diff --git a/docs/m17-m18-plan.md b/docs/m17-m18-plan.md
index bde42d5..ddcbafc 100644
--- a/docs/m17-m18-plan.md
+++ b/docs/m17-m18-plan.md
@@ -26,9 +26,9 @@ run the existing QEMU suite green before any new work starts.
 The loop marks a phase `[x]` in the same commit that lands it. A phase is marked
 only when its definition of green holds.
 
-- [ ] **Phase 0** — baseline: docs committed ✓, feat/usb merged to main ✓, pushed ✓;
-      remaining: rename `usb-xhci-libary.zig` → `usb-xhci-library.zig` (naming
-      typo, empty file), run the existing QEMU suite green from the worktree.
+- [x] **Phase 0** — baseline: docs committed, feat/usb merged to main, pushed;
+      `usb-xhci-libary.zig` renamed to `usb-xhci-library.zig`; existing QEMU
+      suite green from the worktree (48/48, 2026-07-12).
 - [ ] **M17.1** — kernel releases claims/MSI on death (branch `feat/process-lifecycle`)
 - [ ] **M17.2** — exit reasons
 - [ ] **M17.3** — published exit events + VFS subscriber