Chronos

New features:
- Item tracking: drops, pickups, crafting, and villager trades (a:drop, a:pickup, a:craft, a:trade, or a:item for all)
- Paintings and item frames: placement, breaking, and item insertion/removal
- Natural growth: trees, mushrooms, bamboo, and amethyst attributed to whoever planted them
- Liquid-formed blocks (obsidian, cobblestone, concrete) traced back to their source
- Snow golem trails now logged
- Trampled crops now tracked
- Username change history (a:username)
- Optional leaf decay logging (off by default)

Config:
- New toggles: logging.item-events, logging.leaf-decay, logging.username-changes

Notes:
- New event types (drops, crafting, trades, username changes) are informational and not included in rollback scope