feat: a bunch of smaller enhancements

[ErikBjare]

• auto-focus when starting/switching conversation
• changed style of thinking blocks (faded, denser, "dreamy" inset shadow)
• escape to interrupt
• tool confirmation dialog
  • long tool content no longer breaks UI (now has max height with scrolling)
  • more vertical space for args/content
  • CodeDisplay component with code highlighting, line numbers, copy button (idea was to use it for rendered chat-markdown, but not so easy)
  • hide arguments if none
• we no longer use hljs.getLanguage(lang), but we should!

[ellipsis-dev]

❌ Changes requested. Reviewed everything up to 6ddeb73 in 2 minutes and 18 seconds

More details

• Looked at 607 lines of code in 8 files
• Skipped 0 files when reviewing.
• Skipped posting 5 drafted comments based on config settings.

1. src/components/ConversationContent.tsx:58

• Draft comment:
  The focus flag reset via a 100ms timeout works but could be fragile; consider more deterministic focus management.
• Reason this comment was not posted:
  Confidence changes required: 50% <= threshold 50%
  None

2. src/utils/markdownUtils.ts:78

• Draft comment:
  The check for transforming thinking tags (skipping content wrapped in backticks) is a bit naive; it may miss inline code cases.
• Reason this comment was not posted:
  Comment was not on a location in the diff, so it can't be submitted as a review comment.

3. src/components/ChatInput.tsx:92

• Draft comment:
  Both the local keydown handler (lines 92-100) and the global document listener (lines 57-69) trigger onInterrupt for Escape. Consider calling e.stopPropagation() in handleKeyDown to avoid duplicate calls if the event bubbles.
• Reason this comment was not posted:
  Comment was not on a location in the diff, so it can't be submitted as a review comment.

4. src/utils/markdownUtils.ts:77

• Draft comment:
  The early return in transformThinkingTags for content starting and ending with backticks (lines 78-80) may be too broad and could skip transformation for inline code segments. Consider refining this check.
• Reason this comment was not posted:
  Comment was not on a location in the diff, so it can't be submitted as a review comment.

5. src/utils/markdownUtils.ts:99

• Draft comment:
  Extracting the language tag from the code block's class (using split(' ')[1]) might be brittle if no language class is present. Consider a more robust fallback mechanism.
• Reason this comment was not posted:
  Comment was not on a location in the diff, so it can't be submitted as a review comment.

Workflow ID: wflow_21qHAQv2LcDbSgGG

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[ellipsis-dev]

Consider if duplicate Escape handling (global listener vs. Textarea keydown) might trigger onInterrupt twice.

[ErikBjare]

Maybe only have the global listener, so that user can escape once to unfocus textarea and once again to interrupt?

Not sure how these handlers work together right now.

[ellipsis-dev]

Consider adding error handling for navigator.clipboard.writeText in handleCopy to gracefully handle clipboard API failures.

Suggested change

	navigator.clipboard.writeText(code);
	try { navigator.clipboard.writeText(code); } catch (err) { console.error('Failed to copy text:', err); }