docs: realistic dev servers (GitHub, Atlassian, Cloudflare, Azure, PostgreSQL) all connected

Replace generic servers with real-world dev stack: GitHub, Atlassian,
Cloudflare, PostgreSQL, Azure DevOps, Filesystem — all showing green
"Connected" status. Discover page shows 16 popular servers (Stripe,
Datadog, MongoDB, etc.) with installed ones marked. Clients shows
just Cursor and VS Code. Fixed get_server_statuses mock to return
Record instead of array.

https://claude.ai/code/session_01W32JdTpYeN92qNrHPgMyVo

Author: claude