buildBankTracking summed expected_amount for all active unpaid bills with no
resolveDueDate gate, so annual/off-month bills inflated unpaid_this_month and
the bank remaining (same class as QA-B5-02, live on the bank path). getTracker
now derives the unpaid total from the already-gated rows (netting partials) and
passes it in. summary.remaining/total_remaining now use the bank card's own
remaining in bank mode (agreeing with safe-to-spend), and a stray balance/100
is now fromCents.
New tests/trackerService.test.js: gating fix, summary totals, bank-mode
remaining agreement, cents<->dollars, getOverdueCount gating.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>