feat: Add API version support for Azure OpenAI in codebase indexing

[roomote]

Summary

This PR fixes issue #5212 by adding support for the required api-version query parameter when using Azure OpenAI with the "OpenAI Compatible" provider in codebase indexing.

Problem

When using Azure OpenAI embedding models through the "OpenAI Compatible" provider, users consistently receive 404 errors because the extension doesn't include the mandatory api-version query parameter that Azure OpenAI API requires.

Solution

• Added API Version Field: New optional apiVersion parameter in the OpenAI Compatible provider configuration
• Smart URL Construction: Modified the OpenAICompatibleEmbedder to intelligently append the api-version query parameter to the base URL
• UI Enhancement: Added a dedicated "API Version" input field in the settings with placeholder text "2023-05-15"
• Type Safety: Updated all relevant TypeScript interfaces and Zod schemas
• Comprehensive Testing: Added test coverage for API version functionality
• Internationalization: Added English translation keys for the new field

Technical Details

URL Construction Logic

The embedder now handles both scenarios:

• Base URL without query params: https://example.openai.azure.com/openai/deployments/model → https://example.openai.azure.com/openai/deployments/model?api-version=2023-05-15
• Base URL with existing query params: https://example.com/api?key=value → https://example.com/api?key=value&api-version=2023-05-15

Files Modified

• packages/types/src/codebase-index.ts - Added schema validation
• src/services/code-index/interfaces/config.ts - Updated interfaces
• src/services/code-index/config-manager.ts - Added config management
• src/services/code-index/embedders/openai-compatible.ts - Core URL construction logic
• src/services/code-index/service-factory.ts - Updated service instantiation
• webview-ui/src/components/settings/CodeIndexSettings.tsx - Added UI field
• webview-ui/src/i18n/locales/en/settings.json - Added translations
• src/services/code-index/embedders/__tests__/openai-compatible.spec.ts - Added tests

Testing

✅ All existing tests pass
✅ New test cases cover API version functionality
✅ Type checking passes across all packages
✅ Linting passes with no warnings

Manual Testing Instructions

1. Open VSCode with the Roo Code extension
2. Go to Settings → Codebase Index
3. Select "OpenAI Compatible" as the provider
4. Enter your Azure OpenAI endpoint URL (e.g., https://your-resource.openai.azure.com/openai/deployments/your-model)
5. Enter your API key
6. NEW: Enter an API version (e.g., 2023-05-15) in the new "API Version" field
7. Save settings and test codebase indexing

Backward Compatibility

✅ The apiVersion field is optional, so existing configurations continue to work
✅ No breaking changes to existing APIs or interfaces
✅ Graceful handling when API version is not provided

Fixes #5212

---

Important

Adds optional apiVersion support for Azure OpenAI in OpenAI Compatible provider, updating URL logic, UI, and tests.

• Behavior:
  • Adds optional apiVersion parameter to OpenAI Compatible provider configuration.
  • Updates OpenAICompatibleEmbedder to append api-version query parameter to URLs.
  • UI updated in CodeIndexSettings.tsx to include "API Version" input field.
• Type Safety:
  • Updates TypeScript interfaces and Zod schemas to include apiVersion.
• Testing:
  • Adds tests in openai-compatible.spec.ts to cover apiVersion functionality.
• Internationalization:
  • Adds English translation keys for the new "API Version" field.

^{This description was created by for 5ab3ae8. You can customize this summary. It will automatically update as commits are pushed.}

[delve-auditor]

✅ No security or compliance issues detected. Reviewed everything up to 5ab3ae8.

Security Overview

• 🔎 Scanned files: 8 changed file(s)

Detected Code Changes

The diff is too large to display a summary of code changes.

Reply to this PR with @delve-auditor followed by a description of what change you want and we'll auto-submit a change to this PR to implement it.