Honest charging wording and community translations

Fixes

• The charging summary no longer reads like a live measurement. "Charging well at 81W" showed the negotiated maximum the charger agreed to supply, not the watts actually flowing, which was confusing next to a wall meter. It now says "Charging well · up to 81W". For live measured draw, see the menu bar watts toggle or the Pro Power Monitor. Thanks @stevetrease for the careful measurements (#317).

Translations

• Italian refinements from @bovirus.
• Traditional Chinese improvements from @jimmyorz, including translations for strings that were still showing in English.