[Enhancement] Improve and complete Polish (pl) translations

[wlzukowski]

Currently, the Polish (pl) language support in Hi.Events is incomplete, and the quality of the existing translations is quite poor and unnatural in some places.

I would like to contribute by doing a comprehensive review and rewrite of the Polish translation to ensure it sounds natural

My plan is to:

• Update the backend translation files.

• Update the frontend translation files using Lingui.

As per the contribution guidelines, I am opening this issue first to get alignment before starting the work and submitting a PR.

[daveearley]

Thanks for the offer, @wlzukowski! We'd happily accept improvements to the translations.

[wlzukowski]

Update: Opened a first-pass PR

As noted in PR, translating from .po/.json files alone is context-unaware and can hurt quality. Strings that look fine in isolation often don't fit how they're actually used in the UI, so I went through the app interface directly (creating attendees, events, etc.) rather than translating file-by-file.

One thing to note: this isn't a complete rewrite. I expect to keep finding strings that need fixing as I use the app more, so I'll follow up with further PRs. Leaving this issue open to track ongoing Polish translation work.

If any users of the app, or others working with the Polish translation, notice any inaccuracies, please let me know. Either as a comment here or a message. I'm happy to fix anything that got missed.