Migrate Layout to DaisyUI

[ChristianHuehn]

Feature request

Part of epic #4367

Description

As a developer, I want the Layout to use DaisyUI with zoneless signals so that we have a modern, consistent styling approach.

Layout means especially the 2 top bars and the map. so they all can grow correctly

Acceptance criteria

• Layout uses DaisyUI classes instead of custom SCSS
• Layout works zoneless with signals
• All SCSS files related to Layout are removed

Assumptions & Exclusions

This is a refactoring task focused on migrating styling and reactivity approach.

Development notes (optional Task Breakdown)

• Remove SCSS dependencies
• Implement DaisyUI classes
• Convert to zoneless signals
• Test functionality

Open questions

[ChristianHuehn]