[SandObserver]

Summary

• Add pickHaiku to the Backup widget: each card draws the first shuffled haiku whose lines all fit the card width and height, or plain rows when none fits.
• Remove the per-line fallback that drew an over-wide line as a plain row and left a partial haiku.
• Drop one-line haikus from the pool and split "Keep it safe." into two lines in every locale.
• Add nine short two-line haikus to ui.haikus in en, de, es, fr, fa and zh-Hans, and to the English fallback.

Testing
All green. Added 4 tests for haiku selection.

Changelog

Fixed

• Backup cards show a whole haiku or none, never part of one.

Added

• Nine short Backup haikus that fit small cards.

Checklist

• Stays within the project constraints: one container, no runtime dependencies, no build step (see CONTRIBUTING.md).
• Tests added or updated for new logic, and the full suite, lint, and typechecks pass.
• Docs updated if behavior or configuration changed.