Session shell route responses are compressed unlike message and prompt_async

Description

POST /session/:sessionID/shell returns a buffered JSON body just like its sibling routes message and prompt_async, but it is missing from STREAMING_POST_REGEX in packages/opencode/src/server/routes/instance/httpapi/middleware/compression.ts:

const STREAMING_POST_REGEX = /^\/session\/[^/]+\/(?:message|prompt_async)$/

So shell responses get gzip/deflate compressed while message and prompt_async responses are exempt. Adding shell to the alternation makes the three buffered session POST routes behave consistently. I have a one-line PR ready.

Plugins

No response

OpenCode version

dev (19231fc)

Steps to reproduce

1. Start the server (bun dev serve)
2. POST /session/:sessionID/shell with Accept-Encoding: gzip and a response body over 1024 bytes
3. Response comes back with content-encoding: gzip; the same request shape against /session/:sessionID/message does not

Screenshot and/or share link

No response

Operating System

macOS

Terminal

No response