Fix more PR comments

Author: wenli-cai

workflow-trace-viewer/docs/demo.gif

@@ -21,7 +21,7 @@ internal data class NodeUpdate(
         past == null -> NodeState.NEW
         current.props != past.props -> NodeState.PROPS_CHANGED
         current.state != past.state -> NodeState.STATE_CHANGED
-        else -> NodeState.CHILDREN_CHANGED
+        else -> NodeState.RENDERED
       }
 
       return NodeUpdate(current, past, state)
@@ -33,6 +33,6 @@ internal enum class NodeState(val color: Color) {
   NEW(Color(0x804CAF50)), // green
   STATE_CHANGED(Color(0xFFE57373)), // red
   PROPS_CHANGED(Color(0xFFFF8A65)), // orange
-  CHILDREN_CHANGED(Color(0x802196F3)), // blue
+  RENDERED(Color(0x802196F3)), // blue
   UNCHANGED(Color.LightGray.copy(alpha = 0.3f)),
 }

workflow-trace-viewer/docs/file_mode.gif

@@ -62,7 +62,6 @@ internal fun RightInfoPanel(
         .clip(CircleShape)
         .background(Color.White)
         .padding(8.dp)
-        .size(40.dp)
         .align(Alignment.Top)
     ) {
       Icon(

workflow-trace-viewer/docs/live_mode.gif

@@ -1,6 +1,7 @@
 package com.squareup.workflow1.traceviewer.ui.control
 
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.widthIn
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material.Button
 import androidx.compose.material.ButtonDefaults.buttonColors
@@ -24,29 +25,34 @@ internal fun FileDump(
   trace: String,
   modifier: Modifier = Modifier
 ) {
+  var filePath by remember { mutableStateOf("") }
   var clicked by remember { mutableStateOf(false) }
   Button(
-    modifier = modifier.padding(16.dp),
+    modifier = modifier
+      .padding(16.dp)
+      .widthIn(max = 300.dp),
     shape = CircleShape,
     colors = buttonColors(Color.Black),
     onClick = {
       clicked = true
-      writeToFile(trace)
+      filePath = writeToFile(trace)
     }
   ) {
     val text = if (clicked) {
-      "Trace saved to Downloads"
+      "Trace saved to $filePath"
     } else {
       "Save trace to file"
     }
     Text(
       text = text,
-      color = Color.White
+      color = Color.White,
+      maxLines = 3,
+      softWrap = true
     )
   }
 }
 
-private fun writeToFile(trace: String) {
+private fun writeToFile(trace: String): String{
   val timestamp = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyyMMdd_HHmmss"))
   val home = System.getProperty("user.home")
   val path = "$home/Downloads/workflow-trace_$timestamp.json".toPath()
@@ -58,4 +64,6 @@ private fun writeToFile(trace: String) {
       bufferedSink.writeUtf8("]")
     }
   }
+
+  return path.toString()
 }