Client can not connect to an opencode in server mode. #50029

Description

How to replicate

• Setup the server
  opencode serve --port 4096 --hostname 0.0.0.0
• Run client
  opencode run --server "http://localhost:4096"  ✔ 
• Error

[19:25:20.667] ERROR (#1): Error: Server at http://localhost:4096 did not provide a compatible V2 health response
at ~effect/Utils/internal (/$bunfs/root/chunk-7a22e4a2.js:8:1540)
at s (/$bunfs/root/chunk-7a22e4a2.js:24:5696)
at processTicksAndRejections (native:7:39)
at cli.server-connection.resolve (/$bunfs/root/chunk-t9yvjesk.js:2:900)
at cli.server-connection.resolve (definition) (/$bunfs/root/chunk-fetwdtfr.js:2:399) {
[cause]: ClientError: UnsupportedContentType
at S (/$bunfs/root/chunk-kpb3c462.js:13:25549)
at async (/$bunfs/root/chunk-kpb3c462.js:2:912)
at processTicksAndRejections (native:7:39)
}

• Issue
  The server is sending back html pages. The below should return a json
  curl -i -u opencode: http://localhost:4096/global/health

Following returns 404 response
curl -i -u opencode: http://localhost:4096/api/health

Plugins

No response

OpenCode version

No response

Steps to reproduce

No response

Screenshot and/or share link

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Operating System

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Terminal

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