MGS Origins Expanded 3.5.0 — Engine Change

This is a system-level rewrite, not a stat-only patch.

1. A Java Forge server engine now owns stealth/camo state, combat heat and The End reconnaissance.
2. Stealth is profile-aware and supports both ordinary sneak and ParCool crawl for the selected MGS stealth operators.
3. Attacks, projectile launches and incoming damage break engine camouflage and increase heat.
4. The End recon uses one owned ground scout at a time and treats a shoulder parrot as authoritative, preventing shoulder-triggered respawn duplication.
5. Recon highlights hostile/aggressive entities in 32 blocks for 5 seconds (100 ticks), refreshed every second.
6. Engine state is exposed via stable player tags for Origins/Apoli/KubeJS/other datapack bridges.
7. Legacy The End parrot callbacks remain as no-op resources so older references cannot spawn duplicates.
8. TEcho and Immersive Engineering references are not required by this engine.
9. The existing 53 Origin datapack, canon stats and earlier MGS resources remain bundled.
