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/arrays-hashing/0001-two-sum.org

@@ -1,5 +1,5 @@
-* TODO 0001. Two Sum :easy:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0001. Two Sum :easy:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0001. Two Sum][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/0036-valid-sudoku.org

@@ -1,5 +1,5 @@
-* TODO 0036. Valid Sudoku :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0036. Valid Sudoku :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0036. Valid Sudoku][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/0049-group-anagrams.org

@@ -1,5 +1,5 @@
-* TODO 0049. Group Anagrams :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0049. Group Anagrams :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0049. Group Anagrams][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/0128-longest-consecutive-sequence.org

@@ -1,5 +1,5 @@
-* TODO 0128. Longest Consecutive Sequence :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0128. Longest Consecutive Sequence :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0128. Longest Consecutive Sequence][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/0217-contains-duplicate.org

@@ -1,5 +1,5 @@
-* TODO 0217. Contains Duplicate :easy:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0217. Contains Duplicate :easy:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0217. Contains Duplicate][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/0238-product-of-array-except-self.org

@@ -1,5 +1,5 @@
-* TODO 0238. Product of Array Except Self :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0238. Product of Array Except Self :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0238. Product of Array Except Self][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/0242-valid-anagram.org

@@ -1,5 +1,5 @@
-* TODO 0242. Valid Anagram :easy:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0242. Valid Anagram :easy:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0242. Valid Anagram][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/0271-encode-and-decode-strings.org

@@ -1,5 +1,5 @@
-* TODO 0271. Encode and Decode Strings :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0271. Encode and Decode Strings :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0271. Encode and Decode Strings][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/0347-top-k-frequent-elements.org

@@ -1,5 +1,5 @@
-* TODO 0347. Top K Frequent Elements :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 0347. Top K Frequent Elements :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*0347. Top K Frequent Elements][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/1408-string-matching-in-an-array.org

@@ -1,5 +1,5 @@
-* TODO 1408. String Matching in an Array :easy:
 #+PROPERTY: STUDY_DECK_02
+* TODO 1408. String Matching in an Array :easy:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*1408. String Matching in an Array][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/1769-minimum-number-of-operations-to-move-all-balls-to-each-box.org

@@ -1,5 +1,5 @@
-* TODO 1769. Minimum Number of Operations to Move All Balls to Each Box :medium:
 #+PROPERTY: STUDY_DECK_02
+* TODO 1769. Minimum Number of Operations to Move All Balls to Each Box :medium:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*1769. Minimum Number of Operations to Move All Balls to Each Box][Roadmap]]
 :END:

org/study_deck_02/dsa/arrays-hashing/2678-number-of-senior-citizens.org

@@ -1,5 +1,5 @@
-* TODO 2678. Number of Senior Citizens :easy:
 #+PROPERTY: STUDY_DECK_02
+* TODO 2678. Number of Senior Citizens :easy:
 :PROPERTIES:
 :NEETCODE: [[file:../../roadmap.org::*2678. Number of Senior Citizens][Roadmap]]
 :END: