hub v0.61.0 + felhom-tenantsync v1.1.0: Customer RESET (middle lifecycle tier)

One operator action returns a customer to pre-first-install: all operational
state dies (offsite repo, PBS namespace+backups, DR recipe, one-time secret,
claim state, retained escrow custody); identity + basic config + provenance +
events survive. Sits between host delete and customer Delete.

- store/customer_reset.go: customer_resets journal, live inventory, ack-gated
  purge (never touches identity/provenance/events), DeleteClaim.
- claim.ResetToUnclaimed: delete claim row -> fresh code next onboarding.
- offsite.Deprovision (idempotent) + OffsiteIdentifier + ClearProvisionedDescriptor.
- tenantsync.Deprovision + felhom-tenantsync.sh deprovision op (destroys ns +
  backup groups + token; shared user untouched; idempotent).
- web/customer_reset.go: GET reset -> inventory JSON; POST -> orchestration
  (external teardown FIRST, DB purge LAST; refuse-while-hosts; typed-id +
  separate escrow ack). Amber RESET card distinct from red Danger-zone Delete.
- Red-proofs: ack-gate + partial-failure resumability (both proven red);
  store ack-gating + journal round-trip; offsite idempotency + descriptor clear;
  RESET-card render. Green: build + vet + test.

hub/internal/web/server.go

@@ -508,6 +508,15 @@ func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		} else {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 		}
+	case strings.HasPrefix(path, "/configs/") && strings.HasSuffix(path, "/reset"):
+		// Customer RESET (v0.61.0): GET renders the confirm surface (live inventory), POST executes.
+		customerID := strings.TrimPrefix(path, "/configs/")
+		customerID = strings.TrimSuffix(customerID, "/reset")
+		if r.Method == http.MethodPost {
+			s.handleCustomerReset(w, r, customerID)
+		} else {
+			s.handleCustomerResetPreview(w, r, customerID)
+		}
 	case strings.HasPrefix(path, "/configs/"):
 		// Redirect old config detail URL to unified customer page
 		customerID := strings.TrimPrefix(path, "/configs/")