slash commands (#2157)

Co-authored-by: adamdotdevin <2363879+adamdottv@users.noreply.github.com>

packages/tui/internal/commands/command.go

@@ -31,6 +31,7 @@ type Command struct {
 	Description string
 	Keybindings []Keybinding
 	Trigger     []string
+	Custom      bool
 }
 
 func (c Command) Keys() []string {
@@ -96,6 +97,7 @@ func (r CommandRegistry) Sorted() []Command {
 	})
 	return commands
 }
+
 func (r CommandRegistry) Matches(msg tea.KeyPressMsg, leader bool) []Command {
 	var matched []Command
 	for _, command := range r.Sorted() {
@@ -182,7 +184,7 @@ func parseBindings(bindings ...string) []Keybinding {
 	return parsedBindings
 }
 
-func LoadFromConfig(config *opencode.Config) CommandRegistry {
+func LoadFromConfig(config *opencode.Config, customCommands []opencode.Command) CommandRegistry {
 	defaults := []Command{
 		{
 			Name:        AppHelpCommand,
@@ -400,6 +402,16 @@ func LoadFromConfig(config *opencode.Config) CommandRegistry {
 		}
 		registry[command.Name] = command
 	}
+	for _, command := range customCommands {
+		registry[CommandName(command.Name)] = Command{
+			Name:        CommandName(command.Name),
+			Description: command.Description,
+			Trigger:     []string{command.Name},
+			Keybindings: []Keybinding{},
+			Custom:      true,
+		}
+	}
+
 	slog.Info("Loaded commands", "commands", registry)
 	return registry
 }