muse-chat-api.py upload: verify chip by own-text (React swaps the input)

bin/muse-chat-api.py

@@ -323,14 +323,17 @@ def cmd_upload(ws, filepath, message=None, dry_run=False):
     cdp_call(ws, "DOM.setFileInputFiles",
              {"nodeId": node_id, "files": [os.path.abspath(filepath)]})
     time.sleep(2)
-    # Read-back: the attachment preview must appear.
+    # Read-back: the attachment chip must appear. Match on the
+    # element's OWN text: React swaps the file input after change, so
+    # input.files is unreliable, and innerText on ancestors over-matches.
     base = os.path.basename(filepath)
     preview = ev(ws, """(() => {
       const needle = %s;
-      const hits = [...document.querySelectorAll('*')].filter(e => {
-        const t = e.innerText || '';
-        return t.length < 300 && t.includes(needle);
-      }).map(e => e.innerText.slice(0, 120));
+      const own = e => [...e.childNodes].filter(n => n.nodeType === 3)
+        .map(n => n.nodeValue).join('');
+      const hits = [...document.querySelectorAll('*')]
+        .filter(e => own(e).includes(needle))
+        .map(e => e.tagName + ': ' + own(e).slice(0, 80));
       return JSON.stringify(hits.slice(0, 5));
     })()""" % json.dumps(base))
     print("preview: %s" % preview)