Replace Hardcoded Text with t() for Translations

[vadal]

We currently have English text hardcoded in some Astro components. These strings must be wrapped with t() so they can be extracted into the translation system.

What to do

• Review all Astro components (pages, layouts, shared UI components).
• Find any English text that is not wrapped in t().
• Wrap visible text, titles, subtitles, labels, etc., using t('key').
• Do not break any existing HTML structure or styling.
• For dynamic values, only wrap the static part and leave variables untouched.

Translation Docs

[artemisln]

Could you assign this to me? @vadal 😄

[vadal]

It's yours! Thank you @artemisln!