feat: include UID in requests per OpenAI guidance

[nickytonline]

This PR adds support for including a unique end-user ID (uid) in outbound requests to OpenAI, in line with their abuse monitoring recommendations. OpenAI recommends sending a unique end-user ID with each request to help them detect and prevent abuse more effectively. This allows them to provide more actionable feedback if any policy violations are identified in our application.

Closes #46

[Copilot]

Pull Request Overview

This PR adds a user identifier to the OpenAI API requests to meet updated requirements as discussed in issue #46.

• The API route now extracts and passes a user ID from the result data.
• The chat request schema has been updated to require a userId field.
• The user context and Chat component are updated to incorporate the user identifier in client-side logic.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/routes/api/chat.ts	Destructure userId from result data and pass it to the stream call.
src/lib/schemas.ts	Add a required userId string to the chat request schema.
src/contexts/UserContext.tsx	Update the user information mapping to include an id field.
src/components/Chat.tsx	Include user?.id as userId in the Chat component’s payload and dependency list.

Comments suppressed due to low confidence (4)

src/lib/schemas.ts:68

• Including userId as a required string in the schema is appropriate; confirm that all clients sending requests conform to this updated schema.

userId: z.string(),

src/contexts/UserContext.tsx:26

• [nitpick] Mapping userInfo.user to id is acceptable, but consider adding a comment clarifying this choice to ensure consistency for future developers.

id: userInfo.user,

src/routes/api/chat.ts:38

• The addition of userId looks correct; please ensure that the downstream API consumer properly validates and handles the new 'user' field in the streamText call.

const { messages, servers, model, userId } = result.data

src/components/Chat.tsx:55

• Including user?.id in the payload and dependency list is correct; ensure that the component gracefully handles scenarios where user?.id might be undefined.

userId: user?.id,

[nickytonline]

@wasaga, in the end, I didn't need to make changes to the @pomerium/js-sdk package. I think the spotty Internet today at the conference caused issues leading me to think that info wasn't surfaced in UserInfo.