Add Makefile for developer workflow

Makefile

@@ -0,0 +1,55 @@
+# ROBOCO CLI — Developer Workflow
+# TypeScript · Node.js ≥ 24 · npm
+
+.PHONY: all check format check-format lint fix test test-unit test-integration test-e2e test-all typecheck build clean coverage
+
+# ─── Full local workflow ───────────────────────────────────────────────
+# Mutating targets run sequentially (format → fix), then parallel-safe targets.
+all: fix test build
+
+# ─── CI-friendly checks (no mutation) ──────────────────────────────────
+check: check-format lint typecheck test build
+
+# ─── Format / Lint ─────────────────────────────────────────────────────
+format:
+	@npm run format
+
+check-format:
+	@npm run format:check
+
+lint:
+	@npm run lint
+
+fix: format
+	@npm run lint:fix
+
+# ─── Type checking ─────────────────────────────────────────────────────
+typecheck:
+	@npm run typecheck
+
+# ─── Tests ─────────────────────────────────────────────────────────────
+test:
+	@npm run test
+
+test-unit:
+	@npm run test:unit
+
+test-integration:
+	@npm run test:integration
+
+test-e2e:
+	@npm run test:e2e
+
+test-all:
+	@npm run test:all
+
+# ─── Build ─────────────────────────────────────────────────────────────
+build:
+	@npm run build
+
+# ─── Utilities ─────────────────────────────────────────────────────────
+clean:
+	@rm -rf dist coverage
+
+coverage:
+	@npx vitest run --coverage