Complete inbox CLI implementation

internal/cli/inbox/update.go

@@ -16,6 +16,7 @@ type updateOptions struct {
 	status      string
 	summary     string
 	body        string
+	bodyFile    string
 	payloadJSON string
 }
 
@@ -36,6 +37,11 @@ func newUpdateCmd(root *rootOptions) *cobra.Command {
 				return fmt.Errorf("agent is required")
 			}
 
+			body, err := resolveBodyValue(opts.body, opts.bodyFile)
+			if err != nil {
+				return err
+			}
+
 			sqlDB, err := db.Open(ctx, root.dbPath)
 			if err != nil {
 				return err
@@ -48,7 +54,7 @@ func newUpdateCmd(root *rootOptions) *cobra.Command {
 				Agent:       agent,
 				Status:      opts.status,
 				Summary:     opts.summary,
-				Body:        opts.body,
+				Body:        body,
 				PayloadJSON: opts.payloadJSON,
 			})
 			if err != nil {
@@ -78,6 +84,7 @@ func newUpdateCmd(root *rootOptions) *cobra.Command {
 	cmd.Flags().StringVar(&opts.status, "status", "", "New status: in_progress or blocked")
 	cmd.Flags().StringVar(&opts.summary, "summary", "", "Short update summary")
 	cmd.Flags().StringVar(&opts.body, "body", "", "Update body")
+	cmd.Flags().StringVar(&opts.bodyFile, "body-file", "", "Read update body from file")
 	cmd.Flags().StringVar(&opts.payloadJSON, "payload-json", "", "Structured payload JSON string")
 
 	_ = cmd.MarkFlagRequired("thread")