fix(04): revision 1 — depends_on format + D-12 client list coverage

- 04-02/03/04: change depends_on from filename format to plan ID format
  ('04-01-PLAN.md' → '04-01') to match orchestrator expectations and
  Phase 3 precedent
- 04-02: add Task 3 implementing D-12 — /admin/clients list shows brand
  names below client name and LTV as sum of project accepted_totals;
  update getAllClientsWithPayments query and ClientRow component;
  add src/app/admin/page.tsx, src/lib/admin-queries.ts,
  src/components/admin/ClientRow.tsx to files_modified

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.planning/phases/04-progetti-multi-project/04-04-PLAN.md

@@ -4,8 +4,8 @@ plan: "04"
 type: execute
 wave: 3
 depends_on:
-  - 04-02-PLAN.md
-  - 04-03-PLAN.md
+  - "04-02"
+  - "04-03"
 files_modified:
   - src/app/api/internal/validate-slug/route.ts
   - src/proxy.ts