Add changelog for v0.2.2 (#1060)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: github-actions[bot]

CHANGELOG.md

@@ -5,6 +5,27 @@ All notable changes to the Copilot SDK are documented in this file.
 This changelog is automatically generated by an AI agent when stable releases are published.
 See [GitHub Releases](https://github.com/github/copilot-sdk/releases) for the full list.
 
+## [v0.2.2](https://github.com/github/copilot-sdk/releases/tag/v0.2.2) (2026-04-10)
+
+### Feature: `enableConfigDiscovery` for automatic MCP and skill config loading
+
+Set `enableConfigDiscovery: true` when creating a session to let the runtime automatically discover MCP server configurations (`.mcp.json`, `.vscode/mcp.json`) and skill directories from the working directory. Discovered settings are merged with any explicitly provided values; explicit values take precedence on name collision. ([#1044](https://github.com/github/copilot-sdk/pull/1044))
+
+```ts
+const session = await client.createSession({
+  enableConfigDiscovery: true,
+});
+```
+
+```cs
+var session = await client.CreateSessionAsync(new SessionConfig {
+    EnableConfigDiscovery = true,
+});
+```
+
+- Python: `await client.create_session(enable_config_discovery=True)`
+- Go: `client.CreateSession(ctx, &copilot.SessionConfig{EnableConfigDiscovery: ptr(true)})`
+
 ## [v0.2.1](https://github.com/github/copilot-sdk/releases/tag/v0.2.1) (2026-04-03)
 
 ### Feature: commands and UI elicitation across all four SDKs