Remove plain-text section labels above card frames since card titles
are self-descriptive. Remove compact-mode noise line. Cap note preview
at 100 chars. Saves 2-4 lines per board for better viewport fit.
Co-Authored-By: Claude Opus 4.6 <[email protected]>
TOTP, SSH, PGP, Nostr, and Seed/Managed Account boards now use
_board_card sections matching Password/Note treatment for consistent
visual language across all 9 board types.
Co-Authored-By: Claude Opus 4.6 <[email protected]>