Threads the per-user custom_headers values stored on
mcp_server_user_header_values through the chatd MCP client so users
who provided a value for an admin-marked CustomHeadersUserKey see it
mixed into the outgoing request alongside the admin-static headers.
Changes:
- mcpclient.ConnectAll grows a fourth indexed input,
[]database.McpServerUserHeaderValue, which buildAuthHeaders
consults inside the custom_headers branch to overlay per-user
values on top of admin static headers, scoped to
cfg.CustomHeadersUserKeys.
- chatd loads the user's stored header values via
GetMCPServerUserHeaderValuesByUserID alongside the existing
GetMCPServerUserTokensByUserID call and threads them into
ConnectAll. A missing row is non-fatal: admin headers still
ship, user-keyed headers are simply absent and a warning is
logged.
- mcpclient.go inlines its own DefaultTransport clone for test
isolation, replacing the standalone helper in mcphttpclient.go,
which is removed.
Stack: 4/6 (chatd runtime overlay)
Steven Masley