Add Claude Sessions Viewer block with GUI interface

[kcisoul]

Summary

Add a new block view type (claudesessions) that displays Claude Code sessions in a rich GUI interface, similar to the Claude app's conversation list. Currently, Claude Code interaction in Wave is TUI-only — this provides a visual dashboard for browsing and resuming sessions.

Use Cases

• Browse recent Claude Code sessions across all projects at a glance
• Quickly resume a previous Claude session by clicking on it
• Monitor active sessions in real-time
• Navigate sessions via keyboard (arrow keys) or mouse

Proposed Implementation

Backend (Go)

• Add ClaudeSessionInfo type and ClaudeSessionsListCommand RPC to read and parse ~/.claude/history.jsonl and ~/.claude/sessions/*.json
• Aggregate session data: project name, message count, timestamps, first message preview
• Return up to 50 most recent sessions sorted by last activity

Frontend (React + Jotai)

• New view type claudesessions with ViewModel + component
• List view with sessions grouped by date (Today, Yesterday, Last 7 Days, Older)
• Each item shows: project name, first message preview, relative timestamp, message count
• Full keyboard navigation (arrow keys, Enter to open, Escape to clear search)
• Mouse click to open/resume a session in a new terminal block
• Search/filter functionality
• Periodic polling (5s interval) to observe ~/.claude/ directory for real-time updates

Registration

• Register in BlockRegistry
• Add default widget entry in widgets.json

Design

• Claude-branded styling with purple accent
• Conversation list layout similar to Claude app
• Active sessions indicated with a green dot
• Responsive layout that adapts to block size

[kcisoul]

Closing — issue was created on the wrong repository by mistake.