Add Makefile for common dev tasks

Targets: install/dev/saip (deps), test, cov, run, init-db, profile, clean.
Interpreter overridable via PY (e.g. make test PY=./venv/bin/python).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Makefile

@@ -0,0 +1,46 @@
+# Convenience targets. Override the interpreter with e.g. `make test PY=./venv/bin/python`.
+PY ?= python
+
+.PHONY: help install dev saip test cov run init-db profile clean
+
+help:
+	@echo "Targets:"
+	@echo "  install   Install runtime dependencies"
+	@echo "  dev       Install runtime + dev (test) dependencies"
+	@echo "  saip      Install optional SAIP profile-generation dependencies"
+	@echo "  test      Run the test suite"
+	@echo "  cov       Run tests with coverage report"
+	@echo "  run       Start the provisioning server (CONFIG_PATH to override config)"
+	@echo "  init-db   Initialise the SQLite database"
+	@echo "  profile   Generate a sample profile (FORMAT=v2|saip, OUT=file)"
+	@echo "  clean     Remove caches and __pycache__"
+
+install:
+	$(PY) -m pip install -r requirements.txt
+
+dev:
+	$(PY) -m pip install -r requirements.txt -r requirements-dev.txt
+
+saip:
+	$(PY) -m pip install -r requirements-saip.txt
+
+test:
+	$(PY) -m pytest tests/ -q
+
+cov:
+	$(PY) -m pytest tests/ -q --cov=server --cov-report=term-missing
+
+run:
+	$(PY) -m server.app
+
+init-db:
+	$(PY) scripts/init_db.py
+
+FORMAT ?= v2
+OUT ?= profile.out
+profile:
+	$(PY) scripts/make_profile.py --format $(FORMAT) --out $(OUT)
+
+clean:
+	find . -type d -name __pycache__ -not -path './venv/*' -exec rm -rf {} + 2>/dev/null || true
+	rm -rf .pytest_cache