Fix overflow buttons styling in Vaadin 25

[paodb]

Close #17

Summary by CodeRabbit

• Chores

  • Updated Vaadin framework to version 25.0.3
  • Updated Flowingcode commons demo dependency to version 5.1.0

• Style

  • Enhanced day-of-week selector button styling with improved visual treatment for disabled and read-only states

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[coderabbitai]

Walkthrough

This PR updates the Day of Week Selector component for Vaadin 25 compatibility by introducing a new theme-scoped CSS stylesheet, updating the component's CSS imports, bumping dependency versions, and adding a test AppShellConfigurator implementation to resolve styling issues with the overflow state.

Changes

Cohort / File(s)	Change Summary
Dependency & Build Configuration pom.xml	Updated flowingcode.commons.demo.version to 5.1.0, bumped vaadin.version to 25.0.3 in v25 profile, and added AppShellConfiguratorImpl.class exclusion in demo-jar packaging
Component Styling src/main/java/.../DayOfWeekSelector.java, src/main/resources/.../fc-days-of-week-selector.css	Added theme-scoped CSS import annotation for fc-days-of-week-selector.css; introduced new stylesheet defining circular 40px button styling with support for hidden, overflow, disabled, and readOnly states
Test Configuration src/test/java/.../AppShellConfiguratorImpl.java	Added new public test class implementing Vaadin's AppShellConfigurator with @Theme annotation; class body is empty

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Possibly related PRs

• refactor: add theme attribute to context menu to allow to scope styles #19: Both PRs add theme-scoped @CssImport annotations to DayOfWeekSelector.java for stylesheet targeting.

Suggested reviewers

• javier-godoy

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title accurately describes the main objective: fixing overflow button styling for Vaadin 25 compatibility, which directly addresses issue #17.
Linked Issues check	✅ Passed	The code changes successfully address issue #17 by adding CSS styling for the days-of-week selector, upgrading to Vaadin 25.0.3, and adding AppShellConfiguratorImpl for Vaadin 25 compatibility.
Out of Scope Changes check	✅ Passed	All changes are directly related to fixing overflow button styling in Vaadin 25. Dependency updates, CSS additions, and demo configuration are all necessary to resolve the reported issue.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@src/main/resources/META-INF/frontend/styles/fc-days-of-week-selector.css`:
- Around line 50-51: The focus-ring override for
vaadin-button.fc-days-of-week-selector-button removes the visible focus
indicator and harms keyboard accessibility; restore a visible focus style by
removing the box-shadow: none override (or replace it with an accessible focus
style) in the vaadin-button.fc-days-of-week-selector-button[focus-ring] rule so
keyboard users can see focus — locate the selector
vaadin-button.fc-days-of-week-selector-button[focus-ring] and either delete that
declaration or set a clear, high-contrast focus outline/box-shadow instead of
none.