diff --git a/.gitignore b/.gitignore
index c2658d7..7451084 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,10 @@
+.venv/
+doc/tags
+*.log
+build
+io
+debug
+venv/
+CLAUDE.md
+__pycache__
 node_modules/
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..0b59b01
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,7 @@
+.pytest_cache/
+node_modules/
+.venv/
+build/
+dist/
+*.pyc
+__pycache__/
diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..039a474
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,17 @@
+{
+  "proseWrap": "always",
+  "printWidth": 80,
+  "tabWidth": 2,
+  "useTabs": false,
+  "trailingComma": "none",
+  "semi": false,
+  "singleQuote": true,
+  "overrides": [
+    {
+      "files": ["**/*.md"],
+      "options": {
+        "parser": "markdown"
+      }
+    }
+  ]
+}