feat(kimi-code): two-line collapsed tool cards with width-aware headers - #3539
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Collapsed cards now show the call on line one and a single dim outcome row on line two: a Bash command's last output line (the live tail while running) with a line-count chip, a Grep/Glob path sample, or a generic tool's first output line. Read groups stay header-only and honor the global expand state; failed calls keep their preview. Headers split into head / flexible / tail segments so a long command fills the terminal width before the chip.
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Collapsed cards now show up to three output lines before falling back to a single outcome row, the Grep chip counts files or matches according to output_mode, and the tools' pagination and empty-result notices no longer count as results. While the recent turns hold tool output that ctrl+o would reveal or hide, the footer shows ctrl+o expand or ctrl+o collapse.
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A collapsed Bash card's chip now counts the hidden lines (`N more lines`), its last-line outcome row carries a leading ellipsis, a generic tool's first-line row a trailing one, and the Grep glance keeps its "+N more" count in the fixed tail so width cuts drop samples, never the count. Background Bash results identify the task by their first metadata line instead of trailing internal hints, and header truncation now treats ANSI escapes as atomic zero-width units and stays bounded by the terminal width for huge arguments.
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Glob's timeout, truncation, and warning lines no longer inflate the file count or pose as glance samples, and unnumbered Grep content with context flags falls back to an exact file count instead of claiming matches it cannot distinguish. The footer's ctrl+o hint now also appears when an outcome row is cut by the terminal width — one to three very long lines hide the remainder that ctrl+o reveals wrapped.
The Edit check now uses the same clustered diff render as the preview (context rows and inter-hunk separators count toward the cap), and an ExitPlanMode outcome card no longer reports hidden content — the plan is fully rendered by the call preview and its result body is expansion-independent. OUTCOME_MAX_LINES moves to the TUI constant directory with the other shared rendering limits.
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Outcome rows drop terminal control sequences before they are cut, a failed Bash card leaves the hidden-line count to its preview trailer, an unnumbered Grep glance lists each file once, a solo subagent card never reports hidden content, and the glance sample cap joins the other collapsed-card limits in the rendering constants.
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…s as hidden The Grep chip and glance use the tool's count-mode summary and pagination total instead of the current page, Windows drive letters stay inside unnumbered content paths, Glob's ripgrep stderr continuation lines no longer count as files, a background question follows the line-count rule, and an error preview whose long line wraps past its row cap keeps the footer's ctrl+o hint on.
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An oversized result reaches the TUI as agent-core's truncation envelope; cards now render its first line as the outcome row and carry no chip instead of counting its metadata as files or lines. The Grep chip keeps the count-mode totals on an empty page, and the Bash chip counts rows the way the outcome rows do, so whitespace-only rows never claim hidden lines.
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…d ! cards A paginated content search reports the tool's match total, a capped Edit or Write preview counts as hidden even when the call failed, and a user-run ! command card tells the footer about its running tail or capped result.
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…ut-off cards Grep and Glob counts read as lower bounds (`12+ files`) when the tool reports a timeout or output cap, a header too narrow for its fixed parts drops the middle and cuts the head before the chip, and a call whose arguments were cut off by max_tokens no longer claims hidden content.
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…d paginated context A pagination total only stands in for the match count when no context flag is set, a ! command card that finished while expanded still counts its rows past the preview cap, parsed goal snapshots and bodiless goal updates report nothing to expand, header fitting measures graphemes instead of trusting code-unit length, and the escape pattern and tail window join the rendering constants.
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…ap exactly A Grep call with -A/-B/-C set to zero produces no context rows, so its matches stay countable; the Edit hidden-content check now renders the preview capped and uncapped and compares them, so a body that fills the cap exactly no longer counts as cut.
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… window Toggling ctrl+o off collapses every expanded card, including one that slid before the three-turn cutoff since it was expanded, so the footer now keeps offering collapse while any expanded card hides content. Grep context detection follows the backend's -C precedence, where a defined -C makes -A and -B moot.
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…ates Their one-line success acknowledgements repeat what the header, chip and preview already show, so they render in neither state; any other successful output shows as an outcome row in both. The footer's expand hint therefore depends only on the capped preview for these cards.
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The finished header is three segments — label, line count, `· N failed` tail — so a narrow row drops the line count before the failure count, which is the only sign of partial failure while the per-file body is collapsed.
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…a status command A Grep or Glob the tool cut short before any row renders its notice instead of an exact-looking empty result and carries no chip, a ReadMediaFile result that is not a media envelope follows the line-count rule, and the footer's ctrl+o hint moves to line 2 when a status_line.command owns line 1.
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…d stop hinting on notice-only searches A Glob that skipped unreadable directories reports its file count as a lower bound, and a search cut short before any row — which renders only the tool's notice, the same way in both states — no longer makes the footer offer ctrl+o.
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…parsed WaitFor results as hidden An inline tips slot gives way when the fixed hint would not fit beside it, and a parsed WaitFor result — whose raw fields only render when expanded — reports hidden content instead of falling to the line-count rule.
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… counts and honor streaming previews The per-line truncation pointer agent-core appends to an oversized result stays out of line and file counts, byte sizes and outcome rows; a search whose only matches were filtered as sensitive files shows the tool's notice instead of an exact-looking empty result; and while arguments still stream, only a Bash card (whose partial command appears once expanded) reports hidden content.
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| // Without context flags every paginated row is a match, so the tool's | ||
| // total is the exact match count; the files beyond the page stay unknown. | ||
| const paginatedTotal = hasContext ? undefined : PAGINATION_TOTAL.exec(output)?.[1]; |
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When numbered content mode combines context rows with pagination, clearing paginatedTotal correctly avoids treating the backend's total row count as a match count, but it also leaves partial and filesPartial false. A page containing one match plus context can therefore render the exact-looking 1 match in 1 file even though the pagination notice proves later rows—and potentially additional matches and files—exist. Fresh evidence beyond the earlier context-total issue is that this final branch now discards the pagination signal entirely; retain it as a lower-bound/unknown-total state without promoting the row total to matches.
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| // More physical lines than the collapsed cap is hidden for certain, even | ||
| // for a card that finished while already expanded; a wrapped overflow | ||
| // shows up once a collapsed render has recorded it. | ||
| return ( | ||
| this.finalOutput.split('\n').length > SHELL_OUTPUT_PREVIEW_LINES || |
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When toolOutputExpanded is already true and a finished ! command has a single long line that wraps beyond the ten-row preview cap, this physical-line count is only one and the expanded TruncatedOutputComponent never records wasTruncated(). The footer consequently omits ctrl+o collapse even though pressing Ctrl+O rebuilds the collapsed component and hides the wrapped rows. Fresh evidence beyond the earlier initially-expanded report is that the fallback added here counts newline-delimited lines rather than the visual rows the preview actually caps.
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Related Issue
No linked issue; internal UX change, the problem is described below.
Problem
Finished tool calls dominate the transcript, and their collapsed bodies (three output lines, command previews, glance lines) are rarely what the user reads. Long Bash headers also wrap to several rows because the header was built as one string and cut only by the terminal. Scanning a turn, the user wants two things per call: what ran, and what came of it. And when output is collapsed, the user should be able to tell that something is hidden and how to reveal it.
What changed
Two-line collapsed cards. Line one identifies the call; below it, dim width-truncated outcome rows state what came of the call. Output of three lines or fewer is shown whole; longer output contributes one telling line and the rest waits for
Ctrl+O. Cards may grow between streaming, running and done, but never shrink.$ <command>; the outcome row is the command's last output line (marked with a leading…when earlier lines are hidden), or the newest live line while it runs, and a· N more lineschip counts what is hidden. A failed command keeps its three-line preview and its own… (N more lines, ctrl+o to expand)trailer, so it carries no chip.Ctrl+Oshows the full command and output., +N morecount in the fixed tail so a width cut drops samples, never the count; unnumbered Grep content lists each file once (a Windows drive letter stays part of the path), and a paginated result counts the tool-reported totals rather than the current page (a paginated content search reports its match total and leaves the file count out, since only the page's files are known); when the tool reports an incomplete set (timeout, output cap), every count reads as a lower bound (12+ files), and a search that only has a notice to show — cut short before any row, or every match filtered as a sensitive file — shows that notice instead of an exact-looking empty result. The raw output appears afterCtrl+O. The Grep chip readsN files,N matches across K files, or the summed count according tooutput_mode, and the tools' pagination and empty-result notices no longer count as results.…when more follows. Outcome rows drop terminal colour sequences, so a colour left open past the width cut cannot bleed into the row's ellipsis or tail. An oversized result arrives as agent-core's truncation envelope; cards render its first line ("Tool output exceeded … saved to a file") as the outcome row and carry no chip, instead of counting the envelope's metadata as results, and the per-line truncation pointer appended to a result that kept its shape stays out of counts and outcome rows.Ctrl+O; a group created while the global expand toggle is on starts expanded, and its· N failedcount is a fixed header tail that survives a narrow row.Replaced N occurrences in …,Wrote N bytes to …) no longer render in either state since the header and preview already say it; any other successful output shows as an outcome row in both states.Width-aware headers.
TruncatedHeaderLinerenders a header as head / flexible / tail segments: the flexible part (a command, a path) is cut with an ellipsis to whatever width remains after the fixed parts, keeping the head of a command and the tail of a path, so a long command fills a wide terminal and the chip survives on a narrow one; when the row is too narrow even for the fixed parts, the middle is dropped first and the head is cut before the chip. The rendered array is cached while content and width are unchanged, so an unchanged header costs nothing per frame.Footer
ctrl+ohint. While the recent turns hold tool output thatCtrl+Owould reveal, the footer's first line shows a fixedctrl+o expandhint (it wins over the rotating tip when space runs out); once expanded it readsctrl+o collapse, and it disappears when there is nothing to toggle. Width-dependent hiding counts too: an outcome row cut to the terminal width, or an error preview whose long line wraps past its row cap, keeps the hint on. A capped Edit or Write preview counts even when the call failed, and a user-run!command card reports its running tail or capped result the same way. The hint lives in the footer because it knows the expand toggle and the turn window, so it is never shown for cardsCtrl+Ocan no longer reach. When astatus_line.commandowns line 1, the hint moves to the left of line 2 (transient and warning hints still take precedence there).Docs and changesets. One
patchchangeset; no doc update needed,Ctrl+Obehaves as documented.Tests. Renderer tests for the outcome rows per tool family, the Grep output parsing per mode, the Bash chip, the Read group, and the header segments (wide and narrow, path tail, cache identity); card tests for the collapsed and live states and for
hasHiddenContent; footer tests for the hint; an end-to-end test drives a Bash result through the event handler and watches the footer offerctrl+o expandthenctrl+o collapse; the activity viewer test follows the collapsed rule. The CLI app suite, typecheck and lint pass.The
NotifyUserupdate panel (#3524) is stacked on this branch.Checklist
/approve). Internal change, no issue.gen-changesetsskill, or this PR needs no changeset.gen-docsskill, or this PR needs no doc update.