hub v0.155.0: the floor can never deliver a withdrawn controller build (R-1085); RomM/Ghost evidence

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

hub/internal/api/spoiled_floor_ack_test.go

@@ -0,0 +1,53 @@
+package api
+
+import (
+	"bytes"
+	"encoding/json"
+	"log"
+	"net/http"
+	"strings"
+	"testing"
+)
+
+// R-1085 over the wire — Scenario C through the PRODUCTION path (the real report handler → ResolveManagedFloor):
+// a box is never told to install a withdrawn build, and the hub says why in ONE [WARN] naming the tag, not one per
+// report. Red-proof: delete the SpoiledControllerTag block in store.ResolveManagedFloor → the ACK carries 0.316.3.
+func TestReportACK_NeverServesAWithdrawnBuild(t *testing.T) {
+	h, st, _ := newTestHandler(t)
+	var logs bytes.Buffer
+	h.logger = log.New(&logs, "", 0)
+	ack := func() (interface{}, bool) {
+		rr := do(h, http.MethodPost, "/report", globalKey, `{"customer_id":"c"}`)
+		if rr.Code != http.StatusOK {
+			t.Fatalf("report status = %d", rr.Code)
+		}
+		var m map[string]interface{}
+		_ = json.Unmarshal(rr.Body.Bytes(), &m)
+		v, ok := m["min_controller_version"]
+		return v, ok
+	}
+
+	// A value stored the way an old hub (no form refusal) would have stored it.
+	if err := st.SetGlobalMinControllerVersion("0.316.3"); err != nil {
+		t.Fatal(err)
+	}
+	for i := 0; i < 3; i++ {
+		if v, ok := ack(); ok {
+			t.Fatalf("report %d: the ACK must OMIT a withdrawn floor, got %v", i, v)
+		}
+	}
+	if n := strings.Count(logs.String(), "[WARN] managed floor HELD for c:"); n != 1 {
+		t.Errorf("want exactly ONE [WARN] across three reports, got %d:\n%s", n, logs.String())
+	}
+	if !strings.Contains(logs.String(), "0.316.3") || !strings.Contains(logs.String(), "WITHDRAWN") {
+		t.Errorf("the [WARN] must name the tag and say withdrawn:\n%s", logs.String())
+	}
+
+	// The control, on the same handler: an ordinary floor is served.
+	if err := st.SetGlobalMinControllerVersion("0.317.0"); err != nil {
+		t.Fatal(err)
+	}
+	if v, ok := ack(); !ok || v != "0.317.0" {
+		t.Fatalf("an ordinary floor must be served, got %v (present=%v)", v, ok)
+	}
+}