chore: clean up root configuration files

- Remove redundant .npmrc (ignore-build-scripts=false is default)
- Remove Makefile (scripts available in package.json)
- Simplify root package.json:
  - Remove duplicate pnpm keys
  - Remove frontend-specific esbuild config (already in apps/web/package.json)
  - Remove version/description (not needed for private workspace root)
  - Remove compose scripts (use docker compose directly)
- Clean pnpm-workspace.yaml:
  - Remove placeholder allowBuilds comment
  - Remove onlyBuiltDependencies (handled per-workspace)

Makefile

@@ -1,29 +0,0 @@
-.PHONY: install lint test typecheck build dev compose-up compose-down clean
-
-install:
-	npx pnpm@11.1.1 install
-	cd apps/api && python3 -m venv .venv && .venv/bin/pip install -e ".[dev]"
-
-lint:
-	npx pnpm@11.1.1 lint
-
-test:
-	npx pnpm@11.1.1 test
-
-typecheck:
-	npx pnpm@11.1.1 typecheck
-
-build:
-	npx pnpm@11.1.1 build
-
-dev:
-	npx pnpm@11.1.1 dev
-
-compose-up:
-	docker compose up --build -d
-
-compose-down:
-	docker compose down
-
-clean:
-	rm -rf node_modules apps/web/node_modules apps/api/.venv .pnpm-store/