build(deps): bump ruby_llm from 1.3.1 to 1.6.4

[dependabot]

Bumps ruby_llm from 1.3.1 to 1.6.4.

Release notes

Sourced from ruby_llm's releases.

1.6.4

RubyLLM 1.6.4: Multimodal Tools & Better Schemas 🖼️

Maintenance release bringing multimodal tool responses, improved rake tasks, and important fixes for Gemini schema conversion. Plus better documentation and developer experience!

🖼️ Tools Can Now Return Files and Images

Tools can now return rich content with attachments, not just text! Perfect for screenshot tools, document generators, and visual analyzers:

class ScreenshotTool < RubyLLM::Tool
  description "Takes a screenshot and returns it"
  param :url, desc: "URL to screenshot"
def execute(url:)
screenshot_path = capture_screenshot(url)  # Your screenshot logic
# Return a Content object with text and attachments
RubyLLM::Content.new(
  &quot;Screenshot of #{url} captured successfully&quot;,
  [screenshot_path]  # Can be file path, StringIO, or ActiveStorage blob
)

end
end
The LLM can now see and analyze the screenshot
chat = RubyLLM.chat.with_tool(ScreenshotTool)
response = chat.ask("Take a screenshot of ruby-lang.org and describe what you see")

This opens up powerful workflows:

• Visual debugging: Screenshot tools that capture and analyze UI states
• Document generation: Tools that create PDFs and return them for review
• Data visualization: Generate charts and have the LLM interpret them
• Multi-step workflows: Chain tools that produce and consume visual content

Works with all providers that support multimodal content.

🔧 Fixed: Gemini Schema Conversion

Gemini's structured output was not preserving all the schema fields and integer schemas were converted to number. Now the conversion logic correctly handles:

# Preserve description
schema = {
  type: 'object',
  description: 'An object',
  properties: {
    example: {
      type: "string",
</tr></table> 

... (truncated)

Commits

• eca308b Bump version to 1.6.4
• 8d1e109 Refactor Rake tasks: consolidate model updates, add cassette management for r...
• 348a1aa Fixed supervisor pattern in agentic workflow doc
• 08d50f0 Support returning Content objects from Tools
• 474ee96 Fix Gemini schema conversion
• d2f0604 Redirect /installation to /getting-started
• e852857 Bust README badge caches
• 20bb0c5 Updated appraisal gemfiles
• 75e0d87 Bump version to 1.6.3
• 153aad7 Remove unnecessary comments
• Additional commits viewable in compare view

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[dependabot]

Superseded by #46.