Add Makefile and update .gitignore for AI-related files

.gitignore
- add rules to ignore AI instruction files (e.g., `CLAUDE.md`, `.cursorrules`, `.claude`)

Makefile
- introduce setup, run, and test commands using `uv`

Author: calmmage

.gitignore

@@ -213,3 +213,11 @@ yarn-error.log*
 # typescript
 *.tsbuildinfo
 next-env.d.ts
+
+# AI instruction files (generated)
+CLAUDE.md
+GEMINI.md
+.cursorrules
+
+# AI instruction files (generated)
+.claude

Makefile

@@ -0,0 +1,10 @@
+.PHONY: setup run test
+
+setup:
+	uv sync --group extras --group test
+
+run:
+	uv run python src/main.py
+
+test:
+	uv run pytest src tests