Windows linked worktree startup can hang in Project.fromDirectory() while UI shows Loading plugins #25022

On Windows, OpenCode can intermittently hang on startup in linked worktrees while the UI sits on Loading plugins....

This is not just slow startup. In the bad case it never reaches the prompt.

What I traced:

• startup enters Project.fromDirectory()
• linked worktree discovery shells out to Git for topology info
• the calls include git rev-parse --git-common-dir, git config --bool core.bare, and git rev-parse --show-toplevel
• when that path hangs, the UI still looks like plugin loading is the problem even though the blocker is earlier

Why this looks avoidable:

• a linked worktree already has the needed metadata on disk
• the worktree .git file points at the admin dir
• the admin dir contains gitdir and commondir

So the startup path is depending on Git subprocesses to rediscover data that is already available locally.

I have a patch prepared that resolves linked worktree topology from that metadata first and only falls back to Git if the metadata cannot be parsed safely.

Repro

• run OpenCode on Windows from a linked worktree
• in the bad case it stays on Loading plugins... and never reaches the prompt

Scope

This issue is specifically about linked-worktree startup discovery. It is not a claim that every Windows startup delay has the same cause.