Add AdventureBot groups, raid preparation and shared travel

Implement native bot recruitment and player admission, leader-owned destinations, intent-specific capacities, preparation scheduling and shared graph and flight travel. Support native group instance visits and separate raid entrances.

Include pending personality-driven faction PvP and solo fleeing, preserving the absolute group fleeing exclusion. Add regression fixtures, migration, documentation and test-server evidence.

sql/custom/world/2026_10_28_01_adventure_groups.sql

@@ -0,0 +1,8 @@
+-- Category weights only. Native map types distinguish dungeon from raid entrances;
+-- formation locations must additionally belong to a capital-city zone.
+INSERT IGNORE INTO vcore_adventure_location_intent(category,intent,weight)
+ SELECT category,'groupformation',1 FROM vcore_adventure_location_intent
+ WHERE intent='social' AND weight>0;
+INSERT IGNORE INTO vcore_adventure_location_intent(category,intent,weight)
+ VALUES ('instance_entrance','raid',5);
+-- Existing daily plans remain intact. Newly generated days add preparation hours.