✨(frontend) add /new route for document creation

[arnaud-robin]

Introduce a /new route that automatically creates a document and redirects users to it. This enables direct document creation via URL, bookmarks, or automation scripts.

When unauthenticated users access /new, they are redirected to login instead of home page since user intent is explicit.

This addresses user requests for programmatic document creation and provides a shareable link for "create new document" actions.

[github-actions[bot]]

Size Change: +2.15 kB (+0.05%)

Total Size: 4.07 MB

Filename	Size	Change
apps/impress/out/_next/static/b983448b/_buildManifest.js	0 B	-885 B (removed)	🏆
apps/impress/out/_next/static/chunks/1927.js	0 B	-703 kB (removed)	🏆
apps/impress/out/_next/static/chunks/6580.js	58.7 kB	+44.1 kB (+301.24%)	🆘
apps/impress/out/_next/static/chunks/8495.js	0 B	-60.7 kB (removed)	🏆
apps/impress/out/_next/static/chunks/pages/401.js	1.16 kB	-632 B (-35.29%)	🎉
apps/impress/out/_next/static/chunks/pages/404.js	942 B	-633 B (-40.19%)	🎉
apps/impress/out/_next/static/chunks/pages/docs.js	431 B	-715 B (-62.39%)	🏆
apps/impress/out/_next/static/chunks/pages/docs/[id].js	1.48 kB	-642 B (-30.33%)	🎉
apps/impress/out/_next/static/chunks/pages/home.js	9.97 kB	+2.06 kB (+26.13%)	🚨
apps/impress/out/_next/static/chunks/pages/index.js	447 B	-718 B (-61.63%)	🏆
apps/impress/out/_next/static/chunks/pages/offline.js	5.54 kB	-713 B (-11.4%)	👏
apps/impress/out/_next/static/css/e59c36535cf6abc9.css	0 B	-34.6 kB (removed)	🏆
apps/impress/out/_next/static/c58235b5/_buildManifest.js	966 B	+966 B (new file)	🆕
apps/impress/out/_next/static/chunks/2502.js	702 kB	+702 kB (new file)	🆕
apps/impress/out/_next/static/chunks/2664.js	1.21 kB	+1.21 kB (new file)	🆕
apps/impress/out/_next/static/chunks/3065.js	3.31 kB	+3.31 kB (new file)	🆕
apps/impress/out/_next/static/chunks/4199.js	14.6 kB	+14.6 kB (new file)	🆕
apps/impress/out/_next/static/chunks/pages/new.js	593 B	+593 B (new file)	🆕
apps/impress/out/_next/static/css/4b1fa791cbc139db.css	33.7 kB	+33.7 kB (new file)	🆕
apps/impress/out/_next/static/css/cef13c4dff76f68f.css	1.11 kB	+1.11 kB (new file)	🆕
apps/impress/out/new/index.html	1.28 kB	+1.28 kB (new file)	🆕

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[AntoLC]

Duplicate of https://github.com/suitenumerique/docs/pull/1574

[AntoLC]

Closed in favor of https://github.com/suitenumerique/docs/pull/1574