docs(digstore): note digs as a first-class alias for the digstore CLI

[MichaelTaylor3d]

Summary

• digs is now a first-class alias binary for the digstore CLI — installed alongside digstore everywhere it ships (cargo-install, the universal installer, the apt .deb). digs <args> behaves identically to digstore <args> (same subcommands, flags, --json output, help, exit codes).
• Adds a short, self-contained note to the CLI install page (docs/digstore/cli/install.md) stating this, with a one-line example (digs new my-app vs digstore new my-app).
• Adds a one-line mention in the command reference intro (docs/digstore/cli/command-reference.md) — does not duplicate/rewrite the full command table.
• Refs DIG-Network/dig_ecosystem#434 (task tracking issue). The digstore code + release-asset change ships in feat(cli): add first-class digs alias binary for digstore digstore#16.

Version bump

Minor (0.3.22 → 0.4.0) — documents a new capability, no breaking change. static/openrpc.json / static/openrpc-node.json are regenerated build artifacts whose embedded version field mirrors package.json (via npm run gen), so they bump alongside it.

Verified

• npm run build -- --locale en completed successfully (client + server compiled, sitemap regenerated) — confirms the markdown is valid and the site builds.
• No i18n translated copies were touched (per project convention, translations are maintained separately from the English source; this note only exists in the source docs for now).

Test plan

• CI green: commitlint, version-increment gate, deploy preview
• Docs page renders the new note correctly on the install page and command reference page

🤖 Generated with Claude Code

https://claude.ai/code/session_013B9i8jChaynPZhyc1DswHJ