docs: update changelog for v0.26.0

Author: augmentmoogi

CHANGELOG.md

@@ -1,5 +1,22 @@
 # Changelog
 
+### 0.26.0
+
+#### New Features
+- **PDF Attachments**: Added support for attaching PDF files to conversations.
+- **Expert Auto-Archive**: Expert YAML bundles now support an auto-archive setting for automatic session cleanup.
+- **Raw Codebase Retrieval**: New raw codebase retrieval tool for direct access to indexed code results.
+
+#### Improvements
+- **Daemon Version Display**: Daemon list and session details now show the CLI version running on each daemon.
+- **Better Entitlement Errors**: Improved error messages when daemon entitlement checks fail.
+- **Non-Interactive Mode Errors**: Permission errors are now surfaced earlier when running feature-gated commands in non-interactive mode.
+- **Removed Deprecated Commands**: Removed the deprecated Slack channel `claim` and `release` commands.
+
+#### Bug Fixes
+- Fixed cloud session sync failing when targeting a specific agent by ID.
+- Fixed Git PR and branch sync for worktree-based sessions.
+
 ### 0.25.1
 
 #### New Features