Phase 5.7 / 0.0.14.7

- Impact range moved from 140-200 to 240-320 blocks; matching previous-world values migrate once.
- Removed the long Elytra flight layer.
- Meteor now emits short firework-launch whooshes every 8 ticks from its CURRENT position, plus short fire crackle every 5 ticks.
- Temporary impact cue is vanilla entity.generic.explode for normal Sound Physics processing.
- Full Explosion Overhaul scaling is intentionally deferred to Phase 6 because that mod hooks real Explosion.finalizeExplosion. Phase 6 must use a normal Minecraft/Forge Explosion and remove the temporary manual impact cue.
- Do not add a hard Explosion Overhaul dependency or call its internals directly.
