- The payoff projection panel swallowed fetch errors silently; now shows a
"Couldn't load … Try again" state (no projection) and a subtle "showing the
last result" retry banner when a refresh fails.
- loadProjection() now uses the currently-typed extra payment (via a ref that
mirrors the input), consistent with the debounced live preview, so refreshing
after a balance edit never drops an in-progress extra.
- Copy: extra-payment validation says "non-negative" (0 is valid); the capped
banner now reads "one or more debts won't pay off at this rate" (accurate for
the unpayable-debt case from the #1 fix, not just >50 years).
(#9 unsaved-preview hint was unnecessary — the input already auto-saves on blur.)
Build clean; client suite pass.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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