Description

Originally had it italicize the text too but I couldn't figure out how to do multi-line italics, ink would only just render the first line :/ There's also a visual bug unrelated to this PR with some models response's where the dot and vertical alignment don't line up (as seen in this screenshot)

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Checklist

• [] I've read the contributing guide
• [] The relevant docs, if any, have been updated or created
• [] The relevant tests, if any, have been updated or created

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Tests

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Summary by cubic

Render ... blocks in the CLI as italic gray text to clearly distinguish thinking content, and ignore these tags inside code blocks. Implements CON-3771.

• New Features
  • Render blocks as italic gray text
  • Do not process tags inside code blocks
  • Tests for multiple tags, multiline content, and code-block cases