fix(web): show tool call output instead of the duplicated command

[myNameArnav]

Problem

Expanding a tool call in the work log showed the same information twice. Providers mirror the command into more than one payload field:

• Grok/Cursor (ACP) set detail equal to data.command (deriveToolActivityPresentation returns detail: command for command executions).
• OpenCode fills both command and detail with the tool's output.
• Codex repeats the raw wrapped command in both rawCommand and detail.
• Claude mirrors the command into detail as Bash: <command>.

buildToolCallExpandedBody joined command/rawCommand and detail as separate blocks with no dedupe, so the same text rendered twice — and the real output never showed for Grok.

Fix

• Show the output: command tools whose detail is just the command now prefer the actual output summary (rawOutput) instead — web extractToolDetail and the mobile threadActivity mirror.
• Dedupe the renderer: buildToolCallExpandedBody drops exact duplicate blocks, covering the Codex raw-vs-detail case and file paths that repeat detail.
• The header preview ("Ran command - git status") is unchanged; the expanded body now reads git status + one line of output.

Same fix path covers every harness (Grok, Cursor, OpenCode, Codex, Claude); mobile rendered detail only once and now gets the output summary too.

Before / After

Expanded git status tool call, same thread:

Before	After

Before: git status twice. After: git status once plus the actual output (On branch applib/fix-tool-output).

Worked with OpenCode on macOS.

---

Note

Low Risk
Presentation-only changes to work-log derivation and expanded tool bodies; no auth, persistence, or execution paths touched.

Overview
Fixes expanded work-log tool rows that repeated the same command text and hid real output when providers mirror the command into detail (ACP/Grok, Claude) or duplicate it across command/rawCommand/detail (OpenCode, Codex).

Web and mobile derivation now treat command executions whose detail equals the command as a mirror and set detail from a short stdout/stderr/content summary via summarizeToolRawOutput (stderr-only results included). Mobile also keys tool lifecycle collapse on toolCallId so in-progress and completed rows still merge after detail becomes an output summary.

Web expanded body uses dedupeToolCallExpandedBodyBlocks before joining blocks so identical command/raw/detail strings render once. Server activity payload projection applies the same stderr summarization when slimming rawOutput for clients.

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Note

Fix tool call rows to show output summary instead of duplicating the command

• When a tool call's detail field mirrors the command string, extractToolDetail in session-logic.ts now returns a concise output summary (stdout, stderr, or file count) instead of repeating the command.
• New summarizeToolRawOutput and summarizeToolTextOutput helpers produce short summaries from raw output, including stderr-only results.
• Tool call rows with the same toolCallId now collapse together via deriveToolLifecycleCollapseKey, even when detail differs between in-progress and completed states.
• dedupeToolCallExpandedBodyBlocks in MessagesTimeline.logic.ts strips duplicate blocks from expanded tool call bodies before rendering.
• Behavioral Change: Detail text for command-execution rows will change from repeating the command to showing output summaries where available.

^{Macroscope summarized 537ba6f.}

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[macroscopeapp]

Approvability

Verdict: Approved 660c416

This is a focused UI bug fix that prevents duplicate command text from appearing in tool call displays. The changes are limited to presentation logic with comprehensive test coverage, and don't affect data processing or storage.

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[myNameArnav]

Seems like #6498 and this PR fix the same issue.

Dismissing prior approval to re-evaluate 660c416

[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit 537ba6f. Configure here.}

[cursor]

OpenCode rows collapse together

Medium Severity

When a command tool’s detail mirrors the command and there is no output summary, detail is now cleared. The fallback collapse key still keys on detail, so providers without toolCallId (OpenCode in the new tests) share [itemType, label, ""]. Adjacent distinct tool.updated rows with the same title incorrectly merge into one row.

Additional Locations (2)

• apps/mobile/src/lib/threadActivity.ts#L411-L419
• apps/web/src/session-logic.ts#L1085-L1095

 

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[myNameArnav]

Closing: superseded by #4083, merged to main (143f713). This branch's feature (show command output instead of duplicated command in work rows) landed there with a different implementation.

Note: the collapse regression Bugbot flagged here (adjacent distinct tool rows without a toolCallId merging into one once detail is cleared — 'OpenCode rows collapse together') is present in the merged implementation too, since main's collapse key still keys on [itemType, label, detail].

[myNameArnav]

Superseded by #4083 (merged). Closing.