## What kind of change does this PR introduce?
UI and copywriting improvements for temporary access.
## What is the current behavior?
The temporary access UI still used older JIT/ephemeral naming in some
places, did not clearly explain the setup requirements, and had to infer
unavailable states from Platform error message text.
## What is the new behavior?
The settings UI now uses temporary access naming consistently, explains
that temporary access uses short-lived tokens for manual database
connections, and renders clearer unavailable states for projects that
require either a Postgres upgrade or a platform migration.
The Studio query now consumes Platform’s structured `unavailableReason`
contract instead of parsing human-readable error strings, so the UI owns
the copy while Platform owns the eligibility reason.
Validation:
- `pnpm eslint
components/interfaces/Settings/Database/JitDatabaseAccess/JitDbAccessConfiguration.tsx
data/jit-db-access/jit-db-access-query.ts`
- `pnpm tsc --noEmit --pretty false`
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* IP range input now supports one CIDR range per row with add/remove
rows and form integration.
* **Documentation**
* Replaced “JIT” wording with “Temporary” / “Ephemeral token-based”
access across UI, dialogs, toasts, and help links.
* Added minimum PostgreSQL version requirement (17.6.1.081+).
* **Improvements**
* Per-row CIDR validation with precise nested error messages.
* Refined layout spacing and moved the temporary-access configuration
earlier in Database settings.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Etienne Stalmans <etienne@supabase.io>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: Joshen Lim <joshenlimek@gmail.com>
