[Exeloo]

What does this PR do?

No linked issue: this is a full audit of docs/docs, requested directly. Every page was checked against the current UI labels, menus, shortcuts, settings, manifest and SDK, and fixed where it no longer matched.

• Getting started: introduction and create-your-first-project are rewritten as a path for a first-time reader. The EDITOR_TOKEN warning is kept and made clearer.

• Editor pages: labels and behaviour fixed on 13 pages, and the alt text of every screenshot rewritten. Examples: six docks, "Save layout as…", Settings › Editor › Appearance, the Game toolbar, Git amend and rollback.

• Plugin guide: wrong facts fixed:

  • the server contract uses streams;
  • a changed file clears its whole history;
  • the ECS plugin has four extension points;
  • the tour example's button is "Add";
  • the item owner's infer/claims hooks;
  • the viewport/scenes features.

  Missing fields and options are added.

• navigation.json is unchanged: no page is added, removed or renamed.

How do you test this PR?

• Before / after: about 60 claims were checked against the code by an independent reviewer. The four it found wrong are fixed in the last commit.
• docs-sync check, then mint validate, mint broken-links and mint a11y on a scratch copy of the site with all four source branches (engine, cli, loader, editor) and the docs redirects synced in: all pass, 83 pages.
• pnpm exec prettier --check and the pre-push hook (lint, tests): pass.
• Prettier ignores .mdx in this repo, so it does not check these pages.

Merge danger

Door: two-way, docs only: a revert is enough.
Blast radius: the public docs.nanoforge.eu, at this repo's next release (docs-sync), not at merge.

Follow-up issues

To be filed: onScreen:code-editor.script activation event never fires; Prettier does not check docs/docs .mdx; the static formatter only reads JSON/YAML Prettier configs.

Quality gate

Lane	Result
Docs	the change is docs
Correctness	independent reviewer: findings fixed in the last commit
Accessibility (content)	pass (alt text, headings, link text; mint a11y)
Security (content)	pass, no secrets or internal URLs
Style	style-reviewer: pass
Performance	N/A (docs)