feat: auto-refresh when jj operations complete#194
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Add file system watching to automatically refresh the UI when external jj operations modify the repository. This enables real-time updates when working with multiple terminals or when LLMs make changes. Implementation: - Watch .jj/repo/op_heads/heads (only changes when jj ops complete) - Use notify crate for cross-platform file watching - Debounce rapid events (250ms) for LLM workflows - Use --ignore-working-copy during refresh to avoid conflicts - Disable watcher during our own operations This addresses the use case of monitoring jj repos while AI assistants or other tools make changes in separate terminals. Closes Cretezy#130 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
.jj/repo/op_heads/headsinstead of.jj/working_copy)Implementation
event.rsmodule withEventSourcethat combines user input and file watchingnotifycrate for cross-platform file watching--ignore-working-copyflag during refresh to avoid conflicts with external operationsRelated
Test plan
cargo buildsucceedscargo testpasses (24/25 tests - 1 pre-existing failure on main)jj newin another terminal, verify UI refreshesGenerated with Claude Code