style(ui): improve readability and mobile responsiveness

[drondeseries]

🎨 Typography and Contrast

• Increased Base Fonts: Promoted microscopic [9px] and [10px] fonts to text-xs globally.
• Improved Contrast: Changed opacity-* classes to standard Tailwind semantic color classes like text-base-content/70 to improve legibility.
• Table Headers: Table column headers are now larger, properly upper-cased, and easier to scan.

👆 Touch Targets

• Buttons & Checkboxes: Upgraded the standard list/queue view buttons from minimum btn-xs sizes to btn-sm to make clicking/tapping on rows much more reliable.
• Checkboxes: Changed checkbox-xs to checkbox-sm globally.

📐 Layout & Spacing

• Layout Padding: Increased the base main wrapper padding on mobile from p-2 to p-3.
• Card Spacing: Modified grid column layouts in the FilesPage and HealthPage so that sidebar and content don't feel squished together on narrow desktop screens and correctly wrap on phones.
• Queue Long Names: Added word wraps to QueueItemCard so extremely long Usenet filenames wrap elegantly to multiple lines instead of shrinking or forcing horizontal scroll.

⚙️ Configuration Page & Navigation

• Mobile Navbar Shortcut: Added the AltMount logo and a quick-access Settings gear icon directly to the top navbar when viewed on small screens, as the sidebar drawer hides it.
• Section Contrast: Addressed feedback that config sections blended into the background too much by switching all configuration cards and main page wrappers globally from a flat border with high transparency to border-2 (double thickness) with stronger background opacities (bg-base-200/60).
• Mobile Header Visibility: Fixed a responsive flex-wrap bug that was causing the "Configuration" title and gear logo to disappear entirely on small screens.
• Label Wrapping: Fixed various labels across all config tabs that were cutting off instead of gracefully wrapping to the next line on mobile devices (e.g. WebDAV Mount Path, Validation/Cleanup descriptions).

Testing

• Front-end build verified successfully.
• Verified compilation with React TypeScript linter.