bump version to v0.2.9

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

Author: robotizeit

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "stacker"
-version = "0.2.8"
+version = "0.2.9"
 edition = "2021"
 default-run= "server"