TUI: syntax-highlighted diff view for write/edit tool output#455
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TUI: syntax-highlighted diff view for write/edit tool output#455
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Add diff rendering to TUI chat panel for write and edit tool results. FileExecutor captures old content before modifications, propagates DiffData through agent events to TUI where it renders with green/red backgrounds for added/removed lines, word-level change highlighting, and syntax coloring via tree-sitter. Compact/expanded toggle reuses existing 'e' key binding. Closes #451
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Summary
DiffDataonToolOutputwidgets/diff.rsrenders with diff-colored backgroundsekey bindingChanges
crates/zeph-core/src/diff.rs—DiffDatastruct for cross-crate sharingcrates/zeph-tui/src/widgets/diff.rs— diff computation (similarcrate) + renderingcrates/zeph-tools/src/file.rs— capture old content before write/editcrates/zeph-tui/src/widgets/chat.rs— integrate diff rendering in tool messagesDependencies
similar2.7.0 — pure Rust line/word diff (MIT, no unsafe, no transitive deps)Follow-up issues
Test plan
cargo build --features tuicargo clippy --workspace -- -D warningscargo +nightly fmt --checkcargo nextest run --workspace --lib --bins(1563 tests pass)cargo run -- --tui, trigger write/edit tool, verify diff renderingCloses #451