feat(rebuild): #56 human rebuild errors point at doctor

sys-update / sys-rebuild / home-update tee output and on failure print
the last 40 log lines plus nomarchy-doctor + RECOVERY.md. theme-sync HM
switch failure notify/die text matches. Close #56.

Verified: V1 (HM rebuild; failure-footer shell smoke).

agent/JOURNAL.md

@@ -17,6 +17,21 @@ Template:
 
 ---
 
+## 2026-07-10 — #55 fingerprint menu + #56 human rebuild errors
+- **Task:** NEXT #55 (System › Fingerprint) + #56 (rebuild failure UX).
+- **Did:** #55 — System row self-gated on fprintd-list; enroll/list/verify/
+  delete-all terminal flows; Use for login writes
+  `settings.fingerprint.pam` (hardware.nix default from stateFile);
+  HARDWARE.md §5 + HARDWARE-QUEUE V3 enroll. #56 — sys-update /
+  sys-rebuild / home-update tee last 40 lines + nomarchy-doctor pointer;
+  theme-sync run_switch notify/die text. Closed #55/#56.
+- **Verified:** **V1** — HM template rebuild (menu + theme-sync);
+  option-docs green; failure-footer shell smoke. **V3 pending:** real
+  fingerprint enroll (queue). **V2 pending:** forced bad sys-rebuild in
+  VM (footer text pure/logic covered).
+- **Next suggestion:** queue was A–C; remaining NEXT is blocked items
+  (#14/#20/#41) or PROPOSED triage.
+
 ## 2026-07-10 — #58 nomarchy-detect-hw CLI
 - **Task:** NEXT #58 — post-install re-probe package (HARDWARE.md §8).
 - **Did:** `pkgs/nomarchy-detect-hw` wrapping installer’s hardware-db;