diff --git a/DOCS/ARCHITECTURE.md b/DOCS/ARCHITECTURE.md
index d91ab97..350ca87 100644
--- a/DOCS/ARCHITECTURE.md
+++ b/DOCS/ARCHITECTURE.md
@@ -1,6 +1,6 @@
 # Архитектура app-autotest — полный документ
 
-v1.0.65, 27.07.2026
+v1.0.66, 27.07.2026
 
 ---
 
diff --git a/DOCS/HISTORY.md b/DOCS/HISTORY.md
index b1f5ba2..1fe43e1 100644
--- a/DOCS/HISTORY.md
+++ b/DOCS/HISTORY.md
@@ -1,5 +1,16 @@
 # История разработки app-autotest
 
+# v1.0.66 (27.07.2026) — backend status resolver for operations
+
+### Что изменилось
+- В `site/routes/main.py` добавлен канонический резолвер статуса инстанса для `/api/operations/<svc_id>`.
+- Backend теперь отдаёт `status` для инстансов, а UI читает именно его вместо угадывания по `explainedStatus`.
+- В `site/templates/index.html` убрано раннее отображение «Готово» во время выполнения операции.
+
+### Что это чинит
+- Путаницу между `creating`, `running` и фактическим статусом в UI.
+- Ситуацию, когда фронтенд сам интерпретировал статусы и показывал не то состояние.
+
 ## v1.0.65 (27.07.2026) — cloud list pagination fix
 
 ### Что изменилось
diff --git a/site/app.py b/site/app.py
index 32ca3ff..97b435a 100644
--- a/site/app.py
+++ b/site/app.py
@@ -6,7 +6,7 @@ from routes.main import bp as main_bp
 from routes.api import bp as api_bp
 from routes.api_test import bp as api_test_bp
 
-VERSION = "1.0.65"
+VERSION = "1.0.66"
 
 app = Flask(__name__, template_folder="templates", static_folder="static")
 app.config["NUBES_API_ENDPOINT"] = os.getenv("NUBES_API_ENDPOINT", "https://lk-api-gateway-dev.ngcloud.ru/api/v1/svc")
diff --git a/site/routes/main.py b/site/routes/main.py
index dfb4942..6e00910 100644
--- a/site/routes/main.py
+++ b/site/routes/main.py
@@ -10,6 +10,21 @@ bp = Blueprint("main", __name__)
 AUTOTEST_PREFIX = "autotest-"
 
 
+def _resolve_instance_status(instance, tracked=None):
+    """Вернуть канонический статус инстанса для API и UI."""
+    tracked = tracked or {}
+    cloud_status = str(instance.get("explainedStatus") or "").strip()
+    display_name = str(instance.get("displayName") or "")
+
+    if cloud_status:
+        return cloud_status
+
+    if tracked and display_name.startswith(AUTOTEST_PREFIX):
+        return "creating"
+
+    return "unknown"
+
+
 def _mask(s):
     if not s or len(s) < 8:
         return ""
@@ -143,10 +158,18 @@ def api_operations(svc_id):
         tracked_uids = set(tracked_by_uid.keys())
         instances = get_instances(client)
         nubes_uids = {i["instanceUid"] for i in instances}
-        svc_instances = [i for i in instances
-            if i.get("instanceUid") in tracked_uids
-            and str(i.get("displayName", "")).startswith(AUTOTEST_PREFIX)
-            and i.get("explainedStatus") not in ("deleted",)]
+        svc_instances = []
+        for i in instances:
+            uid = i.get("instanceUid")
+            if uid not in tracked_uids:
+                continue
+            if not str(i.get("displayName", "")).startswith(AUTOTEST_PREFIX):
+                continue
+            if i.get("explainedStatus") in ("deleted",):
+                continue
+            item = dict(i)
+            item["status"] = _resolve_instance_status(item, tracked_by_uid.get(uid))
+            svc_instances.append(item)
         # Если Nubes уже не отдаёт tracked-инстанс после reload, добавляем его из трекера.
         for uid, t in tracked_by_uid.items():
             if uid not in nubes_uids:
@@ -155,7 +178,8 @@ def api_operations(svc_id):
                     "displayName": t["displayName"],
                     "serviceId": svc_id,
                     "svc": detail.get("svc", ""),
-                    "explainedStatus": "creating",
+                    "explainedStatus": "",
+                    "status": "creating",
                 })
         return jsonify({"svc": detail.get("svc", ""), "operations": ops, "instances": svc_instances})
     except Exception as e:
diff --git a/site/templates/index.html b/site/templates/index.html
index f5c1055..a4e2e7c 100644
--- a/site/templates/index.html
+++ b/site/templates/index.html
@@ -114,10 +114,11 @@ async function selectService(svcId){
 
     let html='';
     svcInstances.forEach(i=>{
-        const sc=i.explainedStatus==='running'?'badge-success':'';
+        const status=i.status||i.explainedStatus||'?';
+        const sc=status==='running'?'badge-success':'';
         html+=`<div class="inst-item" onclick="toggleInstance('${i.instanceUid}')" data-iuid="${i.instanceUid}">
             <span style="flex:1;">${i.displayName}</span>
-            <span class="badge ${sc}" style="font-size:9px;">${i.explainedStatus||'?'}</span>
+            <span class="badge ${sc}" style="font-size:9px;">${status}</span>
         </div>`;
         html+=`<div class="inst-ops" id="ops-${i.instanceUid}"></div>`;
     });
@@ -235,7 +236,7 @@ function setFinishedState(statusText, statusClass, statusError, statusDuration){
 function setRunningState(opName, displayName){
     const btn=document.getElementById('btn-test');
     const title=displayName || opName;
-    btn.textContent='Готово';
+    btn.textContent=opName+'...';
     document.getElementById('test-status').textContent=' ⏳ '+title+' выполняется...';
 }
 
@@ -307,10 +308,11 @@ async function refreshInstances(){
     svcInstances=newInsts;
     let html='';
     svcInstances.forEach(i=>{
-        const sc=i.explainedStatus==='running'?'badge-success':'';
+        const status=i.status||i.explainedStatus||'?';
+        const sc=status==='running'?'badge-success':'';
         html+=`<div class="inst-item" onclick="toggleInstance('${i.instanceUid}')" data-iuid="${i.instanceUid}">
             <span style="flex:1;">${i.displayName}</span>
-            <span class="badge ${sc}" style="font-size:9px;">${i.explainedStatus||'?'}</span>
+            <span class="badge ${sc}" style="font-size:9px;">${status}</span>
         </div>`;
         html+=`<div class="inst-ops" id="ops-${i.instanceUid}"></div>`;
     });