Merge branch 'animals' into main: animal/zoology system (A1-A8 + serialization)

Brings the full animal foundation onto main and folds its new defs into the
Defs/ subfolder layout introduced on main:
- animal genes -> Defs/Genes/Animal.json (split out of genes.json)
- animals/bodies/hediffs/needs/thoughts -> own Defs/<Type>/ subfolders
- ProductMeat/Bone/Leather + bigger world presets auto-merged via rename detection
- PawnDef un-sealed (AnimalDef : PawnDef); def-location doc comments updated to subfolders
- engine pointer kept at main's newer 96e19c7 (only adds directional sun shadows)

Build + --check-content clean: 11 def types, 33 genes, 35 plants, 32 traits.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Mods/Core/Defs/Genes/Animal.json

@@ -0,0 +1,51 @@
+{
+  "type": "Gene",
+  // Гены животных: организм-агностичные гены зверя (их несёт геном животного). Тело/обмен/движение/
+  // чувства/мозг + пол (локус) и размножение. Признаки читают системы животных (рост, ИИ, здоровье).
+  "defs": [
+    { "defName": "GeneMaxBodySize", "parent": "BaseNumericGene", "label": "gene.bodySize",
+      "default": 1.0, "min": 0.1, "max": 4.0, "tags": ["animal", "body"],
+      "effects": { "bodySize": "value" } },
+    { "defName": "GeneMetabolism", "parent": "BaseNumericGene", "label": "gene.metabolism",
+      "default": 1.0, "min": 0.2, "max": 3.0, "tags": ["animal", "metabolism"],
+      "effects": { "metabolism": "value" } },
+    { "defName": "GeneMoveSpeed", "parent": "BaseNumericGene", "label": "gene.moveSpeed",
+      "default": 1.0, "min": 0.2, "max": 3.0, "tags": ["animal", "movement"],
+      "effects": { "moveSpeed": "value" } },
+    { "defName": "GeneBloodVolume", "parent": "BaseNumericGene", "label": "gene.bloodVolume",
+      "default": 1.0, "min": 0.2, "max": 3.0, "tags": ["animal", "health"],
+      "effects": { "bloodVolume": "value" } },
+    { "defName": "GeneVision", "parent": "BaseNumericGene", "label": "gene.vision",
+      "default": 1.0, "min": 0.2, "max": 3.0, "tags": ["animal", "senses"],
+      "effects": { "vision": "value" } },
+    { "defName": "GeneBrainSize", "parent": "BaseNumericGene", "label": "gene.brainSize",
+      "default": 0.45, "min": 0.0, "max": 1.0, "spread": 0.03, "tags": ["animal", "brain"],
+      "effects": { "brainSize": "value" } },
+    { "defName": "GeneInsulation", "parent": "BaseNumericGene", "label": "gene.insulation",
+      "default": 0.5, "min": 0.0, "max": 1.0, "tags": ["animal", "temperature"],
+      "effects": { "insulation": "value" } },
+    { "defName": "GeneFurColor", "parent": "BaseNumericGene", "label": "gene.furColor",
+      "default": 0.5, "min": 0.0, "max": 1.0, "spread": 0.06, "tags": ["animal", "morphology", "color"],
+      "effects": { "furHue": "value" } },
+    { "defName": "GeneMaturityAge", "parent": "BaseNumericGene", "label": "gene.maturityAge",
+      "default": 90, "min": 1, "max": 400, "tags": ["animal", "lifecycle"],
+      "effects": { "maturityAge": "value" } },
+
+    // Пол как локус (фаза A3): аллели {X=0, Y=1}; самка XX, самец XY. Эффекта нет — пол читается из
+    // самих аллелей (наличие Y), не из выраженного значения. mutationChance 0 (X не мутирует в Y).
+    // Генерация особи-основателя задаёт пол явно (XX или XY), чтобы не возник невозможный YY.
+    { "defName": "GeneSex", "kind": "Discrete", "label": "gene.sex",
+      "variants": 2, "variantWeights": [0.5, 0.5], "mutationChance": 0, "tags": ["animal", "sex"] },
+
+    // Размножение (фаза A4): сезон гона фиксирован по виду (0 весна … 3 зима), срок вынашивания и помёт.
+    { "defName": "GeneBreedingSeason", "parent": "BaseNumericGene", "label": "gene.breedingSeason",
+      "default": 2, "min": 0, "max": 3, "spread": 0, "mutationChance": 0, "tags": ["animal", "reproduction"],
+      "effects": { "breedingSeason": "value" } },
+    { "defName": "GeneGestationDays", "parent": "BaseNumericGene", "label": "gene.gestationDays",
+      "default": 30, "min": 1, "max": 200, "tags": ["animal", "reproduction"],
+      "effects": { "gestationDays": "value" } },
+    { "defName": "GeneLitterSize", "parent": "BaseNumericGene", "label": "gene.litterSize",
+      "default": 1, "min": 1, "max": 12, "tags": ["animal", "reproduction"],
+      "effects": { "litterSize": "value" } }
+  ]
+}