120 add token limit

[TakalaWang]

No description provided.

[TakalaWang]

This pull request includes several changes to improve error handling and validation in the API endpoints. The most important changes involve adding content length and file size validations, and enhancing error responses.

Error handling and validation improvements:

• src/routes/api/session/[id]/group/[group_number]/conversations/[conv_id]/chat/+server.ts: Added a check to throw an error if the content length exceeds 500 characters. (src/routes/api/session/[id]/group/[group_number]/conversations/[conv_id]/chat/+server.tsR42-R45)
• src/routes/api/session/[id]/group/[group_number]/conversations/[conv_id]/chat/+server.ts: Enhanced the error response to include the error object when an internal server error occurs. (src/routes/api/session/[id]/group/[group_number]/conversations/[conv_id]/chat/+server.tsL105-R112)
• src/routes/api/template/[id]/resource/+server.ts: Added a check to return an error if the file size exceeds 10 MB. (src/routes/api/template/[id]/resource/+server.tsR56-R58)

[Copilot]

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

src/routes/api/template/[id]/resource/+server.ts:57

• The error message 'File size limit exceeded' is unclear. It should specify the limit, e.g., 'File size limit exceeded. Maximum allowed size is 10MB.'

return json({ error: 'File size limit exceeded' }, { status: 400 });