## I have read the CONTRIBUTING.md file.
YES
## What kind of change does this PR introduce?
Re-add. Reapplies the Multigres Private Alpha docs section removed in
#50662, ready to merge once Sugu gives the go-ahead. Do not merge until
then.
Linear: MUL-1621 (follow-up to MUL-452).
## What is the current behavior?
Multigres docs section is down (per #50662): no overview/compatibility
pages, no sidebar entry, no features-table row, no "What you get" cards.
## What is the new behavior?
Exact reapply of #49020 (with Multigres marked Private Alpha): overview
guide at `/docs/guides/database/multigres`, compatibility stub, Database
sidebar entry, features-table row, "What you get" cards, and the
`ContentListings` optional-`href` support they rely on.
Base branch is the revert PR (#50662) so the diff here is legible now;
retarget to `master` once #50662 merges.
## Additional context
- `pnpm --filter docs exec vitest run lib/content-listings.test.ts` — 22
passed
- Blocked on Sugu's go-ahead — `do-not-merge` label applied
---------
Co-authored-by: Nik Richers <nik@validmind.ai>