Update README.urll

Author: seanpm2001

OldVersions/SNU_2D_ProgrammingTools_REPOLIST/README.urll

@@ -2,7 +2,7 @@
 //// SNU_2D_ProgrammingTools_REPOLIST.urll
 //// https://github.com/seanpm2001/URLL-Specification
 //// A list of all SNU Programming Tools repositories by @seanpm2001
-//// As of 2025, Monday, October 13th
+//// As of 2025, Tuesday, October 14th
 
 //// ----------------------------------------------------- \\\\
 
@@ -42,7 +42,7 @@ https://github.com/seanpm2001/Template_SNU_2D_ProgrammingTools_V7
 
 //// ----------------------------------------------------- \\\\
 
-//// IDE repositories (1,041)
+//// IDE repositories (1,042)
 
 //// Note: some duplicates are present. Community: Find duplicates, and get rewards (stars, follows, code review, etc.)
 
@@ -1087,10 +1087,11 @@ https://github.com/seanpm2001/SNU_2D_ProgrammingTools_IDE_CookLang
 https://github.com/seanpm2001/SNU_2D_ProgrammingTools_IDE_Genero-4GL
 https://github.com/seanpm2001/SNU_2D_ProgrammingTools_IDE_Koka
 https://github.com/seanpm2001/SNU_2D_ProgrammingTools_IDE_KoLMafia-ASH
+https://github.com/seanpm2001/SNU_2D_ProgrammingTools_IDE_Lean-4
 
-//// Repo count: 1057
+//// Repo count: 1058
 
-//// 2+9+1+4+1041=1057
+//// 2+9+1+4+1042=1058
 
 //// ----------------------------------------------------- \\\\
 
@@ -1105,16 +1106,16 @@ https://github.com/seanpm2001/Seanpm2001-Learn
 
 //// ----------------------------------------------------- \\\\
 
-//// Total repo count: 1063 (not including Learn repositories out of the 6 scope, as this would raise the count above 1,000, and wouldn't be necessary)
+//// Total repo count: 1064 (not including Learn repositories out of the 6 scope, as this would raise the count above 1,000, and wouldn't be necessary)
 
-//// 1057+6=1063
+//// 1058+6=1064
 
 //// ----------------------------------------------------- \\\\
 
 //// File info
 //// File type: URLL v3 list file (*.urll)
-//// File version: 257 (2025, Monday, October 13th at 08:06 pm PST)
-//// Line count (including blank lines and compiler line): 1,122
+//// File version: 258 (2025, Tuesday, October 14th at 06:17 pm PST)
+//// Line count (including blank lines and compiler line): 1,123
 
 //// ----------------------------------------------------- \\\\