fix(dossiers-ngi): update README and scripts for branch status

sites/dossiers.ngi.hacktivism.ch/_cascade/bar.css

@@ -36,7 +36,7 @@ html {
 }
 a.cascade-tree-row {
   display: grid;
-  grid-template-columns: minmax(6rem, 1fr) 7.2rem 10.5rem 4.4rem 3.6rem;
+  grid-template-columns: 1.05rem minmax(6rem, 1fr) 7.2rem 10.5rem 4.4rem 3.6rem;
   column-gap: 0.55rem;
   align-items: baseline;
   color: #7ec8ff;
@@ -89,11 +89,22 @@ a.cascade-tree-row.is-active:hover {
     max-width: 100%;
   }
   a.cascade-tree-row {
-    grid-template-columns: minmax(5rem, 1fr) 5.6rem 8.4rem 3.6rem 3rem;
+    grid-template-columns: 0.9rem minmax(5rem, 1fr) 5.6rem 8.4rem 3.6rem 3rem;
     column-gap: 0.35rem;
   }
 }
 
+.cascade-mark {
+  text-align: center;
+  font-weight: 700;
+  line-height: 1;
+}
+.cascade-bar .cascade-ok {
+  color: #3fb950;
+}
+.cascade-bar .cascade-fail {
+  color: #f85149;
+}
 .cascade-bar .diff-plus {
   color: #3fb950;
   font-weight: 600;

sites/dossiers.ngi.hacktivism.ch/_cascade/bar.js

@@ -59,6 +59,31 @@
     return sec || at;
   }
 
+  function freezeOk(row) {
+    return row && row.freeze_ok === true;
+  }
+
+  function freezeLabel(row) {
+    if (freezeOk(row)) return "freeze ok";
+    var err = row && row.freeze_error ? String(row.freeze_error) : "";
+    return err ? "freeze failed: " + err : "freeze failed";
+  }
+
+  function freezeMarkHtml(row) {
+    var ok = freezeOk(row);
+    return (
+      '<span class="cascade-mark ' +
+      (ok ? "cascade-ok" : "cascade-fail") +
+      '" title="' +
+      esc(freezeLabel(row)) +
+      '" aria-label="' +
+      esc(freezeLabel(row)) +
+      '">' +
+      (ok ? "✓" : "✗") +
+      "</span>"
+    );
+  }
+
   function plusHtml(row) {
     if (row.vs_parent_plus != null) {
       var p = Number(row.vs_parent_plus);
@@ -111,6 +136,8 @@
       (tip ? " @ " + tip : "") +
       (tipTime ? " tip=" + shortTime(tipTime) : "") +
       (built ? " build=" + built : "") +
+      " " +
+      freezeLabel(row) +
       vs
     );
   }
@@ -191,6 +218,11 @@
       else a.removeAttribute("data-default");
       setText(a.querySelector(".cascade-when"), shortTime(row.tip_time || ""));
       setText(a.querySelector(".cascade-built"), builtText(row));
+      var markEl = a.querySelector(".cascade-mark");
+      if (markEl) {
+        var markHtml = freezeMarkHtml(row);
+        if (markEl.outerHTML !== markHtml) markEl.outerHTML = markHtml;
+      }
       var plusEl = a.querySelector(".cascade-plus");
       if (plusEl) {
         var ph = plusHtml(row);
@@ -256,6 +288,7 @@
           ' title="' +
           esc(rowTitle(row)) +
           '">' +
+          freezeMarkHtml(row) +
           '<span class="cascade-name">' +
           esc(prefix) +
           "<code>" +