diff --git a/packages/sandbox/daemon-go/internal/probe/probe.go b/packages/sandbox/daemon-go/internal/probe/probe.go
index 68ccb8f53a..4c2361bb3b 100644
--- a/packages/sandbox/daemon-go/internal/probe/probe.go
+++ b/packages/sandbox/daemon-go/internal/probe/probe.go
@@ -27,12 +27,6 @@ type State struct {
 	Status      string
 	Port        int
 	HtmlSupport bool
-	// HTTPStatus is the status code of the last successful probe request, or 0
-	// when nothing answered. A dev server that answers every request with 5xx
-	// is reachable but useless — `Status` alone cannot tell those apart, and a
-	// warm-pool pod handed over with a half-built framework directory looks
-	// perfectly online without this.
-	HTTPStatus int
 }
 
 type Deps struct {
@@ -137,7 +131,7 @@ func (p *Prober) tick() {
 	}
 	if up {
 		p.consecutiveFailures = 0
-		next := State{Status: StatusOnline, Port: p.state.Port, HtmlSupport: isHtml, HTTPStatus: status}
+		next := State{Status: StatusOnline, Port: p.state.Port, HtmlSupport: isHtml}
 		prevStatus := p.state.Status
 		p.applyLocked(next)
 		if prevStatus == StatusBooting && p.deps.OnLog != nil {
diff --git a/packages/sandbox/daemon-go/internal/probe/probe_status_test.go b/packages/sandbox/daemon-go/internal/probe/probe_status_test.go
deleted file mode 100644
index 1bf4076c2e..0000000000
--- a/packages/sandbox/daemon-go/internal/probe/probe_status_test.go
+++ /dev/null
@@ -1,66 +0,0 @@
-package probe
-
-import (
-	"net/http"
-	"net/http/httptest"
-	"net/url"
-	"strconv"
-	"testing"
-	"time"
-)
-
-// A dev server answering every request with 500 is reachable, so Status stays
-// online — but HTTPStatus must carry the code so a caller can tell the two
-// apart. This is the warm-pool handover bug: `.faststore/src/pages` missing,
-// every route 500, watchdog silent.
-func TestStateCarriesHTTPStatus(t *testing.T) {
-	for _, code := range []int{200, 500} {
-		srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-			w.Header().Set("Content-Type", "text/html")
-			w.WriteHeader(code)
-		}))
-		port := serverPort(t, srv.URL)
-
-		got := make(chan State, 8)
-		p := Start(Deps{
-			GetPort:  func() int { return port },
-			OnChange: func(s State) { got <- s },
-			Fast:     5 * time.Millisecond,
-			Slow:     5 * time.Millisecond,
-		})
-
-		var seen State
-		deadline := time.After(3 * time.Second)
-	wait:
-		for {
-			select {
-			case s := <-got:
-				if s.Status == StatusOnline {
-					seen = s
-					break wait
-				}
-			case <-deadline:
-				t.Fatalf("code %d: never reported online", code)
-			}
-		}
-		p.Stop()
-		srv.Close()
-
-		if seen.HTTPStatus != code {
-			t.Fatalf("code %d: HTTPStatus = %d, want %d", code, seen.HTTPStatus, code)
-		}
-	}
-}
-
-func serverPort(t *testing.T, raw string) int {
-	t.Helper()
-	u, err := url.Parse(raw)
-	if err != nil {
-		t.Fatal(err)
-	}
-	n, err := strconv.Atoi(u.Port())
-	if err != nil {
-		t.Fatal(err)
-	}
-	return n
-}
diff --git a/packages/sandbox/daemon-go/main.go b/packages/sandbox/daemon-go/main.go
index d8b3819d6c..84de432e62 100644
--- a/packages/sandbox/daemon-go/main.go
+++ b/packages/sandbox/daemon-go/main.go
@@ -457,14 +457,6 @@ func envDuration(name string, def, min time.Duration) time.Duration {
 	return def
 }
 
-// restartOn5xx gates treating an all-5xx dev server as dead. Default off: a
-// user's app can legitimately 5xx from its own bug, and restarting that fixes
-// nothing, so this ships dormant and is enabled per-deployment.
-func restartOn5xx() bool {
-	v := strings.ToLower(strings.TrimSpace(os.Getenv("DEV_RESTART_ON_5XX")))
-	return v == "1" || v == "true"
-}
-
 // envInt reads an int from env, clamped to at least min, def when unset/bad.
 func envInt(name string, def, min int) int {
 	if v := os.Getenv(name); v != "" {
@@ -492,16 +484,7 @@ func (d *daemon) devWatchTick() {
 	portKnown := sniffed != 0 || lastRunning != 0
 	// Read synchronously, not via a mirror an out-of-order callback could
 	// leave stale (see probe.Prober.Current).
-	probeState := d.prober.Current()
-	serving := probeState.Status == probe.StatusOnline
-	if serving && restartOn5xx() && probeState.HTTPStatus >= 500 {
-		// Reachable but serving nothing usable. A warm-pool pod has been handed
-		// over with a half-built framework directory (every route 5xx) and the
-		// watchdog sat it out, because "answered the request" was the whole
-		// liveness test. Treating that as dead lets the existing grace window
-		// and MaxRestarts budget rebuild it exactly once.
-		serving = false
-	}
+	serving := d.prober.Current().Status == probe.StatusOnline
 
 	d.devWatchMu.Lock()
 	action := d.devTracker.Observe(devwatch.Snapshot{