chore: add Windows setup script to t3.json

[UtkarshUsername]

What Changed

Add a second "Setup Worktree (Windows)" entry that creates the same .env symlinks with New-Item -ItemType SymbolicLink and uses pwsh env var syntax, so Windows worktrees get the same setup on worktree create.

Why

A Windows user opening this repo in T3 Code couldn't run the automatic worktree setup. The checked-in setup script in t3.json only works on mac/linux. Its command is written verbatim to the platform default shell (bash/zsh there, pwsh on Windows), so the ln -sf lines fail on Windows.

UI Changes

No UI changes.

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

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Note

Low Risk
Developer-tooling config only; no runtime app, auth, or data-path changes.

Overview
Adds a Setup Worktree (Windows) script alongside the existing Unix setup in t3.json, also marked runOnWorktreeCreate: true.

The new command mirrors the original flow (vp i, symlink root .env and infra/relay/.env, then warm-dep-cache.ts) but uses PowerShell New-Item -ItemType SymbolicLink and $env:T3CODE_PROJECT_ROOT paths so automatic worktree setup works when T3 runs the task in pwsh on Windows instead of failing on ln -sf.

^{Reviewed by Cursor Bugbot for commit 10b9384. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add Windows worktree setup task to t3.json

• Adds a "Setup Worktree (Windows)" task that runs automatically on worktree creation (runOnWorktreeCreate: true).
• The task chains a PowerShell command: runs vp i, creates .env and infra\relay\.env symlinks pointing to $env:T3CODE_PROJECT_ROOT, and executes node apps\web\scripts\warm-dep-cache.ts.
• Behavioral Change: Windows worktree creation now triggers dependency install, env symlink setup, and dependency cache warming automatically.

^{Macroscope summarized 10b9384.}

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[macroscopeapp]

Approvability

Verdict: Approved at e0219e6

Macroscope's review found this PR approvable — This is a small, self-contained t3.json change that adds Windows parity for existing local worktree setup behavior. Its effects are limited to development dependency installation, environment linking, and cache warming, with no production or product-default impact.

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[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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