[BUG] The date formats do not contain a comma in between the date and the time

[ozmium]

Great work with the app so far 👍. I noticed that the date formats in the GIt history list do not contain commas. These new date formats are mentioned here: #860

Is it possible to add a comma in between the date and the time please? That is what most other apps do, and it's a recommended standard.

Steps to reproduce the bug, using SourceGit 2025.11

1. Launch SourceGit 2025.11
2. Open the Preferences / Settings ➔ General ➔ Date Format ➔ Click the drop-down menu
3. Observe the list of date formats available
4. Look at some Git commits with a chosen date format

Expected Result

• All the date formats should have a comma in between the date and the time.

Actual Result

• None of the date formats have a comma between the date and the time.

Reasons why it's needed - Impact on customers

• It's more difficult to read the entire DateTime, when there is no comma.
• It's easier and quicker to read the Date Time when the commas are there, because it splits the text into 2 parts.
• The comma makes it clearer to see which part is the date and which part is the time.
• This guideline recommends adding commas as an international standard: https://cldr.unicode.org/translation/date-time/date-time-patterns (search for "comma" in the article)
• Other apps use the comma, such as SourceTree, Android Studio, IntelliJ IDEA, PyCharm, and so on.

Example in SourceTree Git client:

Image source: https://foxsb.mystrikingly.com/blog/sourcetree-very-slow

Example in IntelliJ IDEA or Android Studio:

Image source: https://www.jetbrains.com/guide/java/tutorials/creating-a-project-from-github/the-git-tool-window/

[ozmium]

A great option would be to allow the user to customize the date format to whatever they want. That's what MeGit does.

[love-linger]

Done