diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c5a965d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,19 @@
+# Local tooling and browser artifacts
+/.mimocode/
+.playwright-cli/
+
+# Dependencies and generated files, including leftovers when switching branches
+node_modules/
+.vite/
+/web/dist/
+*.tsbuildinfo
+/bin/
+output/
+
+# Local runtime data and credentials
+/data/
+.env
+.env.*
+!.env.example
+*.sqlite*
+*.log