Code Review (git diff)

The Code Review surface is how ainb shows a session’s git changes. Press g on a session to open it, or run ainb diff-review [path] to review any repository directly — no session required. It replaces the old line-prefixed diff with a cohesive review surface: a left hierarchical file tree (folders, chevrons, nested files) plus per-file collapsible diff blocks in one continuous scroll, full Dracula syntax highlighting, word-level intra-line emphasis (the exact changed substring glows brighter inside the muted row tint), a line-number gutter with solid green/red change bars, expandable context, and hunk navigation. It is fully mouse-driven too.

ainb Code Review surface — file sidebar, per-file diff blocks, syntax highlighting, green/red row tints, word-level emphasis, and a line-number gutter

Press g on a session (or ainb diff-review .) to open the review. The sidebar lists every changed file with its +N -M counts; the body shows all files’ diffs in one scroll with Dracula syntax colours, green/red row tints, and a Hunk x/y counter.

Keys

Key	Action
`g`	Open the Code Review surface for the selected session
`↑` / `↓`	Move the selection across the file tree (landing on a file scrolls the body to it)
`j` / `k`	Scroll the diff body
`n` / `N`	Jump to the next / previous hunk (with a `Hunk x/y` counter)
`Space` / `Enter`	Toggle a folder, or collapse/expand the selected file’s diff block
`e` / `E`	Expand / collapse all folders
`z`	Reveal more hidden context at the nearest gap
`[` / `]`	Select the previous / next file
Mouse	Wheel scrolls the diff; click a tree row to select a file or toggle a folder
`Tab`	Cycle Review → Commits → Markdown
`Esc` / `q`	Back

Word-level emphasis

When a line changes, the whole row gets a muted green (added) or red (removed) tint — and the exact substring that changed gets a brighter highlight. In the import line below, only LockedSource, is brighter; the rest of the row carries the flat tint. This makes the real edit jump out even on lines that are otherwise nearly identical.

Collapse & expand context

Each file’s diff block can be collapsed to just its header (Space/Enter), and the surrounding unchanged lines are hidden behind a ↕ expand N lines affordance — press z to reveal more. Large diffs stay readable because only the changed regions (plus a little context) are shown by default.

n / N jump between hunks across all files, scrolling each to the top and advancing the Hunk x/y counter in the title.

Jumping between hunks with n / N — the Hunk x/y counter advances

`ainb diff-review`

The same surface is available as a standalone command:

ainb diff-review            # review the current repo's open changes
ainb diff-review ./path     # review another repo

This opens the Code Review surface directly for a repository’s uncommitted changes (HEAD vs working tree, including untracked and deleted files) with the same keys. q or Esc exits back to the shell.

How it works

ainb enumerates changed files with git2 (HEAD blob vs working-tree file, untracked and deleted handled), then re-diffs each file with the similar crate to produce structured hunks and word-level inline changes in one pass. Code is highlighted with syntect using the extended grammars and Dracula theme from two-face; the syntect foreground is composited over the diff-tint background so a line keeps its syntax colours while gaining a green/red row tint, with a brighter tint over the word-emphasis ranges. The surface renders only the visible window of a flattened row list, so even large diffs stay responsive.