chore: remove animation iteration dirs from git, keep locally

docs/animation[0-9]*/ added to .gitignore — only docs/animation/ (final) stays tracked.

Author: ualtinok

.gitignore

@@ -26,3 +26,6 @@ tmp/
 local-ignore/
 .planning/
 
+# Keep only the final animation; iteration folders stay local
+docs/animation[0-9]*/
+