Streamlined site-to-site docs in new dedicated section. Removed old u… (#585)

* Streamlined site-to-site docs in new dedicated section. Removed old use-case guide and added redirects

* restructure use-cases, move network use cases to network sections

* Reorganize network routes and networks documentation structure

- Restructure use cases into by-scenario and by-configuration folders
- Reorganize images to match new doc structure (concepts, by-scenario, by-resource-type)
- Add screenshots for site-to-site guides (home, office, cloud)
- Add policy screenshots for networks use cases
- Update site-to-site docs to use two separate policies instead of bidirectional
- Fix Access Control Groups to use correct destination groups
- Move "Self-Hosted vs Cloud" page to about section
- Update navigation and add redirects for moved pages
- Add CLAUDE.md for Claude Code guidance

* cleaned up network docs/image folder structure

* Align site-to-site use case links and redirects

Co-authored-by: Cursor <cursoragent@cursor.com>

* Update CLAUDE.md with accurate project details

Fix Next.js version (14 → 16), add React 19/Tailwind/Pages Router
details, document MDX page conventions, image paths, and note
absence of test suite.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Fix broken images and hydration error on networks page

- Restore 6 network index images accidentally deleted in 4116092
- Fix keycloak image filename typo (keycloack -> keycloak)
- Fix hydration mismatch by replacing invalid <p><div> nesting with <div>

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Fix 4 broken internal links found in PR review

- Fix missing by-scenario/ segment in site-to-site-home and
  site-to-site-office Tile hrefs (network-routes use-cases index)
- Fix lazy-connections typo to lazy-connection (implement-zero-trust)
- Update stale redirect link to direct path for access-control

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Jack Carter <128555021+SunsetDrifter@users.noreply.github.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/pages/introduction.mdx

@@ -16,7 +16,7 @@ behind the hassle of opening ports, complex firewall rules, VPN gateways, etc.
 
 <Note>
     NetBird is an **[open-source](https://github.com/netbirdio/netbird)** project and can be self-hosted.
-    See a comparison between the self-hosted and cloud-hosted versions [here](/selfhosted/self-hosted-vs-cloud-netbird).
+    See a comparison between the self-hosted and cloud-hosted versions [here](/about-netbird/self-hosted-vs-cloud).
 </Note>
 
 There is no centralized VPN server with NetBird - your computers, devices, machines, and servers connect to each other directly over a fast encrypted tunnel.
@@ -55,13 +55,13 @@ It literally takes less than 5 minutes to deploy a secure point-to-point VPN wit
       description: 'Discover how to add team members to your NetBird network and manage user access.',
     },
     {
-      href: '/manage/network-routes/routing-traffic-to-private-networks',
+      href: '/manage/network-routes',
       name: 'Route Traffic to Private Networks',
       description:
         'Learn how to provide secure access to LANs, VPS instances, and corporate private networks.',
     },
     {
-      href: '/manage/network-routes/configuring-default-routes-for-internet-traffic',
+      href: '/manage/network-routes/use-cases/by-scenario/exit-nodes',
       name: 'Configure Default Routes',
       description: 'Set up default routes for internet traffic and configure exit nodes for your network.',
     },