Merge branch 'dev' into feature/bugfix

Conflicts resolved in:
- src/app/clients/clients-view/ckyc-tab/ckyc-tab.component.html
- src/app/clients/clients-view/ckyc-tab/ckyc-tab.component.ts

Kept dev's CKYC architecture (upload dialog, real per-artefact endpoints)
and layered feature/bugfix's fixes on top: upload file validation,
missing-file badge, silent preview download, and image/PDF view button.
Also includes the CKYC "Image of Client" upload-state fix and the
client-change state-leak fix in the same component.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/clients/clients-view/ckyc-tab/ckyc-tab.component.scss

@@ -553,15 +553,21 @@
   margin: 0 0 12px;
 }
 
-.ckyc-file-row {
+.ckyc-missing {
+  margin-top: 14px;
   display: flex;
+  flex-direction: column;
+  gap: 10px;
   align-items: flex-start;
-  gap: 8px;
-  margin-bottom: 12px;
 }
 
-.ckyc-file-name-field {
-  flex: 1;
+.ckyc-uploading {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-top: 10px;
+  font-size: 12px;
+  color: #5f6368;
 }
 
 .ckyc-upload-error {
@@ -583,19 +589,6 @@
   }
 }
 
-.ckyc-upload-response {
-  margin-top: 12px;
-  padding: 10px 14px;
-  background-color: #e8f5e9;
-  border: 1px solid #a5d6a7;
-  border-radius: 8px;
-  font-size: 12px;
-
-  p {
-    margin: 4px 0;
-  }
-}
-
 @media (width <= 900px) {
   .ckyc-upload-grid {
     grid-template-columns: 1fr;
@@ -610,14 +603,6 @@
   .ckyc-upload-grid {
     grid-template-columns: 1fr;
   }
-
-  .ckyc-file-row {
-    flex-direction: column;
-  }
-
-  .ckyc-file-name-field {
-    width: 100%;
-  }
 }
 
 /* ===================== Already-available banners ===================== */
@@ -760,6 +745,34 @@
     letter-spacing: 0.3px;
   }
 
+  &__thumbs {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 10px;
+    flex-wrap: wrap;
+  }
+
+  &__dates {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    font-size: 11px;
+    color: #0f6e56;
+    flex-wrap: wrap;
+
+    span {
+      display: inline-flex;
+      align-items: center;
+      gap: 5px;
+    }
+
+    fa-icon {
+      color: #1d9e75;
+      font-size: 11px;
+    }
+  }
+
   &__thumb {
     width: 100px;
     height: 100px;