[Feature Request] Session diff summary view in WebStorm integration

Problem Statement:
When using Claude Code in auto-accept mode with WebStorm integration, there's no way to get a consolidated view of all changes made during a session. Users can either:

See individual diffs in real-time (manual approval mode) - slow
Use auto-accept mode for speed - but miss seeing what changed

Requested Feature:
Add a session summary command that displays all changes made during the current Claude Code session in WebStorm's native diff viewer.
Proposed Implementation:

New command: /session-diff or /session-summary --diff
When executed, opens WebStorm's diff viewer showing all files modified during the current session
Could leverage existing IDE integration to display consolidated changes
Alternative: Add this as an automatic option when ending a session

Use Case:

Developer runs Claude Code in auto-accept mode for speed
Claude makes changes across multiple files
At session end, developer runs /session-diff
WebStorm opens showing all session changes in native diff viewer
Developer can review all changes at once, then drill down into specific files

Why This Matters:
Auto-accept mode is great for productivity, but developers still need to review what changed. Current workflow requires manually checking each file or using git (not always desired). This feature would provide the "big picture" view while maintaining the speed benefits of auto-accept mode.
Environment:

WebStorm with Claude Code plugin
Auto-accept mode enabled
Multiple files modified in single session