Release v0.2.0 archive and space API update

PackageSource/com.foldcc.cc-framework.BriskGameServer/Documentation~/QuickStart.md

@@ -27,6 +27,52 @@ var top = await Brisk.Leaderboard.GetTopAsync("season-score", 20);
 await Brisk.Leaderboard.SubmitScoreAsync("season-score", 128);
 ```
 
+## Archive upload
+
+```csharp
+await Brisk.Archive.UploadTextAsync(1, "{\"save\":1}");
+await Brisk.Archive.UploadJsonAsync(2, new
+{
+    save = 1,
+    coins = 128
+});
+
+var text = await Brisk.Archive.DownloadTextAsync(1);
+var json = await Brisk.Archive.DownloadJsonAsync(2);
+```
+
+Notes:
+
+- if you already have binary data, keep using `Brisk.Archive.UploadAsync(slotNo, bytes)`
+- if you need version and checksum, keep using `Brisk.Archive.DownloadAsync(slotNo)`
+- `checksum` is optional in normal use
+- the SDK computes SHA256 for you automatically
+- if you pass a manual checksum, use plain SHA256 hex
+- values like `sha256:abcd...` will be normalized by the SDK before upload
+
+## Space content
+
+```csharp
+await Brisk.Space.UpdateMyAsync("Hello Brisk Space");
+
+await Brisk.Space.UpdateMyAsync(new
+{
+    mood = "ready",
+    title = "hello"
+});
+
+var mySpace = await Brisk.Space.GetByPlayerIdAsync(Brisk.PlayerId);
+var myContent = await Brisk.Space.DownloadContentByPlayerIdAsync(Brisk.PlayerId);
+var text = Encoding.UTF8.GetString(myContent.Bytes);
+```
+
+Notes:
+
+- space metadata and space content are now separated
+- `GetByPlayerIdAsync(...)` returns metadata only
+- use `DownloadContentByPlayerIdAsync(...)` to read the actual content bytes
+- `UpdateMyAsync(...)` automatically picks text / binary / json behavior from the payload type
+
 ## Sample
 
 For the current source project, open directly: