test+seed: fresh virtual wallet per @data scenario + seed events reach the index

- @data Before hook sets a UNIQUE virtual-wallet id (username) per scenario so each
  scenario starts on a fresh, empty virtual wallet — isolation without touching the
  physical wallet; "le portefeuille est vide" is now a fast check, not a full scan.
  resetDataState / clearWallet fan-out dropped.
- bootstrapWallet now submits each seeded PUBLIC event to the discovery index
  (mirrors the product createEvent), so a fresh virtual wallet can see seeded events
  through discovery rather than as its own docs.

Note: @data still red — seeded/published events do not surface in the discovery
read (submit→readIndex round-trip against the real broker), and some publish steps
time out. The 75s ORM hang is gone; this is a distinct discovery-index integration
issue, still under diagnosis.

.project/concepts/data-layer/_debt.md

@@ -6,3 +6,4 @@
 ## Raw markers (consolidate into blocks, then delete)
 - TOUCHED src/shared/data/readEntities.ts @2026-07-05 (session 0b064e8b-1717-421f-a20e-a4318ad217b1)
 - TOUCHED src/shared/context/FestipodDataContext.tsx @2026-07-05 (session 0b064e8b-1717-421f-a20e-a4318ad217b1)
+- TOUCHED src/shared/utils/ngBootstrap.ts @2026-07-06 (session 0b064e8b-1717-421f-a20e-a4318ad217b1)