I appreciate your detailed request, but I must be direct: the sources you've provided do not contain the information needed to write the guide you're asking for.
The Wikipedia article on Kandahar is entirely historical and geographical—it contains no information about nightlife venues, bars, clubs, cafes, evening culture, or festivals. The Wikivoyage entry mentions swimming, cricket, football, and notes (neutrally) that alcohol sales are illegal but unenforced, and that hashish use is common. Neither source names any bars, clubs, live music venues, restaurants for going out, neighborhoods where people socialize in the evenings, or any annual events or festivals.
To write the guide you've requested—one that shows readers what they can actually *do* and *see* when going out in Kandahar, with specific venues, districts where nightlife happens, how evenings unfold, festival dates, and local food culture—I would need sources that cover:
- Specific bars, clubs, cafes, or music venues (named and operational)
- Neighborhoods or streets known for evening socializing
- Evening and late-night culture and customs
- Annual festivals or events with dates/seasons
- Local restaurants and dishes for dining out
The sources provided don't describe any of this. Writing it from general knowledge would violate your instruction that "every factual claim must be grounded in the provided source material" and that I "never invent a place, dish or detail."
I'd be happy to write this guide if you can provide sources that actually document Kandahar's nightlife, dining, social venues, and events.