ecosystem(mskanban): add MSKanban documentation

[Musiker15]

Summary

Adds MSKanban as the third entry under ecosystem/, mirroring the msk-paste / msk-shortener layout.

• Project: MSK-Scripts/mskanban
• Current release: v0.1.0-beta
• Replaces the placeholder "MSKanban planned" note in ecosystem/intro.md

Pages

Seven pages under ecosystem/mskanban/:

File	Content
_category_.json	Sidebar entry (position 4 — after MSK Shortener)
index.md	Overview, USP table vs Trello/Jira/Planka/Wekan, tech stack
installation.md	Self-host guide: Docker + bare-metal Apache, full env-var reference
getting-started.md	First-10-minutes walkthrough with the zero-knowledge model explained for non-crypto users
features.md	Tour: boards, 5 views (Kanban/Calendar/Timeline/Table/Analytics), milestones, automation, real-time, presence
api.md	REST API reference (~56 routes summarised in tables, OpenAPI spec linked)
privacy.md	Full key hierarchy, what the server sees vs doesn't, threat model summary, GDPR
faq.md	Common questions — recovery key loss, 502 troubleshooting, Passkey RP-ID mismatch, etc.

Build check

$ yarn build
[SUCCESS] Generated static files in "build".
Done in 10.36s.

No broken links (the project's onBrokenLinks: 'throw' is on). 117/120 documents indexed by lunr-search; build emits seven new HTML pages under /ecosystem/mskanban/.

Notes

• All deep-links to MSKanban-specific files (ADRs, threat model, source code) point at the upstream repo so they keep working as MSKanban evolves
• The "planned: MSKanban" line in ecosystem/intro.md is replaced with a live link to the new section
• Style mirrors the existing ecosystem docs — :::info, :::tip, :::warning, table-heavy reference style, single index.md overview followed by feature pages

[github-actions]

⚠️ Deprecation Warning: The deny-licenses option is deprecated for possible removal in the next major release. For more information, see issue 997.

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None