v0.19.0

Added

• clearLocalData() now resolves with a LocalWipeReport, describing what was
  removed and, on an engine that could not confirm a deletion, what stays
  unverified.
• New exports: executeLocalWipe and snapshotWipeTargets
  (src/session/localWipe.ts) and clearWriterId
  (src/storage/storageManager.ts), plus the LocalWipeReport and
  WipeTargets types.
• Test coverage confirming that conditional writes (ifMatch / ifNoneMatch)
  on encrypted collections now produce an RxDB conflict entry on a lost race,
  rather than the silent last-write-wins the preconditions previously degraded
  to on this class of collection.
• Test coverage for connecting to a wallet account anchored by a standing unlock
  credential with no enrolled durable clients: a deeper delegation chain, an
  ephemeral, non-stable presentation holder, a clamped grant expiry, a mid-life
  authorization failure routing to reconnect, and a key epoch this app cannot
  open degrading a shared read to a warn-and-skip and a descriptor-less private
  collection to its fail-closed cipher. A wallet-composed counterpart case now
  exercises the same annex-shaped grant against @interop/wallet-core's real
  request/response composition.

Fixed

• clearLocalData() no longer orphans the anonymous replica: run from a
  connected session, it used to remove only the open replica, discard the
  anonymous seed, and mint a fresh identity, stranding the previous anonymous
  replica under a database name nothing could derive again. It now snapshots
  every database name before deleting anything and reaches both replicas.
• logout({ wipe: true }) no longer leaves empty database shells behind: RxDB's
  own removal clears a collection's table but leaves its IndexedDB database
  standing, and the erase grade now deletes those shells too.
• The writer id is now cleared by clearLocalData(); it previously survived
  every wipe grade.

Changed

• The logout and clear-data dialog copy is more precise about what each grade
  erases: the logout dialog names the connected replica specifically, and the
  clear-data dialog distinguishes the connected case (the synced copy survives)
  from the local-only case (this browser is the only copy).
• Upgraded @interop/wallet-core to ^0.56.0 and @interop/was-client to
  ^0.44.5.