Extend privacy mode coverage to remaining financial views
Transfers, trades, valuations, and holdings detail views were missing
the privacy-sensitive class, leaving amounts visible when privacy mode
was enabled. Also adds blur to the summary card partial (used by credit
cards, loans, etc.), account chart balances, and time series chart
containers (dashboard net worth and per-account charts).
* Add primary text color to amount in header
Applied the 'text-primary' class to the amount display in the valuations header for improved visual emphasis and consistency with the design system.
* Update header styles and add currency display
Applied 'text-primary' class to amount displays in trades and transfers headers for consistent styling. Added a secondary styled currency display to the valuations header for improved clarity.
