* initialize pq encryption changes
* key agreement update
* add test and other fixes
* ci fixes
* fix unit tests
* updates from main and ci
* added updated specs for pq encryption
* addressing comments
* addressed comments
* fix clippy errors from main merge
* Rebased to main
BREAKING CHANGE: LEZ crates have been moved from top-level directories into
a dedicated `lez/` subdirectory. The following crates were relocated:
common → lez/common
indexer → lez/indexer
explorer_service→ lez/explorer_service
keycard_wallet → lez/keycard_wallet
mempool → lez/mempool
sequencer → lez/sequencer
storage → lez/storage
testnet_initial_state → lez/testnet_initial_state
wallet → lez/wallet
wallet-ffi → lez/wallet-ffi
Any external tooling, scripts, or paths referencing these crates at their
previous top-level locations must be updated.
