feat: remove Conduit Matrix service

Remove all traces of the Conduit Matrix homeserver service including:
- Delete conduit-compose.yml.j2 template and conduit.yml task file
- Remove conduit from development services category
- Remove conduit Caddy reverse proxy configuration
- Remove conduit subdomain from domains.yml
- Remove conduit DNS A record from Route53
- Delete Matrix well-known files (client/server)
- Update all documentation from 25 to 24 services

🤖 Generated with [Claude Code](https://claude.ai/code)

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

group_vars/docker/services.yml

@@ -3,7 +3,7 @@
 # Service categories for organization
 service_categories:
   infrastructure: ["caddy", "authentik", "dockge"]
-  development: ["gitea", "codeserver", "conduit"]
+  development: ["gitea", "codeserver"]
   media: ["audiobookshelf", "calibre", "ghost", "pinchflat", "pinry", "hoarder", "manyfold"]
   productivity: ["paperlessngx", "baikal", "syncthing", "mmdl", "heyform", "dawarich", "pingvin"]
   communication: ["gotosocial", "postiz"]