chore(launch-prep): hide unfinished report/import surfaces, defer big builds

Ship-what's-done prep ahead of the prod cutover (launch ~today):

- Hide Financial + Marketing report cards from the reports landing
  (both were "Builder in development" placeholders gated on unbuilt
  data sources). Sales/Operational/Custom + templates/scheduling/
  exports remain live.
- Trim the Custom-report card copy to match the shipped basic builder
  (no group-by/filters yet; the builder page header was already honest).
- Hide the Bulk Import mockup from search-nav-catalog + the admin
  sections browser; /admin/import is now unreachable from the UI.
- Correct client-facing doc over-claims (waiting-list "next-in-line
  notification", Import) in features-list.md + new-system-feature-summary.md.
- Un-stale BACKLOG.md (Documenso phases 2-7 confirmed shipped).
- Log decisions + deferred work (full importer, full custom-builder,
  waiting-list, maintenance-log, paper-upload bug) to launch-readiness.md.

Deferred-importer design spec added at
docs/superpowers/specs/2026-06-01-bulk-import-design.md.

Verified: tsc --noEmit clean, eslint clean on changed files,
1512/1519 vitest pass (7 failures are Redis-down, unrelated).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/BACKLOG.md

@@ -14,7 +14,16 @@ Documenso phases 2-7 stay back-burnered per user.
 
 ---
 
-## A. Documenso build (deferred for later)
+## A. Documenso build (MOSTLY SHIPPED — see note)
+
+> **Stale-doc fix (2026-06-01):** a feature-completeness sweep confirmed
+> the core of phases 2–7 has since shipped and is wired — cascading
+> "your turn" invites (Phase 2), custom doc upload-to-signing (Phase 3,
+> `custom-document-upload.service.ts` + `/api/v1/interests/[id]/upload-for-signing`),
+> the field-placement UI (Phase 4, `upload-for-signing-dialog.tsx`), and
+> Project Director user-linking (Phase 7). The integration is treated as
+> feature-complete. The phase table below is kept for history; re-verify
+> the Phase 5/6 polish line-items individually before relying on them.
 
 **Source:** [`docs/documenso-build-plan.md`](./documenso-build-plan.md) — full phase plan with locked decisions (Q1–Q10).
 **Tracker delta:** [`docs/admin-ux-backlog.md`](./admin-ux-backlog.md) — what landed in Phase 1.