feat(tui): show outcome rows on collapsed tool cards

[elkholy90]

Related Issue

No tracked issue — follow-on to the minidb test isolation merge (#311).

Problem

Collapsed tool cards hid useful output behind ctrl+o and truncated long headers without preserving the result chip.

What changed

• Collapsed cards show a width-aware header and a short outcome row (up to three lines, then one telling line).
• Grep/Glob chips count files or matches from the tool output, skip notices, and keep the existing Glob pagination N+ files marker.
• The footer shows ctrl+o expand or ctrl+o collapse when a recent card hides output.

No docs update (existing ctrl+o tip still applies). Changeset included.

Checklist

• I have read the CONTRIBUTING document.
• I have linked a related issue (external PRs: the issue must have a maintainer's /approve).
• I have added tests that prove my feature works.
• Ran gen-changesets skill, or this PR needs no changeset.
• Ran gen-docs skill, or this PR needs no doc update.

Summary by CodeRabbit

• New Features
  • Collapsed tool cards now show concise outcome rows and width-aware headers.
  • Added clearer expand/collapse guidance for hidden tool output.
  • Improved summaries for shell commands, file changes, searches, reads, and fetches.
  • Headers preserve important details, such as filenames and result counts, when space is limited.
• Bug Fixes
  • Improved handling of truncated, spilled, partial, and paginated tool output.
  • Search and glob summaries now report counts and incomplete results more accurately.

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Run ID: 0ee8741b-221e-4a1a-b26a-fab335e8cc55

📥 Commits

Reviewing files that changed from the base of the PR and between 32c352e and 25b9adc.

📒 Files selected for processing (6)

• apps/pythinker-code/src/tui/components/messages/tool-call.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/grep-output.ts
• apps/pythinker-code/test/tui/components/dialogs/agent-activity-viewer.test.ts
• apps/pythinker-code/test/tui/components/messages/tool-call.test.ts
• apps/pythinker-code/test/tui/components/messages/tool-renderers/chip.test.ts
• apps/pythinker-code/test/tui/tasks-browser.test.ts

📝 Walkthrough

Walkthrough

Changes

Collapsed tool card rendering

Layer / File(s)	Summary
Rendering primitives and width-aware headers apps/pythinker-code/src/tui/components/messages/truncated-header-line.ts, apps/pythinker-code/src/tui/components/messages/tool-renderers/outcome.ts, apps/pythinker-code/src/tui/constant/rendering.ts, tests	Added width-aware header truncation, grapheme-safe rendering, spill-pointer handling, outcome-row helpers, and truncation-state tracking.
Tool output parsing and summary renderers apps/pythinker-code/src/tui/components/messages/tool-renderers/grep-output.ts, chip.ts, summary.ts, registry.ts, tests	Added structured Grep and Glob parsing. Updated chips and collapsed summaries to show file counts, partial results, hidden-line counts, and outcome rows.
Tool card and message integration apps/pythinker-code/src/tui/components/messages/tool-call.ts, read-group.ts, shell-execution.ts, tests	Tool cards now use structured headers, omit collapsed Bash previews, and render concise output rows. Read groups and shell execution use the shared header and outcome components.
Transcript expansion hints apps/pythinker-code/src/tui/pythinker-tui.ts, apps/pythinker-code/src/tui/components/chrome/footer.ts, apps/pythinker-code/src/tui/utils/*, .changeset/collapsed-tool-cards.md	Added hidden-content capability checks, shared expansion cutoff calculation, and footer hints for expanding or collapsing tool output. Added a patch changeset.

Priority: ⬇️ Low

Estimated code review effort: 4 (Complex) | ~45 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant PyThinkerTUI
  participant ToolCallComponent
  participant outcomeRows
  participant FooterComponent
  PyThinkerTUI->>ToolCallComponent: inspect hidden content
  ToolCallComponent->>outcomeRows: render collapsed output
  PyThinkerTUI->>FooterComponent: provide expand or collapse hint
  FooterComponent->>FooterComponent: render ctrl+o shortcut

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Merge Risk: 🟡 Moderate · up to 32c35

Collapsed Grep cards can show pagination text as a file, and long single-line commands can have undisclosed content with no expansion hint. Resolve these display and discoverability regressions before merging.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description includes the required sections, explains the problem and changes, documents testing, and notes the changeset and documentation decision. However, it does not link a related issue, and …	Link the related approved issue and update the checklist. If no approved issue exists, obtain maintainer approval or clarify the repository-approved exception before merging the feature PR.
Docstring Coverage	⚠️ Warning	Docstring coverage is 11.90% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 42 functions across 22 files. (1 skipped:…	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title uses the required conventional-commit prefix, stays within 72 characters, uses imperative wording, and clearly describes the main change.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Description check

Explanation

The description includes the required sections, explains the problem and changes, documents testing, and notes the changeset and documentation decision. However, it does not link a related issue, and the checklist confirms that this requirement is incomplete.

Full details: Docstring Coverage

Explanation

Docstring coverage is 11.90% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 42 functions across 22 files. (1 skipped: 1 unsupported.)

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commit: 25b9adc

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Actionable comments posted: 2

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Inline comments:
In `@apps/pythinker-code/src/tui/components/messages/tool-call.ts`:
- Line 478: Update the tool-call display flow around extractKeyArgument so it
uses the untruncated display value from extractKeyArgumentDetail() before
passing it to TruncatedHeaderLine. Remove the premature MAX_ARG_LENGTH
truncation while preserving width-aware truncation and expanded-card behavior.

In
`@apps/pythinker-code/src/tui/components/messages/tool-renderers/grep-output.ts`:
- Line 49: Update parseGrepOutput so pagination headers such as “Showing matches
…” are parsed separately for the header total and excluded from
entries/resultLines used as file results. Ensure Grep chips and glance samples
skip these notices, and update the header-only test to expect zero files rather
than one.

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Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

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📥 Commits

Reviewing files that changed from the base of the PR and between bdc2808 and 32c352e.

📒 Files selected for processing (23)

• .changeset/collapsed-tool-cards.md
• apps/pythinker-code/src/tui/components/chrome/footer.ts
• apps/pythinker-code/src/tui/components/messages/read-group.ts
• apps/pythinker-code/src/tui/components/messages/shell-execution.ts
• apps/pythinker-code/src/tui/components/messages/tool-call.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/chip.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/goal.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/grep-output.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/outcome.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/registry.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/summary.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/truncated.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/types.ts
• apps/pythinker-code/src/tui/components/messages/tool-renderers/wait-for.ts
• apps/pythinker-code/src/tui/components/messages/truncated-header-line.ts
• apps/pythinker-code/src/tui/constant/rendering.ts
• apps/pythinker-code/src/tui/pythinker-tui.ts
• apps/pythinker-code/src/tui/utils/component-capabilities.ts
• apps/pythinker-code/src/tui/utils/transcript-window.ts
• apps/pythinker-code/test/tui/components/messages/tool-call.test.ts
• apps/pythinker-code/test/tui/components/messages/tool-renderers/chip.test.ts
• apps/pythinker-code/test/tui/components/messages/tool-renderers/registry.test.ts
• apps/pythinker-code/test/tui/components/messages/truncated-header-line.test.ts

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