Initial Brisk Unity SDK project

PackageSource/com.foldcc.cc-framework.BriskGameServer/README.md

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+# FoldCC Brisk Game Server SDK
+
+This directory is the package publishing skeleton for Brisk.
+
+The active Unity project source currently lives under:
+
+- `Assets/BriskSdk/Runtime`
+- `Assets/BriskSdk/Samples/QuickStart`
+- `Assets/Scenes/BriskQuickStartScene.unity`
+
+## Included runtime modules
+
+- Bootstrap and initialization
+- Auth and session restore
+- Player profile
+- Dynamic config
+- Announcements
+- Leaderboard
+- Archive upload and download
+- Player space
+- Default blocking error UI
+
+## Package layout
+
+- `Runtime`
+- `Samples~`
+- `Documentation~`
+
+## Quick start
+
+See:
+
+- `Documentation~/QuickStart.md`
+- `Samples~/QuickStart`
+
+This sample uses an IMGUI test panel for end-to-end SDK flow verification.
+
+When preparing a publish branch, place the package-ready runtime, samples, and docs into this package directory and tag that branch for external consumption.