Property ledgerBalanceMatchesTxns asserts displayed balance equals
sum(Given) - sum(Received) on either ledger screen. Catches the
class of bug where the server-fed CustomerModel.balance diverges
from the local-DB-fed CoreDatabaseDao sums (stale cache, partial
sync, deleted-txn handling glitch, etc.).
Generators are gated by screen state and weighted to push the run
through login -> home -> ledger quickly:
enterPhone (100), enterOtp (100), openCustomerOrSupplier (80),
taps (10), swipes (2).
Phone/OTP read from process.env via esbuild defines so credentials
never land in source. cmd/internal-tools/bundle-check is a quick
sanity tool to confirm the spec bundles before running uatu test.
pj