- Clamped `formatDuration` to return `0ms` for non-positive, NaN, or infinite inputs.
- Updated usage report rendering to suppress reset countdowns when `resetsAt` is absent or no longer in the future.
- Added unit tests for `formatDuration` covering clamped values and standard duration formatting.
- Updated `formatNumber` to use a helper that removes trailing `.0` for compact K/M/B values.
- Adjusted small-value branches so exact thousands and millions now format as whole units while keeping one decimal for fractional values.
- Revised the function comment examples to match the new `1K` and `1M` outputs.