V1 follow-up prompts are sent to the project directory instead of the session directory

Description

V1 follow-up prompts are sent to the wrong workspace directory.

In the V1 protocol the follow-up prompt path (sendFollowupDraft in the app) calls input.api.prompt without the session's directory. The directory-scoped API client only knows the project directory, so a follow-up prompt for a session that lives in another worktree or directory is routed to the wrong location instead of the session's own directory.

Plugins

n/a

OpenCode version

latest dev

Steps to reproduce

1. Open a session whose directory differs from the current project directory (e.g. a worktree session on a v1 server).
2. Send a follow-up prompt.
3. The prompt is delivered against the project directory rather than the session's directory.

Screenshot and/or share link

n/a

Operating System

n/a (all)

Terminal

n/a