Use default font

[OpenSauce]

No description provided.

[Copilot]

Pull Request Overview

This PR implements the use of a default font throughout the application by centralizing font configuration. The change moves font configuration from individual widget calls to a single application-level setting.

• Moved the ICONS_FONT constant from src/gui/components/mod.rs to src/gui/mod.rs
• Set the default font globally using .default_font() in the application configuration
• Removed explicit font specifications from individual button and text widgets

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/gui/mod.rs	Added ICONS_FONT constant and configured default font for the application
src/gui/components/mod.rs	Removed the ICONS_FONT constant definition
src/gui/components/widgets/common.rs	Removed explicit font specification from icon_button function
src/gui/components/control.rs	Removed explicit font specifications from recording control buttons

Comments suppressed due to low confidence (1)

src/gui/mod.rs:12

• The constant name ICONS_FONT is misleading since it's now being used as the default font for the entire application, not just icons. Consider renaming it to DEFAULT_FONT or APP_FONT to better reflect its purpose.

pub const ICONS_FONT: Font = Font::MONOSPACE;