		var field func(*namespaceInput) *commandkit.Supplied[string]
+		switch kind {
+		case "prompt":
+			meta = namespaceFlagDefinitions.prompt.meta
+			field = func(input *namespaceInput) *commandkit.Supplied[string] { return &input.prompt }
+		case "profile":
+			meta = namespaceFlagDefinitions.profile.meta
+			field = func(input *namespaceInput) *commandkit.Supplied[string] { return &input.profile }
+		case "backend":
+			meta = namespaceFlagDefinitions.backend.meta
+			field = func(input *namespaceInput) *commandkit.Supplied[string] { return &input.backend }
+		}
+		flags = append(flags, commandkit.ValueFlag(meta, (*string)(nil), parseDefinitionString, func(input *I, value commandkit.Supplied[string]) { *field(destination(input)) = value }))
+	}
+	return flags
+}
+
+var namespaceFlagDefinitions = struct{ prompt, profile, backend requestFlagDefinition }{
+	prompt:  requestFlagDefinition{commandkit.FlagMeta{Name: "llm-prompt-namespace", Usage: "Prompt resource namespace."}, []string{"prompt-namespace"}},
+	profile: requestFlagDefinition{commandkit.FlagMeta{Name: "llm-profile-namespace", Usage: "Profile resource namespace."}, []string{"profile-namespace"}},
+	backend: requestFlagDefinition{commandkit.FlagMeta{Name: "llm-backend-namespace", Usage: "Backend resource namespace."}, []string{"backend-namespace"}},
+}
+
+func selectedNamespaces(defaults *promptkit.Namespaces, selected namespaceInput) *promptkit.Namespaces {
+	if defaults == nil {
+		return nil
+	}
+	value := *defaults
+	if selected.prompt.Set {
+		value.Prompt = selected.prompt.Value
+	}
+	if selected.profile.Set {
+		value.Profile = selected.profile.Value
+	}
+	if selected.backend.Set {
+		value.Backend = selected.backend.Value
+	}
+	return &value
+}
+
+func namespacedEngine(engine *promptkit.Engine, namespaces *promptkit.Namespaces) (*promptkit.Engine, error) {
+	if namespaces == nil {
+		return engine, nil
+	}
+	return engine.WithNamespaces(*namespaces)
+}