Mechanical `gofmt -w ./internal ./cmd`. Mostly struct-field realignment that
had drifted, plus a few trailing-newline fixes. No behaviour change — gofmt is
semantics-preserving, and build/vet/test are green either side.
Split out from the code-review fixes that follow so those stay reviewable
instead of hiding inside a wall of realignment.
Forex: add CAD to tracked currencies, add cross-pair syntax (EUR/USD,
EUR|JPY, etc.) for both !fx rate and !fx report with full historical
analysis computed from stored USD-base rates.
Adventure: fix midnight reset silently failing due to SQLite busy
contention with the reminder fire loop — propagate errors so the job
isn't marked complete on failure, add retry with backoff, and add
startup catch-up for missed resets and expired death timers.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
