migrate 392 questions to pattern format

backend/data/questions/longest-increasing-path-in-a-matrix.yaml

@@ -8,9 +8,12 @@ categories:
   - dynamic-programming
   - arrays
 patterns:
-  - dfs
-  - dynamic-programming
-  - matrix-traversal
+  - slug: dfs
+    is_optimal: true
+  - slug: dynamic-programming
+    is_optimal: false
+  - slug: matrix-traversal
+    is_optimal: false
 
 function_signature: "def longest_increasing_path(matrix: list[list[int]]) -> int:"