diff --git a/.codex/AGENTS.md b/.codex/AGENTS.md
new file mode 100644
index 0000000..8015be6
--- /dev/null
+++ b/.codex/AGENTS.md
@@ -0,0 +1,4 @@
+## Architecture
+- Frontend: html + JavaScript
+- Backend: PHP
+- DB: MySQL with phpmyadmin
diff --git a/Web/.claude/settings.local.json b/Web/.claude/settings.local.json
deleted file mode 100644
index 8c1f328..0000000
--- a/Web/.claude/settings.local.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Bash(git add *)"
-    ]
-  }
-}