[iXab3r]

Problem

Submodule initialization inherits Git's 30-second total deadline. Slow clones are interrupted mid-checkout, but worktree creation still succeeds. The reported Windows 0.1.5 trace confirms a timeout after 30.9 seconds.

Change

Set timeoutMs: null only for the submodule update, matching the existing cancellable git worktree add path. Cancellation and best-effort failure handling remain unchanged; the warning now describes submodules as potentially incomplete.

Scope and approval

Follows #26409 to fix the 30-second submodule-update timeout reported in #26390. #7674 introduced automatic initialization; #23802 later removed the worktree-add deadline. This applies the same policy to submodule checkout.

Verification

• Seven focused tests pass: recursive/top-level checkout with/without progress past six simulated minutes, recorded gitlink and clean status, cancellation, and best-effort failure. Five regression cases fail with the original deadline.
• Real client, identical slow fixture and separate databases; actual Git verification in the app terminal, with free Replay (dev). Cancellation and cleanup also verified.
• vp run check:changed: all static checks pass; 172 tests pass, one skipped, ten failures. All ten also reproduce with the original fork code at 6575ce3250 on this Windows/Git 2.32 host.

Before — 31.2 s timeout (6575ce3250)	After — 40.9 s complete (6f8633f5de)
sub03/nested has no files despite clean parent status	All six submodules populated at recorded gitlinks; clean status

Model and harness: GPT-6.1 Sol via Codex in T3 Code.