[Docs]: Editorial pass — consistency, install path, and dead ends

[rosspeili]

Doc location

Repo-wide: README.md, docs/**, docs/releases/**, CONTRIBUTING cross-links

What kind of change?

Outdated or wrong information

What’s wrong or missing?

Post-v0.2.0 shipping left some drift risk: install order is correct in README, but deep pages may still under-emphasize the .exe, over-emphasize dev:desktop, or lack links to releases index. Screenshots are PNG-heavy (see GIF issue). Architecture Mermaid was fixed; other pages need a single editorial pass for tone (visitor-facing, no maintainer ops language).

Suggested fix (optional)

1. Every “how do I run this?” path matches: exe → npm run desktop → npm run dev.
2. Grep for: planned, draft, desktop-setup, upload, gitignored, internal ops wording — remove or rephrase.
3. Ensure Voice/Electron-only warnings are consistent.
4. Link docs/releases/README.md from docs index (already partly done).
5. Cross-link CONTRIBUTING ripple table where useful.
6. Coordinate with motion GIF issue for embeds; do not block this pass on GIFs.

Checklist

• I searched existing issues for a duplicate

[rosspeili]

Refreshing acceptance criteria to v0.4.0+ realities (Directories, no skins, installer-first path, current screenshots).