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- cmd/frontend/web: honour ?instance=<hostname> query parameter on the initial scope hydration so /view/?instance=lb-ams opens the dashboard scoped to that maglevd. The cookie is updated on consumption; an unknown name still falls back to the first server via App.tsx. - cmd/client, cmd/frontend: --server now accepts bare hostnames. A new internal/netutil.EnsurePort canonicalises addresses by appending :9090 when no port is given, with bracketing for bare IPv6 literals. Unit test covers the IPv4/IPv6/bracketed/already-ported permutations. - Makefile: new self-documenting `help` target as the default rule; every user-facing target now carries a `## ` description that the awk-based help auto-extracts. fixstyle-web skips with a friendly message when prettier isn't installed instead of failing on npx. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>