## Why
The portal Users page worked on self-hosted but **403'd on SaaS**. It
called the proprietary admin endpoints (`/api/v1/user/admin/*`,
`/api/v1/team/*`, `ui-data/admin-settings`), all `hasRole('ADMIN')`.
SaaS users are always `ROLE_USER` (never `ROLE_ADMIN`), so those
endpoints reject them. This is the last SaaS-release blocker for the
portal.
## What
Route the SaaS build's Users page to the **existing**
`SaasTeamController` (invitation-based team management) - no new
backend. Done via a build-time flavor seam, mirroring the existing
`usersCapabilities` pattern.
- **New seam `@app/portal/usersBackend`** (interface in
`portal/api/usersBackend.ts`) with two impls resolved by the `@app/*`
alias:
- `proprietary/portal/usersBackend.ts` re-exports the existing
admin-endpoint functions - **self-hosted behaves exactly as before**.
- `saas/portal/usersBackend.ts` calls `SaasTeamController`
(`/api/v1/team/*`) via `apiClient.local` (already flavor-aware: SaaS
backend + Supabase JWT). Resolves the leader's team from `GET
/api/v1/team/my`, maps `TeamMemberDTO`/`InvitationDTO` onto the portal
`Member`/`PendingInvitation` types.
- **`manageInvitations` capability** (SaaS `true` / self-hosted `false`)
gates a new **Pending invitations** panel (list from `GET
/{teamId}/invitations`, Cancel via `DELETE
/api/v1/team/invitations/{id}`).
- **Remove re-enabled on SaaS** (was gated off): the roster remove
action now works at team scope against `DELETE
/{teamId}/members/{memberId}`, with a flavor-aware label ("Remove from
team" vs "Remove from org") and confirm copy.
- Invite (email) and rename routed through the seam (`POST /invite`,
`POST /{teamId}/rename`); `fetchAuthConfig` on SaaS is static (no
spurious admin-endpoint 403).
- **MSW handlers** (`mocks/handlers/teamSaas.ts`) mirror the controller
so the SaaS Users page is exercisable in mock mode. Registered in
`handlers` but deliberately **not** `embeddedDataHandlers` (would clash
with the editor's own `/api/v1/team/*` routes when portal shares its
origin).
## Constraints honoured
- No new backend endpoints - reuses `SaasTeamController`.
- Self-hosted path unchanged (proprietary impl re-exports the same
functions).
- No SaaS user is ever `ROLE_ADMIN` - `adminRole`/admin-only UI stay
hidden.
## Notes from an adversarial self-review (both fixed in this PR)
- Solo SaaS users' auto-created **personal team** now hides the Rename
control (the backend rejects renaming personal teams with 400) -
`isPersonal` threaded through `Team`/`TeamGroup`.
- Expired-but-still-`PENDING` invitations are filtered in the adapter,
and the expiry label no longer mislabels a just-expired invite as
"Expires today".
## Testing
- `task frontend:typecheck:all` - all 8 flavors pass.
- Portal vitest project: **122 passing** (added SaaS adapter +
shape-mapping tests via MSW, PendingInvitations panel, and
remove/manageInvitations/personal-team gating).
- `task frontend:lint` (ESLint `--max-warnings=0` + dpdm no circular
deps) and prettier clean.
## Open questions
- **Team resolution on SaaS**: I resolve the leader's single manageable
team (prefer a real non-personal team they lead). If a leader owns
multiple real teams, only the primary is shown - matches the "single
team" framing in the spec; flag if multi-team management is wanted.
- **`isSelf` on SaaS** uses the LEADER role (the portal Users page is
leader-only on SaaS, so the leader row is the viewer). Verified there's
no multi-leader creation path today; revisit if that changes.
Draft - not marking ready until reviewed.
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