Fix trip seat filtering and enable null seats display

feat: rebrand FALSA to FALZH with updated supabase schema, tool names, and prompts

feat: LLM-driven driver message cleanup for phone numbers and names

feat: skip optional trip fields and accept natural date expressions

add driver name search for passengers

support unregistered drivers from group messages and warm new user onboarding

replace numbered trip list with trip cards for driver delete/modify/list

rename booking leads to trip selections

use phone_number instead of remoteJid for driver notifications

make trip search fields optional; update LLM prompts to search/book immediately with partial info

feat: send trip cards as individual messages and resolve trip_id from replies

feature: modify and delete driver trips

change to (remoteJid)

first commit