Add hot-update boot pipeline, UI bundles/atlas assets, and design docs.

Ignore AIClient/Library and AIClient/HybridCLRData permanently; include HybridCLR/YooAsset project setup and UI tooling.

Co-authored-by: Cursor <cursoragent@cursor.com>

AIClient/Assets/BundleCollectorSetting.asset

@@ -0,0 +1,40 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 185f6993d5150494d98da50e26cb1c25, type: 3}
+  m_Name: BundleCollectorSetting
+  m_EditorClassIdentifier: 
+  ShowPackageView: 1
+  ShowEditorAlias: 0
+  UniqueBundleName: 0
+  Packages:
+  - PackageName: DefaultPackage
+    PackageDesc: "\u542F\u52A8\u5FC5\u9700\uFF1A\u70ED\u66F4 DLL \u7B49"
+    EnableAddressable: 1
+    SupportExtensionless: 1
+    LocationToLower: 0
+    IncludeAssetGUID: 0
+    AutoCollectShaders: 0
+    IgnoreRuleName: RawFileIgnoreRule
+    Groups:
+    - GroupName: HotUpdateDll
+      GroupDesc: "HybridCLR \u70ED\u66F4\u7A0B\u5E8F\u96C6"
+      AssetTags: aot
+      ActiveRuleName: EnableGroup
+      Collectors:
+      - CollectPath: Assets/Bundles/Raw
+        CollectorGUID: 20211010dded8944482389a14aef5c9a
+        CollectorType: 0
+        AddressRuleName: AddressByFileName
+        PackRuleName: PackRawFile
+        FilterRuleName: CollectAll
+        AssetTags: aot
+        UserData: