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v0.4.1 — fast session start on large repositories
Fixes auto-session worktree creation failing (hook timeout) on large checkouts.
- Removed
du-based size estimation from the create path — it took 12s+ on multi-GB repos and ran inside the 10s SessionStart hook budget. Create now uses an instant statfs floor check; detailed sizing remains inworktrees_status/worktrees_list. - Hook budget raised to 30s (session start on a 43 GB repo now completes in ~8s).
- Hook-side lock wait is 5s — a contended store lock fails fast with a clear message instead of eating the hook budget.
- Regression tests for both (static no-du guard + lock fail-fast), 125 tests green.