chore(*): adopt project templates

backend/Makefile

@@ -0,0 +1,47 @@
+COMPOSE := cd .. && docker compose
+IMAGE := beavergram/backend
+IMAGE_INPUTS := pyproject.toml uv.lock Dockerfile
+CODE := src scripts ../frontend
+SERVICES := api userbot
+changed = ! git diff --quiet $(1) -- $(2) 2>/dev/null
+stamp = { git update-ref $(1) HEAD 2>/dev/null || true; }
+
+.PHONY: fmt check build pre-deploy post-deploy migrate revision session
+
+fmt:
+	uv run ruff format
+	uv run ruff check --fix
+
+check:
+	uv run ruff format --check
+	uv run ruff check
+	uv run ty check
+
+build:
+	$(COMPOSE) build api
+
+pre-deploy:
+	@if $(call changed,refs/deploy/backend,$(IMAGE_INPUTS)) || ! docker image inspect $(IMAGE) >/dev/null 2>&1; then \
+		$(MAKE) build && $(call stamp,refs/deploy/backend) && $(call stamp,refs/deploy/backend-code); \
+	fi
+	@$(COMPOSE) config --services | grep -qx postgres && $(COMPOSE) up -d postgres || true
+	$(MAKE) migrate
+
+post-deploy:
+	@if $(call changed,refs/deploy/backend-code,$(CODE)); then \
+		running=$$($(COMPOSE) ps --services --status running | grep -x $(addprefix -e ,$(SERVICES))); \
+		[ -z "$$running" ] || $(COMPOSE) restart $$running; \
+		$(call stamp,refs/deploy/backend-code); \
+	fi
+
+migrate:
+	$(COMPOSE) run --rm migrator $(or $(filter-out $@,$(MAKECMDGOALS)),upgrade head)
+
+revision:
+	$(COMPOSE) run --rm migrator revision --autogenerate -m "$(m)"
+
+%:
+	@:
+
+session:
+	uv run python scripts/session/create.py