fix(deps): update dependency streamdown to v2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
streamdown (source)	^1.6.10 → ^2.0.0

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Release Notes

vercel/streamdown (streamdown)

v2.1.0

Compare Source

Minor Changes

• 0b80aed: Plugins
• 5a06a01: Add built-in link safety

Patch Changes

• 32bcb5d: Fix: className styles not applied during active streaming
• e45f2a2: fix: table element receives incorrect data-streamdown attribute (table-wrapper instead of table)
• 8e24a9e: Add fallback for downloading images CORS issue
• e7e5390: Improve caret rendering
• 900d726: Code blocks render inside

  tags causing hydration errors

• f0641f4: fix: initialize displayBlocks with blocks value
• Updated dependencies [3376255]
• Updated dependencies [add8eda]
• Updated dependencies [19dae64]
• Updated dependencies [1d4a3c7]
  • remend@​1.1.0

v2.0.1

Compare Source

Patch Changes

• 61b3685: Fix Streamdown URL

v2.0.0

Major Changes

• 75faa2e: Reduce bundle size by 98%, create Streamdown CDN

Minor Changes

• 13b91d8: Add support for carets

Patch Changes

• 104798e: Make remend configurable

• 23f2a40: Attempt to fallback to raw to prevent cdn-loader blocking

• 133c6c8: Load KaTeX CSS from CDN

• 0c830f5: Fix Mermaid pan/zoom controls layout issues in fullscreen and non-fullscreen modes

• 68109f2: Fix setext heading issues

• 2c32b2e: Fix shouldParseIncompleteMarkdown leaking to DOM

• ee12ec8: Add support for self-hosted CDN

• 5653400: Fix loading langs dynamically

• 1b898b0: Fix dynamic module imports

• 6a7dc7c: Optimize Mermaid rendering performance with viewport-based lazy loading

  • Add useDeferredRender hook for lazy loading components when entering viewport
  • Use Intersection Observer + debounce + requestIdleCallback for optimal performance
  • Only render Mermaid charts when they are visible or about to enter viewport
  • Prevents page freezing when loading chat history with many Mermaid diagrams
  • Fixes white screen issue when scrolling through chat messages with multiple diagrams

• 8d8d67f: Add rehype sanitize

• 271265c: Fix list indentation

• 8157e80: Fix fullscreen mermaid

• 91b425f: Refactor click outside handler for Shadow DOM compatibility

• 16df4a4: Fix KaTeX parsing

• 6bd211d: Update rehype-harden to fix relative URLs

• 48c9c51: Fix autolink parsing to stop at CJK punctuation boundaries.

• d1635f0: Fix bug: Code block line numbers over 100 wrap and start new line

• Updated dependencies [104798e]

• Updated dependencies [6769e7a]

• Updated dependencies [217b128]

• Updated dependencies [68109f2]

• Updated dependencies [e0ee74e]

• Updated dependencies [45f0f4d]

• Updated dependencies [b8c8c79]

• Updated dependencies [68f29c0]

• Updated dependencies [e7eca51]

• Updated dependencies [d708864]

  • remend@​1.0.2

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