chore: bun as primary JS runtime (Makefile, docs); e2e+coverage verified under bun

Makefile

@@ -9,7 +9,7 @@ help:
 	@echo "verify        vet + staticcheck + tests + web build"
 	@echo "worker-image  build lvmh-worker:latest (requires plugin/)"
 	@echo "deploy        rsync to alarm:$(REMOTE_DIR) and docker compose up -d"
-	@echo "integration   cross-component e2e harness (e2e/, requires go + node >= 22)"
+	@echo "integration   cross-component e2e harness (e2e/, requires go + bun)"
 
 build: daemon web
 
@@ -17,7 +17,7 @@ daemon:
 	cd daemon && go build ./...
 
 web:
-	cd web && npm install --no-fund --no-audit && npm run build
+	cd web && bun install && bun run build
 
 worker-image:
 	docker build -f docker/worker.Dockerfile \
@@ -29,8 +29,8 @@ verify: daemon
 	cd daemon && go vet ./...
 	cd daemon && staticcheck ./... || true
 	cd daemon && go test ./... -count=1
-	cd web && npm run build
-	cd plugin && npx tsc --noEmit -p tsconfig.json
+	cd web && bun run build
+	cd plugin && bunx tsc --noEmit -p tsconfig.json
 
 test:
 	cd daemon && go test ./... -count=1
@@ -42,7 +42,7 @@ e2e:
 	bash deploy/e2e.sh
 
 integration:
-	node e2e/driver.mjs
+	bun e2e/driver.mjs
 
 e2e-integration: integration