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/FlameLion.draft.json

@@ -0,0 +1,76 @@
+{
+  "schemaVersion": 1,
+  "id": "FlameLion",
+  "kind": "Animal",
+  "usage": "companion_visual",
+  "profile": "biped_short",
+  "boneMappingReady": false,
+  "height": 0.6,
+  "maxTriangles": 2000,
+  "assetRoot": "Assets/Bundles/Characters/Animal/FlameLion",
+  "staticPrefab": "Assets/Bundles/Characters/Animal/FlameLion/FlameLion.prefab",
+  "approvedMesh": "AIClient/Assets/Bundles/Characters/Animal/FlameLion/FlameLion.fbx",
+  "rigSource": "Tools/output/flamelion_dgx/high_rig/rigged.glb",
+  "lowUp": "Y",
+  "skinOverrides": [],
+  "outputDir": "Tools/output/companions/FlameLion",
+  "visualPrefab": "Assets/Bundles/Characters/Animal/FlameLion/FlameLion_Companion.prefab",
+  "reviewScene": "Assets/Bundles/Scenes/Review/Companion_FlameLion_Review.unity",
+  "reviewOriginX": 140,
+  "rootBone": "",
+  "chestBone": "",
+  "faceRight": "",
+  "faceLeft": "",
+  "rightFoot": "",
+  "leftFoot": "",
+  "rightFootTip": "",
+  "leftFootTip": "",
+  "rightArm": "",
+  "leftArm": "",
+  "walkStride": 0.065,
+  "walkLift": 0.018,
+  "walkSeconds": 1.2,
+  "walkBindCalibration": true,
+  "walkSourceWeight": 0.25,
+  "idleSeconds": 1.8,
+  "idleBreath": 0.003,
+  "idleSourceWeight": 0.08,
+  "attackStyle": "flame_roar",
+  "attackEvent": "OnCompanionAttackImpact",
+  "attackSeconds": 1.2,
+  "attackSourceWeight": 0.08,
+  "attackWindup": 0.3,
+  "attackImpact": 0.5,
+  "attackRecover": 0.9,
+  "attackLeanDegrees": 6,
+  "attackArmDegrees": 35,
+  "attackLunge": 0.005,
+  "attackReach": 0.02,
+  "maxRootTilt": 25,
+  "groundTolerance": 0.003,
+  "motions": [
+    {
+      "name": "Idle",
+      "sourceDir": "Tools/output/companions/FlameLion/motions/Idle",
+      "prompt": "a small bipedal lion stands upright on two feet with relaxed forepaws and gentle breathing, keeping its large mane stable",
+      "duration": 2.0
+    },
+    {
+      "name": "Walk",
+      "sourceDir": "Tools/output/companions/FlameLion/motions/Walk",
+      "prompt": "a small bipedal lion walks upright on two feet with alternating short steps and gentle forepaw swings, keeping its head facing forward and its large mane stable",
+      "duration": 2.0
+    },
+    {
+      "name": "Attack",
+      "sourceDir": "Tools/output/companions/FlameLion/motions/Attack",
+      "prompt": "a small bipedal lion braces on two feet, draws back slightly to gather energy, spreads both forepaws and thrusts its head forward once to release a flame spell, then recovers to its upright resting stance",
+      "duration": 2.0
+    }
+  ],
+  "headBone": "",
+  "neckBone": "",
+  "attackHeadPitchDegrees": 8,
+  "attackHeadReach": 0.015,
+  "anatomyNotes": "Disabled proposal. Inspect this lion own TokenRig before mapping all bones or selecting mane/tail skin regions. Keep the prototype upright biped anatomy. The proposed flame_roar behavior needs head/neck and braced forepaw authoring and QA; it is not yet implemented. Do not copy FireCat bone names, skin overrides or arm amplitudes. Jaw motion is conditional on a real independent jaw bone."
+}