fix: no empty toast at generation start (a cleared pipeline note became a wordless bubble); toasts with no words are never shown

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/ui/composer/elements/status.js

@@ -135,6 +135,8 @@ function toastStack() {
 
 for (const tone of ["info", "good", "warn", "danger"]) {
   define("toast", tone, ({ text, action, duration = 3200 } = {}) => {
+    // Nothing to say: nothing shown. An empty bubble reads as a message that went missing.
+    if (!String(text ?? "").trim() && !(action && action.node)) return { node: null, setText() {}, destroy() {} };
     const node = el("div", { cls: ["cx-toast", `cx-toast-${tone}`],
       attrs: { role: tone === "danger" ? "alert" : "status" }, children: [
         el("span", { cls: "cx-toast-text", text }),

app/ui/composer/tests/overlays.test.js

@@ -646,3 +646,10 @@ test("closing a window while a field in it is focused still commits what was typ
   win.close();
   assert.equal(got, "portraits");
 });
+
+test("a toast with no words is not shown at all", () => {
+  const before = document.querySelectorAll(".cx-toast").length;
+  for (const text of [null, undefined, "", "   "]) composer.toast.warn({ text }).destroy();
+  composer.toast.warn({ text: null });
+  assert.equal(document.querySelectorAll(".cx-toast").length, before);
+});

app/ui/features/generate/index.js

@@ -21,9 +21,9 @@ export default {
   setup({ host, app }) {
     const p = app.project, g = app.generate;
     let said = false;
-    const tell = (text) => { said = true; c.toast.warn({ text }); };
+    const tell = (text) => { if (!text) return; said = true; c.toast.warn({ text }); };       // no words, no toast: an empty one read as a message gone missing
     let current = 0;                                    // the scene being queued: a refusal said meanwhile names it
-    g.on("say", (t) => tell(current ? `Scene ${current}: ${t}` : t)); g.on("warn", tell);
+    g.on("say", (t) => tell(t && (current ? `Scene ${current}: ${t}` : t))); g.on("warn", tell);
     g.on("hold", () => { held = true; draw(); }); g.on("release", () => { held = false; draw(); });   // while the page asks ComfyUI whether a run is already going          // the pipeline check's refusals: said where the person is looking
     let busy = false, stopped = false, held = false;