chore(dx): consolidate commands behind make + add editor config

- Make is the canonical interface; pnpm scripts wrap turbo, make wraps pnpm
- CI now calls `make ci-web` / `make ci-desktop` so local == CI
- Add .nvmrc (node 24, matches CI) + engines field
- Add .editorconfig and .vscode (extensions + settings)
- Add `pnpm bootstrap` (deps + Playwright Chromium)
- Add `dev:web` / `dev:desktop` shortcuts
- CONTRIBUTING.md: lead with `make bootstrap`/`make dev-web`,
  link Tauri prereqs, fix wrong `pnpm dev` claim
- CLAUDE.md: command table reflects make-first workflow

Makefile

@@ -1,22 +1,51 @@
-.PHONY: dev build test lint lint-fix typecheck install
+# Single source of truth for repo commands. CI calls these targets too,
+# so anything that works in `make` locally works in `make` on a runner.
+# Targets delegate to pnpm scripts, which delegate to turborepo.
 
-dev:
-	pnpm --filter @openconcho/desktop dev
+.PHONY: bootstrap dev dev-web dev-desktop \
+        build test test-e2e lint lint-fix typecheck check \
+        ci-web ci-desktop install help
 
-build:
-	pnpm turbo run build
+help:
+	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS=":.*?## "}; {printf "  \033[36m%-14s\033[0m %s\n", $$1, $$2}'
 
-test:
-	pnpm turbo run test
+bootstrap: ## Install deps + Playwright Chromium (run once after clone)
+	pnpm bootstrap
 
-lint:
-	pnpm turbo run lint
+dev: dev-desktop ## Alias for `dev-desktop`
 
-lint-fix:
-	pnpm exec biome check --write packages/web/src/
+dev-web: ## Vite dev server at http://localhost:5173
+	pnpm dev:web
 
-typecheck:
-	pnpm turbo run typecheck
+dev-desktop: ## Tauri desktop app
+	pnpm dev:desktop
 
-install:
+build: ## Turbo: build all packages
+	pnpm build
+
+test: ## Vitest (unit + integration)
+	pnpm test
+
+test-e2e: ## Playwright e2e (requires bootstrap)
+	pnpm test:e2e
+
+lint: ## Biome lint check
+	pnpm lint
+
+lint-fix: ## Biome lint + format auto-fix
+	pnpm lint:fix
+
+typecheck: ## tsc --noEmit across packages
+	pnpm typecheck
+
+check: ## lint + typecheck + test
+	pnpm check
+
+ci-web: ## CI: lint + typecheck + test + build for @openconcho/web
+	pnpm ci:web
+
+ci-desktop: ## CI: cargo-check for @openconcho/desktop
+	pnpm ci:desktop
+
+install: ## pnpm install (no playwright)
 	pnpm install