add refresh button to stride ui

[irmatgit]

These changes were required to put stride package in a UI.

• Added a refresh recent project list button in the create_app_no_project app.
• Synchronize size of the config.json with the get_recent_project()
• Adjusted grey color level in the UI to make the text more readable
• Define MAX_CACHED_PROJECTS variable to limit memory usage in small containers

[codecov]

Codecov Report

❌ Patch coverage is 86.45038% with 71 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.55%. Comparing base (6f2b52a) to head (a1ad20c).
⚠️ Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
src/stride/ui/app.py	47.82%	36 Missing ⚠️
src/stride/ui/settings/callbacks.py	15.00%	17 Missing ⚠️
src/stride/ui/settings/layout.py	8.33%	11 Missing ⚠️
src/stride/cli/stride.py	33.33%	4 Missing ⚠️
tests/test_app_cache.py	99.25%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #55      +/-   ##
==========================================
- Coverage   79.53%   75.55%   -3.99%     
==========================================
  Files          47       50       +3     
  Lines        6855     7935    +1080     
==========================================
+ Hits         5452     5995     +543     
- Misses       1403     1940     +537     

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[Copilot]

Pull request overview

This PR updates the STRIDE UI to better support packaging into a UI-centric workflow by improving project switching UX, limiting resource usage from concurrently open projects, and adjusting dark theme text colors.

Changes:

• Added a refresh button next to the project switcher dropdown (both with and without a loaded project).
• Introduced an LRU-style eviction policy for cached/open projects with a MAX_CACHED_PROJECTS limit.
• Increased the default recent-projects list size to 10 and adjusted dark theme text color variables.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
src/stride/ui/project_manager.py	Updates the default number of recent projects returned to 10.
src/stride/ui/assets/dark-theme.css	Tweaks dark theme text color variables.
src/stride/ui/app.py	Adds refresh UI + callbacks for project dropdown, and implements capped project caching with eviction.

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