fix: resolve rare SIGFPE, fix orphan expired joins blocking workers from reallocating

node/consensus/global/event_distributor.go

@@ -766,6 +766,21 @@ func (e *GlobalConsensusEngine) reconcileWorkerAllocations(
 				continue
 			}
 
+			// Expired joins (implicitly rejected) and expired leaves
+			// (implicitly confirmed) should also be cleared immediately —
+			// the allocation will never be confirmed/completed and the
+			// worker is stuck waiting for a state change that cannot come.
+			if alloc.Status == typesconsensus.ProverStatusJoining &&
+				frameNumber > alloc.JoinFrameNumber+pendingFilterGraceFrames {
+				rejectedFilters[string(alloc.ConfirmationFilter)] = struct{}{}
+				continue
+			}
+			if alloc.Status == typesconsensus.ProverStatusLeaving &&
+				frameNumber > alloc.LeaveFrameNumber+pendingFilterGraceFrames {
+				rejectedFilters[string(alloc.ConfirmationFilter)] = struct{}{}
+				continue
+			}
+
 			key := string(alloc.ConfirmationFilter)
 			worker, ok := filtersToWorkers[key]
 			if !ok {

node/main.go

@@ -12,6 +12,7 @@ import (
 	"fmt"
 	"log"
 	"math/big"
+	"net"
 	"net/http"
 	npprof "net/http/pprof"
 	"os"
@@ -46,6 +47,12 @@ import (
 	qruntime "source.quilibrium.com/quilibrium/monorepo/utils/runtime"
 )
 
+func init() {
+	// Use the pure-Go DNS resolver to avoid SIGFPE crashes in cgo-based
+	// system resolvers (observed on some glibc/musl configurations).
+	net.DefaultResolver = &net.Resolver{PreferGo: true}
+}
+
 var (
 	configDirectory = flag.String(
 		"config",