feat(ui): show dynamic output summary in tool call bubble

Display tool output in the timeline bubble header, truncating with ellipsis and falling back to params if output is unavailable. UI now handles overflow without fixed truncation.

Author: phodal

mpp-idea/src/main/kotlin/cc/unitmesh/devins/idea/components/timeline/IdeaToolCallBubble.kt

@@ -13,8 +13,10 @@ import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clipToBounds
 import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import cc.unitmesh.agent.render.TimelineItem
@@ -68,7 +70,7 @@ fun IdeaToolCallBubble(
             .padding(8.dp)
     ) {
         Column {
-            // Header row: Status + Tool name + Summary + Expand icon
+            // Header row: Status + Tool name + Output (dynamic) + Time + Expand icon
             Row(
                 modifier = Modifier
                     .fillMaxWidth()
@@ -99,17 +101,17 @@ fun IdeaToolCallBubble(
                     }
                 )
 
-                // Tool name
+                // Tool name (fixed width, no shrink)
                 Text(
                     text = item.toolName,
                     style = JewelTheme.defaultTextStyle.copy(fontWeight = FontWeight.Bold),
-                    modifier = Modifier.weight(1f)
+                    maxLines = 1
                 )
 
-                // Summary (truncated params as summary)
-                if (hasParams && !expanded) {
+                // Output summary (dynamic width, fills remaining space)
+                if (hasOutput && !expanded) {
                     Text(
-                        text = "-> ${item.params.take(40)}${if (item.params.length > 40) "..." else ""}",
+                        text = "-> ${item.output?.replace("\n", " ")?.trim() ?: ""}",
                         style = JewelTheme.defaultTextStyle.copy(
                             fontSize = 12.sp,
                             color = when {
@@ -118,8 +120,32 @@ fun IdeaToolCallBubble(
                                 else -> JewelTheme.globalColors.text.info
                             }
                         ),
-                        maxLines = 1
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis,
+                        modifier = Modifier
+                            .weight(1f)
+                            .clipToBounds()
                     )
+                } else if (!expanded) {
+                    // Show params as fallback when no output
+                    if (hasParams) {
+                        Text(
+                            text = "-> ${item.params.replace("\n", " ").trim()}",
+                            style = JewelTheme.defaultTextStyle.copy(
+                                fontSize = 12.sp,
+                                color = JewelTheme.globalColors.text.info
+                            ),
+                            maxLines = 1,
+                            overflow = TextOverflow.Ellipsis,
+                            modifier = Modifier
+                                .weight(1f)
+                                .clipToBounds()
+                        )
+                    } else {
+                        Spacer(modifier = Modifier.weight(1f))
+                    }
+                } else {
+                    Spacer(modifier = Modifier.weight(1f))
                 }
 
                 // Execution time (if available)
@@ -376,14 +402,8 @@ private fun copyToClipboard(text: String) {
 
 /**
  * Format tool output for better readability.
- * Returns output as-is to avoid breaking valid JSON/table formats.
+ * Returns output as-is to preserve valid JSON/table formats.
+ * No fixed truncation - UI handles overflow dynamically.
  */
-private fun formatToolOutput(output: String): String {
-    return when {
-        output.contains("|") -> output // Table format
-        output.contains("\n") -> output // Already formatted
-        output.length > 100 -> "${output.take(100)}..." // Truncate long single-line output
-        else -> output
-    }
-}
+private fun formatToolOutput(output: String): String = output