[Bug] UI font size setting is saved but not applied on mobile

[EvgenyGortsev]

Description

On mobile, changing the UI font size setting is persisted correctly, but it does not visually change the interface font size.

The issue reproduces in both:

• the mobile app;
• the mobile web UI.

The selected value remains saved after leaving and reopening Settings, but the actual UI stays at the same small font size.

Steps to reproduce

1. Open Omnigent on a mobile device.
2. Open Settings / Appearance.
3. Increase UI font size significantly.
4. Leave Settings and return.
5. Observe that the selected value is still saved.
6. Return to the main UI.

Actual behavior

The configured UI font size is persisted, but the visible interface font size does not change.

Expected behavior

The mobile UI should apply the selected font size consistently.

Scope

Reproduced in both the mobile app and mobile web UI.

This appears to be an application/rendering issue rather than a persistence issue because the configured value itself is saved correctly.

[github-actions]

🤖 Automated triage

• Bot assessment: Medium impact
• Priority: P2-medium
• Why: Mobile app and mobile web users cannot apply the saved UI font-size preference, impairing readability but not blocking a core CUJ; system or browser zoom provides a practical workaround.

This automated assessment uses the issue content and repository signals. Maintainers can override the priority label.