Add per-view font customization for article list views

[kion]

Summary

Adds font family and font size customization options to article list views (Card/Magazine/List/Compact), with settings persisted separately for each view mode.

Changes

• Added Font and Font Size submenus to the View context menu
• Font settings are stored per-view and automatically restored when switching views
• Description text auto-scales to 85% of title font size
• Uses same font options (12-20pt, system font list) as article view

Testing

• Open View menu (eye icon)
• Select Font or Font Size options - the view should reflect the changes properly
• Switch between view modes to verify settings persist independently