fahed a2e7aa16cd Add Slides builder, data source selector, fix cross-year labels ...

Features:
- Slides page: build presentations with configurable charts per slide
- Export slides as HTML zip
- Data source dropdown (Museums active, Coffees/eCommerce placeholders)
- Renamed app to 'HiHala Data' with 'Museums' as subtitle

Fixes:
- Cross-year period labels now show 'Nov 25–Jan 26' instead of misleading year
- Period display boxes updated to use smart labels

UI:
- New nav link for Slides
- Mobile nav updated
- Data source select styled to match brand

2026-02-02 17:36:15 +03:00

16 KiB

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