fix: add Python setuptools and build tools for better-sqlite3 compilation

- Add python3, py3-setuptools, make, g++ to Alpine base image
- Required for better-sqlite3 native module compilation in Docker build
- Fixes 'ModuleNotFoundError: No module named distutils' error

Dockerfile

@@ -1,6 +1,9 @@
 # Multi-stage build for Soroban Abacus Flashcards
 FROM node:18-alpine AS base
 
+# Install Python and build tools for better-sqlite3
+RUN apk add --no-cache python3 py3-setuptools make g++
+
 # Install pnpm and turbo
 RUN npm install -g pnpm@8.0.0 turbo@1.10.0