diff --git a/.gitignore b/.gitignore
index b8696cf..8c9ef49 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,8 +22,8 @@ Thumbs.db
 *.temp
 *.log
 
-# Claude Code local settings
-**/.claude/settings.local.json
+# Claude Code
+.claude/
 
 # Core dumps and debugging
 core
@@ -43,3 +43,16 @@ vgcore.*
 # Personal files
 notes.txt
 todo.txt
+
+# User runtime/config files (created by shell at runtime)
+.lsh_aliases
+.lsh_bookmarks
+.lsh_favorite_cities
+.lsh_theme
+.lsh_history
+.lsh_frequency
+.lsh/
+
+# Documentation and test files
+docs/
+tests/
diff --git a/docs/contents.md b/docs/contents.md
deleted file mode 100644
index a875bcf..0000000
--- a/docs/contents.md
+++ /dev/null
@@ -1 +0,0 @@
-#contents
diff --git a/docs/rg_selection.txt b/docs/rg_selection.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/docs/shell.bat b/docs/shell.bat
deleted file mode 100644
index 38a94d1..0000000
--- a/docs/shell.bat
+++ /dev/null
@@ -1,2 +0,0 @@
-@echo off
-"%~dp0shell.exe" %*
diff --git a/shell b/shell
deleted file mode 100755
index d7dec27..0000000
Binary files a/shell and /dev/null differ
diff --git a/tests/another_test.txt b/tests/another_test.txt
deleted file mode 100644
index 7410249..0000000
--- a/tests/another_test.txt
+++ /dev/null
@@ -1 +0,0 @@
-This is another test file for the diff viewer
diff --git a/tests/test.txt b/tests/test.txt
deleted file mode 100644
index 18c169c..0000000
--- a/tests/test.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-hello world
-This is a test file for the grep command
-It contains multiple lines
-Boyer-Moore algorithm
-testing the grep
-This is a test change
-Modified test.txt content
-test change
diff --git a/tests/test_file_for_diff.txt b/tests/test_file_for_diff.txt
deleted file mode 100644
index bdb3efc..0000000
--- a/tests/test_file_for_diff.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-// New test file
-#include <stdio.h>
-int main() {
-    printf("Hello world\n");
-    return 0;
-}