Kitty's Dagger v0.5.0 — DAI 3.1 ADDON MODERNIZATION

- Remains a datapack-only DAI addon; it does not claim an Experience save/world/title screen.
- Native blink_daggers:* item IDs remain stable.
- DAI item definitions now follow the current 3.1 structure.
- Cooldown UI uses arithmetic + function macros instead of hundreds of repetitive per-tick branches.
- Projectile movement/collision remains responsive at 20 TPS.
- W flash bookkeeping runs only while W is cooling down.
- Multiplayer orphan cleanup remains intentionally staggered to 10-second checks.
- Existing cooldowns and active normal dagger anchors are preserved during migration/reload.
