feat: add custom requestHeaders support for custom OAI and Azure models in BYOK

[zhichli]

No description provided.

[Copilot]

Pull Request Overview

This PR adds support for custom HTTP headers in BYOK (Bring Your Own Key) configurations for both Azure and custom OpenAI models. Users can now specify additional request headers that will be sent with API requests to their custom model endpoints.

• Extends the model configuration interfaces to include optional requestHeaders field
• Implements header sanitization logic to prevent overriding reserved system headers
• Updates the OpenAI endpoint to merge custom headers with default request headers

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/platform/endpoint/common/endpointProvider.ts	Adds requestHeaders field to IChatModelInformation interface
src/platform/configuration/common/configurationService.ts	Updates CustomOAIModels type definition to include requestHeaders
src/extension/byok/vscode-node/customOAIProvider.ts	Integrates requestHeaders throughout the custom OAI provider implementation
src/extension/byok/vscode-node/customOAIModelConfigurator.ts	Adds requestHeaders to the ModelConfig interface
src/extension/byok/node/openAIEndpoint.ts	Implements header sanitization and merging logic for custom headers
src/extension/byok/common/byokProvider.ts	Updates BYOK interfaces and resolveModelInfo to handle custom headers
package.json	Adds schema definitions for the new requestHeaders configuration options

[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.