Cryptid Core Co Field Operations

 0.8.0-a — Stage 8a: Deer & Prints Pass

- FIX: deer footprints now actually appear in the world. Root cause was a
  broken block model — the base model inherited from `minecraft:block/thin_block`
  (the vanilla glass-pane parent) and only supplied `end`/`particle` textures
  the parent never referenced. Prints were being stamped correctly all along
  but rendered invisibly. Now uses a flat plane model with a `#top` texture
  reference, matching the working Bigfoot pattern.
- FIX (bonus): deer plaster cast blocks had the same broken model inheritance.
  Fixed base + all variant models — you may not have noticed if you were only
  inspecting casts as items.
- NEW: Sambar Deer — big dark-coated taiga deer, competes with Elk (30% roll
  in taiga biomes), bucks carry heavier prong antlers than the local elk.
- NEW: Moose — largest deer in the mod, competes with Reindeer (25% roll in
  snowy biomes), bucks grow broad palmate paddle antlers instead of prongs.
  Rare enough that seeing one at all counts as a good day. Extra venison
  bonus roll on kill.
- NEW: kid-sized Bigfoot footprints — young Bigfoots now stamp visibly
  smaller prints on the same 5-block stride, all 9 fur colors covered.
- CHANGE: Bigfoot predation retuned to feel like a rare encounter.
  15% roll gate after cooldown, 10-block proximity trigger (was 24-block
  bounding box inflation), 50-block drag cap, fresh bone pile at destination.
  Elders no longer hunt actively — kept for group presence and rock-throw
  authority only.
- CHANGE: bone piles from predation now spread across the map instead of
  clustering at Bigfoot nests. If no existing pile is nearby, the Bigfoot
  picks a random direction 30 blocks out and drags there.
- CHANGE: does no longer render antler geometry regardless of variant
  (side effect of the Moose dimorphism pass — was likely displaying flat
  antler slabs on some existing does).