docs: update changelog for v0.1.74

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: github-actions[bot]

CHANGELOG.md

@@ -1,5 +1,30 @@
 # Changelog
 
+## 0.1.74
+
+### New Features
+
+- **Hook event streaming**: Added `include_hook_events` option to `ClaudeAgentOptions`. When set, hook events (PreToolUse, PostToolUse, Stop, etc.) are emitted by the CLI and yielded from the message stream as `HookEventMessage`, matching the TypeScript SDK's `includeHookEvents` (#917)
+- **Defer hook decision**: Added support for the `"defer"` hook decision in `PreToolUseHookSpecificOutput.permissionDecision` and new `DeferredToolUse` dataclass on `ResultMessage.deferred_tool_use`, bringing parity with the TypeScript SDK's deferred tool use round trip (#865)
+- **Strict MCP config**: Added `strict_mcp_config` option to `ClaudeAgentOptions`. When `True`, the CLI only uses MCP servers passed via `mcp_servers`, ignoring project, user, and global MCP configurations for fully deterministic server sets (#915)
+- **Permission context enrichment**: Added `decision_reason`, `blocked_path`, `title`, `display_name`, and `description` fields to `ToolPermissionContext`, enabling richer permission prompts in `can_use_tool` callbacks (#909)
+- **`updatedToolOutput` for post-tool hooks**: Added `updatedToolOutput` to `PostToolUseHookSpecificOutput` for replacing any tool's output before it reaches the model, not just MCP tools (#911)
+- **`xhigh` effort level**: Added `"xhigh"` to the `effort` Literal on `ClaudeAgentOptions` and `AgentDefinition`, an Opus 4.7-specific level that falls back to `high` on other models (#914)
+- **Subprocess cleanup on parent exit**: Registered an atexit handler to terminate live CLI subprocesses when the parent process exits, preventing orphaned `claude` processes from leaking (#916)
+
+### Bug Fixes
+
+- **ResourceWarning on disconnect**: Fixed `ResourceWarning: Unclosed <MemoryObjectReceiveStream>` emitted on `ClaudeSDKClient` disconnect and `query()` cleanup by closing the receive stream at the consumer boundary (#908)
+- **Session `created_at` timestamp**: Fixed `list_sessions()` returning `created_at=None` for sessions whose first JSONL record lacks a `timestamp` field by scanning the full head buffer instead of only the first line (#907)
+
+### Documentation
+
+- Clarified that `can_use_tool` fires only on `"ask"` permission decisions, not on `"allow"` or `"deny"` (#912)
+
+### Internal/Other Changes
+
+- Updated bundled Claude CLI to version 2.1.129
+
 ## 0.1.73
 
 ### New Features