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feat(tui): markdown preview panel - #43599
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/preview opens a fuzzy file picker and renders the selected file as rendered markdown in a side panel next to the session: inline split on wide terminals, right-docked overlay on narrow ones, matching the sidebar layout pattern. Token-/command-configurable keybinds preview_toggle and preview_close default to unbound.
Enough1122
commented
Aug 22, 2026
The inline vs overlay dual-mode layout and the contentWidth accounting look correct, including the wide() transition path. — AI code review (automated) |
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Issue for this PR
Closes#43598
Type of change
What does this PR do?
Adds
/previewto the session view. It opens the fuzzy file picker (samefs.findsearch as@-mentions) and renders the selected file as markdown in a panel to the right of the session: an inline split pane on wide terminals and a right-docked overlay on narrow ones, mirroring the sidebar layout. Running/previewagain closes it. New keybind tokenspreview_toggle/preview_closedefault to unbound.The panel reuses the built-in
<markdown>renderable withstreaming={false}, so content renders exactly like assistant messages (headings, code blocks, grid tables). Related web/desktop request: #38047 — TUI has no file preview today.How did you verify your code works?
bun testinpackages/tui: addstest/cli/tui/markdown-preview.test.tsx(rendered file content + unreadable-file state). Full suite: 194 pass; the 1 failure (runtime.test.tsxexpects~/projectbut gets~\project) is a pre-existing Windows path-separator issue that also fails on an unmodified checkout.packages/tuitypecheck passes (tsgo --noEmit). oxlint + prettier clean on touched files.testRendermount: frame below.Screenshots / recordings
Headless testRender capture (side-by-side, dark theme):
``
鈼?session "shipping rules analysis" CHANGELOG.md
user: # Changelog
what shipped to Shanghai last week? ## 1.2.0
assistant: - add
/previewpanel for rendered markdown- sidebar-respecting split layout
Found 1,284 orders across 3 hubs. Details in the table on the right 鈥?
SELECT city, count(*) AS cnt
鈻峚sk anything鈥? FROM orders
GROUP BY 1 ORDER BY 2 DESC;
``
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