diff --git a/.gitignore b/.gitignore
index dcc86cc..634e253 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,8 @@ site/
 .vscode/
 .run/
 .claude/
+CLAUDE.md
+*/CLAUDE.md
 *.iml
 
 # OS
@@ -32,6 +34,9 @@ __pycache__/
 .venv/
 *.egg-info/
 
+# Excalidraw working files
+docs/excalidraw/
+
 # Logs
 *.log
 hs_err_pid*
diff --git a/frontend/package.json b/frontend/package.json
index a540d3f..580d0b3 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -16,7 +16,6 @@
     "format:check": "prettier --check src/"
   },
   "dependencies": {
-    "@vitest/mocker": "^4.1.2",
     "dompurify": "^3.3.3",
     "marked": "^17.0.4",
     "pinia": "^2.3.0",
@@ -25,6 +24,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.0.0",
+    "@vitest/mocker": "^4.1.2",
     "@types/dompurify": "^3.2.0",
     "@vitejs/plugin-vue": "^6.0.5",
     "eslint": "^9.0.0",