feat: enable native tool calling for gemini provider

[hannesrudolph]

Important

Enable native tool calling for Gemini provider by updating model support, handler logic, and conversion functions, with corresponding tests.

• Behavior:
  • Enable native tool calling for Gemini models by setting supportsNativeTools: true in geminiModels in gemini.ts.
  • Update GeminiHandler in gemini.ts to handle tool-related metadata and function calls, including tool ID to name mapping and function call configuration.
• Conversion Logic:
  • Update convertAnthropicContentToGemini() in gemini-format.ts to handle tool_use and tool_result blocks, using a map for tool ID to name conversion.
  • Add error handling for missing tool names in gemini-format.ts.
• Tests:
  • Update tests in gemini-format.spec.ts to cover tool use and result conversion, including error cases for missing tool names.

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[roomote]

Oroocle   See task on Roo Cloud

Review complete for the latest Gemini native tool calling changes. No new issues were identified; previously flagged concerns remain resolved.

• Tool call ID collision for Gemini native tool calling
• Type mismatch in Gemini countTokens helper

Previous reviews

• b608e70: Review #1
• c8f7bf4: Review #2
• de15baf: Review #3
• 7aa1152: Review #4
• bb1973d: Review #5
• bb1973d: Review #6
• 88b3f74: Review #7
• d6bd20b: Review #8

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}

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Oroocle   Follow along on Roo Cloud

Reviewing your PR now. Feedback coming soon!

[alippai]

@hannesrudolph does this detect Gemini over OpenAI compatible provider?

[hannesrudolph]

@hannesrudolph does this detect Gemini over OpenAI compatible provider?

Nope. It's running the genai ask