- Replaced the fixed `CALL_PREVIEW_MAX_LINES` cap in `render-utils.ts` with a dynamic `previewWindowRows()` (terminal rows minus a chrome reserve); `capPreviewLines` now returns lines untouched when expanded and windows them otherwise.
- Applied the cap in every render state for bash and ssh command previews — streaming and final render identically instead of snapping fully open on completion — and included the preview window in bash's render cache key so terminal resizes invalidate it.
- Capped eval cell code previews via the same window; previously cell code was never capped at all, with `ctrl+o` remaining the only way to uncap.
- Added stream-vs-final parity coverage in `bash-sixel-render.test.ts`, `ssh-render.test.ts`, and the new `eval-code-preview.test.ts`, and a changelog entry.
Follow-up to the loop guard + artifact cap that addressed the root cause
of issue #2081's runaway captures. The reporter then noted Ctrl+X/Ctrl+C
remaining unresponsive — confirming the secondary symptom: per-keystroke
TUI repaints walked every visible bash row and re-ran `split` /
`replaceTabs` / `truncateToVisualLines` over the stored output. With a
1,000+ message transcript and a 50KB-tail per row, that string work was
what pinned the main thread, not the loop itself.
The eval renderer already caches its computed lines keyed by `(width,
previewLines)` — see `eval-render.ts:709-752`. Mirrored that pattern in
the bash result renderer with a slightly wider key (`width`,
`previewLines`, `expanded`, `rawOutput`, `isPartial`) so the cache is
busted whenever any input that affects the produced lines actually
changes. `invalidate()` continues to clear `CachedOutputBlock` and now
also clears the lines cache, so callers that already drive invalidation
keep working unchanged.
A render() with cache-equivalent inputs is now an array-reference
return; the `CachedOutputBlock` round trip is skipped entirely. New
test in `test/tools/bash-sixel-render.test.ts` pins the contract:
identical inputs → same array reference; width change → cache miss;
invalidate() → fresh array.
Refs #2081
- Added a `showHeader` option to shell rendering and suppressed the bash frame title bar by default.
- Parsed trailing raw-output artifact notices and folded their IDs into status footer metadata instead of command output.
- Updated task call and result rendering to process shared context with the Markdown renderer, so context sections are now displayed with proper Markdown formatting.
- Stopped shimmer animation on pending bash/eval/task blocks once async state is `running`, preventing the committed frame from freezing a transient dark border segment.
- Adjusted rule path display to fall back to a root-relative path when cwd-relative resolution is unavailable.
- Added clockwise sweeping dark segment animation to output block borders while bash/eval tool calls are pending/running.
- Changed bash renderCall to immediately render a full bordered block instead of a one-liner status preview, so silent commands show the framed block for their entire runtime.
- Added shimmerEnabled() helper and wired animate flag through OutputBlockOptions, CodeCellOptions, and shell/eval renderers.
- Tagged non-zero bash command completions as error results, capturing `exitCode` and keeping exit notices in returned text.
- Updated the shell renderer to hide duplicate exit notices from output while surfacing failed command status in the footer.
- Added tests for non-zero versus zero-exit bash results and footer rendering of failed commands.
- Measured bash wall-clock duration for direct, terminal-bridge, and interactive execution paths.
- Recorded wall time in result notices and details, then stripped the duplicated literal notice during shell rendering.
- Updated the renderer to include wall time in the status label and added tests for the new wall-time behavior.
- Restored formatDimensionNote bracket form '[Image: original WxH, displayed at WxH. Multiply coordinates by S to map to original image.]' that tests assert. The Bun 1.3.14 refactor regressed it to a less informative 'Image resized from …' line.
- Broadened bash-sixel-render multi-line styling assertion to accept both truecolor (38;2;) and 256-color (38;5;) SGR runs so CI runners with TERM=dumb don't fail. The contract being tested — every line carries its own SGR — is independent of color depth.
- Added a new formatBashCommandLines helper that syntax-highlighted each command line and applied the dim prefix only to the first line.
- Updated the shell renderer to emit command output as line-based entries instead of a single dimmed string.
- Extended the bash renderer test to verify multi-line commands keep ANSI styling on every rendered line.
- Added markdown `Row` chunk support by introducing `ChunkKind::Row`, mapping it to tag `"row"`, and emitting row chunks for table rows.
- Updated Go chunk parsing to support method signatures (`func (recv) Name`), prefer method parsing in signatures, and adjust root rules to classify package/import chunks correctly.
- Changed chunk-edit behavior to add read-only `read:true`, replace `write:null` deletes with explicit `delete`, and require one explicit action per entry.
- Added safer chunk-edit execution with region matching, replacement reindentation, table-row append handling, and stricter warnings/errors for boundary and invalid operations.
- Replaced deprecated `await` tool wiring with `poll` in tool exports and built-in tool registry.
- Updated bash and task prompts plus start-result messaging to direct users to the `poll` tool.
- Added effective timeout metadata to Bash tool results and rendered output to show that effective timeout.
- Implemented bounded auto-background wait logic that backgrounds jobs when the timeout window is exhausted.
- Added bounds clamping to prologue and epilogue byte calculations to prevent out-of-range boundary violations.
- Extended chunk boundaries for indent-based languages when epilogue exceeds calculated range with trailing newline.
- Added comprehensive test coverage for Python chunk editing operations including body/head replacement and indentation preservation.
- Extracted working directory formatting logic into reusable utility function and applied tab sanitization to bash command previews.
- Added `env` parameter to bash tool for safe environment variable passing without shell re-parsing.
- Added support for rendering partial environment variable assignments in command preview during streaming.
- Updated bash tool prompt to recommend `env` parameter for multiline, quote-heavy, and untrusted values.
- Refactored tool execution component to conditionally merge partial JSON arguments during streaming.
- Added helper functions for environment variable normalization, escaping, and formatting.
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