Run 1 Suggestions: API Proxy Publish

Improvement suggestions, identified risks, and documentation gaps from Run 1.

Body Serialization for Non-JSON Content Types

The contentType option on RequestOptions currently only changes the Content-Type header — request() unconditionally calls JSON.stringify(body). This is correct for the current API surface (all endpoints consume JSON), but if multipart upload or raw-body support is needed in the future, the serialization logic will need to branch on content type. Consider adding this when a concrete use case arises.

RequestContext Validation

RequestContext accepts any string for author, tenantId, and userId with no validation. For BFF usage this is fine (values come from the authenticated session), but standalone consumers could accidentally pass empty strings. A future enhancement could add runtime validation or a factory function.

Upstream Branch Configuration

The worktree’s local branch tracks origin/main rather than origin/jmpicnic/image-upload-frontend, which causes git push to fail without explicit origin HEAD. Future worktree setup should set the upstream to the feature branch: git branch --set-upstream-to=origin/<branch>.

Documentation Gaps

The api-proxy CLAUDE.md references Node 18.18+ as the minimum — this should be updated to reflect the new Node 20+ requirement.
The knowledge-base directory could benefit from a file documenting the header convention (Authorization: Bearer + conditional identity headers) for future contributors.