🧪 [testing improvement] Enhance create_progress_bar test coverage

[ffalcinelli]

🎯 What: The test_create_progress_bar function in src/utils/ui.rs was not thoroughly testing the initial properties of the returned indicatif::ProgressBar, and it lacked coverage for edge cases like zero length.

📊 Coverage: The new assertions test:

• Verification of the initial position (starts at 0).
• Verification of the initial finished state (is_finished is false).
• A new test case test_create_progress_bar_zero_len validating proper behavior with a length of 0.

✨ Result: Increased test reliability and behavior coverage for the create_progress_bar UI helper.

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PR created automatically by Jules for task 14770113970257680739 started by @ffalcinelli

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.54%. Comparing base (82ab166) to head (1752935).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #146   +/-   ##
=======================================
  Coverage   92.54%   92.54%           
=======================================
  Files          27       27           
  Lines        2227     2227           
=======================================
  Hits         2061     2061           
  Misses        166      166           

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