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/sliding-window/0003-longest-substring-without-repeating-characters.org

@@ -1,5 +1,5 @@
-* TODO 0003. Longest Substring Without Repeating Characters :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0003. Longest Substring Without Repeating Characters :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0003. Longest Substring Without Repeating Characters][Roadmap]]
 :END:

org/study_deck_02/dsa/sliding-window/0076-minimum-window-substring.org

@@ -1,5 +1,5 @@
-* TODO 0076. Minimum Window Substring :hard:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0076. Minimum Window Substring :hard:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0076. Minimum Window Substring][Roadmap]]
 :END:

org/study_deck_02/dsa/sliding-window/0121-best-time-to-buy-and-sell-stock.org

@@ -1,5 +1,5 @@
-* TODO 0121. Best Time to Buy And Sell Stock :easy:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0121. Best Time to Buy And Sell Stock :easy:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0121. Best Time to Buy And Sell Stock][Roadmap]]
 :END:

org/study_deck_02/dsa/sliding-window/0239-sliding-window-maximum.org

@@ -1,5 +1,5 @@
-* TODO 0239. Sliding Window Maximum :hard:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0239. Sliding Window Maximum :hard:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0239. Sliding Window Maximum][Roadmap]]
 :END:

org/study_deck_02/dsa/sliding-window/0424-longest-repeating-character-replacement.org

@@ -1,5 +1,5 @@
-* TODO 0424. Longest Repeating Character Replacement :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0424. Longest Repeating Character Replacement :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0424. Longest Repeating Character Replacement][Roadmap]]
 :END:

org/study_deck_02/dsa/sliding-window/0567-permutation-in-string.org

@@ -1,5 +1,5 @@
-* TODO 0567. Permutation In String :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0567. Permutation In String :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0567. Permutation In String][Roadmap]]
 :END:

org/study_deck_02/dsa/sliding-window/3306-count-of-substrings-containing-every-vowel-and-k-consonants-ii.org

@@ -1,5 +1,5 @@
-* TODO 3306. Count of Substrings Containing Every Vowel and K Consonants II :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 3306. Count of Substrings Containing Every Vowel and K Consonants II :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*3306. Count of Substrings Containing Every Vowel and K Consonants II][Roadmap]]
 :END: