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>

Doc/UIPrefabCreater/UI_MainHUD.json

@@ -2,7 +2,7 @@
   "schemaVersion": 1,
   "prefabName": "UI_MainHUD",
   "prefabPath": "Assets/Bundles/UI/Prefab/UI_MainHUD.prefab",
-  "description": "HUD 主界面 / candy。参考 Clash of Critters 营地式入口布局，采用项目主题；1080×1920，JSON→Prefab。中央为原创营地插画，G0 资源与训练/教学关进度由 PrototypeGame 存档绑定，功能入口通过 MainHUD.* 事件接入。保留网络状态和重连绑定，无主题切换按钮。",
+  "description": "HUD 主界面 / candy。参考 Clash of Critters 营地式入口布局，采用项目主题；1080×1920，JSON→Prefab。中央为去掉人物的营地插画，简模探险家在广场走动，点击后才显示随机台词。功能入口通过 MainHUD.* 事件接入。保留网络状态和重连绑定，无主题切换按钮。",
   "canvas": {
     "canvasScaler": {
       "referenceResolution": [
@@ -110,6 +110,94 @@
         }
       ]
     },
+    {
+      "name": "ExplorerStage",
+      "parent": "UI_MainHUD",
+      "active": true,
+      "rect": {
+        "anchorMin": [0.12, 0.34],
+        "anchorMax": [0.88, 0.7],
+        "offsetMin": [0, 0],
+        "offsetMax": [0, 0]
+      },
+      "components": [
+        {
+          "type": "MonoBehaviour",
+          "typeName": "HotUpdate.UI.HomeExplorerPresenter"
+        }
+      ]
+    },
+    {
+      "name": "Btn_Explorer",
+      "parent": "UI_MainHUD",
+      "active": true,
+      "rect": {
+        "anchorMin": [0.5, 0.5],
+        "anchorMax": [0.5, 0.5],
+        "pivot": [0.5, 0.5],
+        "anchoredPosition": [0, -80],
+        "sizeDelta": [220, 280]
+      },
+      "components": [
+        {
+          "type": "Image",
+          "sprite": "ui_panel_content",
+          "color": "#FFFFFF00",
+          "raycastTarget": true,
+          "imageType": "Sliced"
+        },
+        {
+          "type": "Button",
+          "transition": "ColorTint",
+          "normalColor": "#FFFFFF",
+          "highlightedColor": "#FFFFFF",
+          "pressedColor": "#F2FAFF",
+          "disabledColor": "#FFFFFF"
+        }
+      ]
+    },
+    {
+      "name": "Panel_ExplorerTalk",
+      "parent": "UI_MainHUD",
+      "active": false,
+      "rect": {
+        "anchorMin": [0.5, 0.5],
+        "anchorMax": [0.5, 0.5],
+        "pivot": [0.5, 0],
+        "anchoredPosition": [0, 80],
+        "sizeDelta": [520, 150]
+      },
+      "components": [
+        {
+          "type": "Image",
+          "sprite": "ui_panel_content",
+          "color": "#FFF8EE",
+          "raycastTarget": false,
+          "imageType": "Sliced"
+        }
+      ]
+    },
+    {
+      "name": "Txt_ExplorerTalk",
+      "parent": "Panel_ExplorerTalk",
+      "active": true,
+      "rect": {
+        "anchorMin": [0, 0],
+        "anchorMax": [1, 1],
+        "offsetMin": [28, 20],
+        "offsetMax": [-28, -20]
+      },
+      "components": [
+        {
+          "type": "TextMeshProUGUI",
+          "text": "",
+          "fontSize": 32,
+          "color": "#5A4632",
+          "alignment": "Center",
+          "raycastTarget": false
+        }
+      ]
+    },
     {
       "name": "Layout_Top",
       "parent": "UI_MainHUD",
@@ -1992,7 +2080,7 @@
     {
       "name": "Panel_Greeting",
       "parent": "Layout_Sides",
-      "active": true,
+      "active": false,
       "rect": {
         "anchorMin": [
           0,
@@ -3338,7 +3426,11 @@
     "Btn_NavPets",
     "Btn_NavHome",
     "Btn_NavBattle",
-    "Btn_NavPinball"
+    "Btn_NavPinball",
+    "ExplorerStage",
+    "Btn_Explorer",
+    "Panel_ExplorerTalk",
+    "Txt_ExplorerTalk"
   ],
   "events": [
     {