* refactoring integration_tests::keys
* refactor integration_tests: extract new_account/send/restored_private_account helpers
Move repeated account-creation and transfer boilerplate into four public
helpers in integration_tests/src/lib.rs (new_account, send,
restored_private_account, assert_public_account_restored), then apply them
across keys.rs, ata.rs, auth_transfer/public.rs, auth_transfer/private.rs,
token.rs, and amm.rs. Net result: -816 lines of boilerplate.
* Additional refactors
* refactor(integration_tests): apply shared helpers to remaining test files
Use account_balance, get_account, new_account, send, and sync_private
helpers in public.rs, pinata.rs, private_pda.rs, program_deployment.rs,
and token.rs to reduce boilerplate and improve consistency.
* 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
