Release v0.2.0 archive and space API update

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

@@ -24,6 +24,32 @@ Sync package content from the Unity source project with:
 - Player space
 - Default blocking error UI
 
+## Archive checksum
+
+Archive upload checksum is handled by the SDK by default.
+
+- For quick use, the archive module now provides:
+  - `UploadAsync(slotNo, bytes)` for binary
+  - `UploadTextAsync(slotNo, text)` for UTF-8 text
+  - `UploadJsonAsync(slotNo, payload)` for JSON objects
+  - `DownloadAsync(slotNo)` for raw bytes + metadata
+  - `DownloadTextAsync(slotNo)` for UTF-8 text
+  - `DownloadJsonAsync(slotNo)` for JSON payloads
+- The SDK computes SHA256 automatically when uploading archive bytes
+- The current Brisk archive API expects a plain lowercase SHA256 hex string
+- Do not send values with a `sha256:` prefix
+- If a manual checksum includes that prefix, the SDK will normalize it before sending
+
+## Space content
+
+Player space now follows a metadata + binary content model.
+
+- `GetByPlayerIdAsync(...)` and `GetByLoginIdentityAsync(...)` return metadata only
+- `DownloadContentByPlayerIdAsync(...)` and `DownloadContentByLoginIdentityAsync(...)` return raw bytes
+- `UpdateMyAsync(string)` uploads text content directly
+- `UpdateMyAsync(byte[])` uploads binary content directly
+- `UpdateMyAsync(object)` serializes the object as JSON automatically
+
 ## Package layout
 
 - `Runtime`