Merge branch 'main' into dev

security: fix critical RLS vulnerability and standardize authenticati…

…on (#36)

- Remove dangerous wildcard RLS policies that allowed cross-user data access
- Standardize authentication to use only Supabase anonymous auth
- Remove client-side user ID generation and localStorage manipulation
- Fix security vulnerability where any anonymous user could access all other anonymous users' data

Fixes #35

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chore: bump version to 1.1.2 for inputmode patch

- Add inputmode="decimal" to amount input for better mobile UX
- Optimizes mobile keyboard for numeric input with decimal point

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Merge branch 'dev'

SpendCheck v1.1.0 - Back-dating & Enhanced UX

Major Features:
✨ Back-dating spending entries with custom date selection
✨ Enhanced iOS-style datetime picker with modal improvements
✨ Complete timezone handling (UTC storage, local display)

UI/UX Improvements:
🎨 Consistent datetime selector styling matching ion-items
🎨 Translucent modal backgrounds with backdrop blur
🎨 "No category" display for uncategorized entries
🎨 Improved History view with proper timestamp display

Technical Enhancements:
🔧 Proper local-to-UTC-to-local conversion flow
🔧 User-selected timestamps prioritized over creation time
🔧 Enhanced mobile-ready interface
🔧 Multiple entry support with improved dialog behavior

This release significantly improves the spending tracking experience
with professional datetime handling and enhanced visual design.

chore: bump version to 1.0.0 for initial release

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