fix: move #+PROPERTY: STUDY_DECK_02 to top of file

Org-mode requires global file properties before the first headline.
Moved PROPERTY line above the * TODO heading in all 199 note files
and updated scaffold-notes.mjs template.

org/study_deck_02/dsa/1-d-dynamic-programming/0091-decode-ways.org

@@ -1,5 +1,5 @@
-* TODO 0091. Decode Ways :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0091. Decode Ways :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0091. Decode Ways][Roadmap]]
 :END: