Add formal enemies, remaining formal partners and synthesized UI SFX

- UI SFX v3: procedurally synthesized one-shots (Tools/synth_ui_sfx.py) wired to
  buttons, rewards, errors and red dots via UiSfx, gated by the SFX setting.
- Five formal enemies (Hornlet, Dashlet, Shellhorn, HornCaptain, GreatHorn):
  Hunyuan 50k -> 2000-tri XPbr, DGXA TokenRig, Idle/Walk/Attack, nested per type
  in PrototypeArena; PrototypeBattle.Enemy gains presentation-only Moving/Strikes.
- Formal partners for all ten pets in the arena and portraits, including new
  VineSprite, ThunderLeopard and TideWhale.
- Pipeline fixes: reject local TokenRig fallback, drop loose mesh islands,
  configurable Unity run_script timeout, companion static stage.
- Also includes concurrent work from another tool in this working tree
  (FlameLion, enemy combat FX, challenge mode, home explorer, server updates).
- Resources registered in Doc/ResDesc_*.md; verified on isolated :18081.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Config/Art/Companions/VineSprite.json

@@ -0,0 +1,72 @@
+{
+  "schemaVersion": 1,
+  "id": "VineSprite",
+  "kind": "Animal",
+  "usage": "companion_visual",
+  "profile": "biped_short",
+  "boneMappingReady": true,
+  "height": 0.5,
+  "maxTriangles": 2000,
+  "assetRoot": "Assets/Bundles/Characters/Animal/VineSprite",
+  "staticPrefab": "Assets/Bundles/Characters/Animal/VineSprite/VineSprite.prefab",
+  "approvedMesh": "AIClient/Assets/Bundles/Characters/Animal/VineSprite/VineSprite.fbx",
+  "rigSource": "Tools/output/companion_dgx/VineSprite/high_rig/rigged.glb",
+  "lowUp": "Y",
+  "outputDir": "Tools/output/companions/VineSprite",
+  "visualPrefab": "Assets/Bundles/Characters/Animal/VineSprite/VineSprite_Companion.prefab",
+  "reviewScene": "Assets/Bundles/Scenes/Review/Companion_VineSprite_Review.unity",
+  "reviewOriginX": 240,
+  "rootBone": "bone_0",
+  "chestBone": "bone_3",
+  "faceRight": "bone_22",
+  "faceLeft": "bone_26",
+  "rightFoot": "bone_22",
+  "leftFoot": "bone_26",
+  "rightFootTip": "bone_23",
+  "leftFootTip": "bone_27",
+  "rightArm": "bone_6",
+  "leftArm": "bone_13",
+  "walkStride": 0.055,
+  "walkLift": 0.016,
+  "walkSeconds": 1.1,
+  "walkBindCalibration": true,
+  "walkSourceWeight": 0.35,
+  "idleSeconds": 1.6,
+  "idleBreath": 0.003,
+  "idleSourceWeight": 0.08,
+  "attackStyle": "ranged_cast",
+  "attackEvent": "OnCompanionAttackImpact",
+  "attackSeconds": 1.1,
+  "attackSourceWeight": 0.12,
+  "attackWindup": 0.28,
+  "attackImpact": 0.5,
+  "attackRecover": 0.9,
+  "attackLeanDegrees": 4,
+  "attackArmDegrees": 65,
+  "attackLunge": 0.002,
+  "attackReach": 0.025,
+  "maxRootTilt": 25,
+  "groundTolerance": 0.003,
+  "motions": [
+    {
+      "name": "Idle",
+      "sourceDir": "Tools/output/companions/VineSprite/motions/Idle",
+      "prompt": "a small slender bipedal vine spirit stands upright and idles with gentle breathing",
+      "duration": 2.0
+    },
+    {
+      "name": "Walk",
+      "sourceDir": "Tools/output/companions/VineSprite/motions/Walk",
+      "prompt": "a small slender bipedal vine spirit walks upright on two feet with alternating short steps and gentle arm swings",
+      "duration": 2.0
+    },
+    {
+      "name": "Attack",
+      "sourceDir": "Tools/output/companions/VineSprite/motions/Attack",
+      "prompt": "a small slender bipedal vine spirit raises both leaf hands and pushes them forward once to cast a gentle healing spell, then returns to upright standing",
+      "duration": 2.0
+    }
+  ],
+  "skinOverrides": [],
+  "anatomyNotes": "Inspected this VineSprite DGXA TokenRig original: 28 bones. Root0 pelvis, spine1..3 (chest3), neck4/head5 (head tendrils, leaf hood and flower have no own bones); x-positive arm6..8 with hand chain9..12 and x-negative arm13..15 with chain16..19 from chest3; x-positive leg20/21/22 ankle/23 toe and x-negative 24/25/26/27 from root0. Grass support healer: ranged_cast heal like BudBud, own rig."
+}