Add UX improvements: collapsible cells, copy buttons, syntax highlighting, and ANSI sanitization#47

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ShlomoStept wants to merge 19 commits intosimonw:mainfrom

ShlomoStept:cleanup/upstream-pr-final

Commits on Feb 12, 2026

Add ANSI escape code sanitization and content-block array rendering

ShlomoStept
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claude
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Add copy buttons to code blocks and tool results

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Add syntax highlighting with Pygments for code blocks

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Update TASKS.md and AGENTS.md with comprehensive documentation

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Render content-block arrays fully
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Harden ANSI escape sanitization
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Pair tool_use with tool_result
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Format code and update snapshots after merge
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Start Phase 2: collapsible cells and tool markdown
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Add Markdown rendering for tool descriptions and JSON string values

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claude
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Add collapsible cell structure for assistant messages

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Add per-cell copy buttons for collapsible sections

ShlomoStept
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claude
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Add UI improvements for collapsible cells and tool rendering

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claude
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Implement comprehensive UI improvements for Phase 2

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Fix JSON display mode and tabs alignment regressions

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Implement Phase 2 remaining items: metadata subsection and tool icons

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Fix duplicate test method by renaming to unique name

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Refactor _github_repo to thread-safe contextvars

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Add Clipboard API fallback for older browsers

ShlomoStept
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claude
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Add UX improvements: collapsible cells, copy buttons, syntax highlighting, and ANSI sanitization#47

Add UX improvements: collapsible cells, copy buttons, syntax highlighting, and ANSI sanitization#47
ShlomoStept wants to merge 19 commits intosimonw:mainfrom
ShlomoStept:cleanup/upstream-pr-final

Commits on Feb 12, 2026

Add ANSI escape code sanitization and content-block array rendering

Add copy buttons to code blocks and tool results

Add syntax highlighting with Pygments for code blocks

Update TASKS.md and AGENTS.md with comprehensive documentation

Render content-block arrays fully

Harden ANSI escape sanitization

Pair tool_use with tool_result

Format code and update snapshots after merge

Start Phase 2: collapsible cells and tool markdown

Add Markdown rendering for tool descriptions and JSON string values

Add collapsible cell structure for assistant messages

Add per-cell copy buttons for collapsible sections

Add UI improvements for collapsible cells and tool rendering

Implement comprehensive UI improvements for Phase 2

Fix JSON display mode and tabs alignment regressions

Implement Phase 2 remaining items: metadata subsection and tool icons

Fix duplicate test method by renaming to unique name

Refactor _github_repo to thread-safe contextvars

Add Clipboard API fallback for older browsers