feat(commands): add Deps struct and secondToken helper, remove dead contains()

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pkg/commands/deps.go

@@ -0,0 +1,14 @@
+package commands
+
+import "github.com/sipeed/picoclaw/pkg/config"
+
+// Deps provides runtime data to command handlers without importing
+// agent or channel packages. Function fields are called at handler
+// invocation time, not at construction time, so late-bound values
+// (e.g. channelManager set after NewAgentLoop) are visible.
+type Deps struct {
+	Config             *config.Config
+	GetModelInfo       func() (name, provider string)
+	ListAgentIDs       func() []string
+	GetEnabledChannels func() []string
+}

pkg/commands/dispatcher.go

@@ -57,15 +57,14 @@ func trimCommandPrefix(token string) (string, bool) {
 	return "", false
 }
 
+func secondToken(input string) string {
+	parts := strings.Fields(strings.TrimSpace(input))
+	if len(parts) < 2 {
+		return ""
+	}
+	return parts[1]
+}
+
 func normalizeCommandName(name string) string {
 	return strings.ToLower(strings.TrimSpace(name))
 }
-
-func contains(items []string, target string) bool {
-	for _, item := range items {
-		if item == target {
-			return true
-		}
-	}
-	return false
-}