- Fetch dates in parallel chunks of 5 instead of sequentially
- Simplify page.js to server component, move default dates into viewer
- Replace showTable with hasFetched for clearer semantics
- Normalize date display to yyyy-MM-dd for both banks
- Remove unused Geist_Mono font import (~50KB savings)
- Change lang to "vi" for Vietnamese bank data context
- Clean up empty blocks and redundant variables in API route
- Add card layout, loading spinner, error/empty states for better UX
- Full dark mode support for date picker, tables, and inputs via CSS vars
- Extract reusable RateTable component, remove duplicate table markup
- Fix CSV injection vulnerability with escapeCsv sanitizer
- Fix URL.createObjectURL memory leak
- Replace JS hover handlers with CSS hover for better performance
- Add aria-live region for screen reader announcements
- Fix metadata from default "Create Next App" to proper title
- Differentiate table stripe/hover colors in light mode
tiennm99