The hx-select reference moved running totals into an inline #account-totals tbody that
refreshes via edit-form-changed, so nothing posts to ::route/account-total or
::route/account-balance anymore -- their route handlers were referenced only by their own
registrations. Remove the two handler fns, their route registrations, and the now-unused
route keys from routes/transactions.cljc. The pure account-total* / account-balance* fns
(used inline to render the totals) are untouched.
Scorecard: modal routes ~12 -> ~10. Full suite 31 pass / no regression.