fix: clean up Studio warning log formatting (#6265)

* feat: queue chat prompts during generation

* fix: address prompt queue review edge cases

* fix: harden queued prompt dispatch

* fix: track queued prompt run state by thread

* fix: preserve prompt queue ordering

* fix: isolate prompt queue on new chat

* fix: clean up Studio warning log formatting

* Fix export log markup

---------

Co-authored-by: wasimysaid <wasimysdev@gmail.com>

studio/frontend/src/features/export/components/export-run-panel.tsx

@@ -30,6 +30,7 @@ import { useEffect, useRef, useState } from "react";
 import { useShallow } from "zustand/react/shallow";
 import { EXPORT_METHODS, type ExportMethod } from "../constants";
 import type { ExportLogEntry } from "../api/export-api";
+import { getExportLogLineClass } from "../lib/log-style";
 import {
   selectExportProgressPercent,
   useExportRuntimeStore,
@@ -520,22 +521,16 @@ export function ExportRunPanel(props: ExportRunPanelProps) {
                     </span>
                   </div>
                 ) : (
-                  <pre className="whitespace-pre-wrap break-words">
+                  <div className="whitespace-pre-wrap break-words">
                     {run.logLines.map((entry, idx) => (
                       <div
                         key={idx}
-                        className={
-                          entry.stream === "stderr"
-                            ? "text-rose-300/90"
-                            : entry.stream === "status"
-                              ? "text-sky-300/90"
-                              : ""
-                        }
+                        className={getExportLogLineClass(entry)}
                       >
                         {formatLogLine(entry)}
                       </div>
                     ))}
-                  </pre>
+                  </div>
                 )}
               </div>
             </div>

studio/frontend/src/features/export/lib/log-style.ts

@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: AGPL-3.0-only
+// Copyright 2026-present the Unsloth AI Inc. team. All rights reserved. See /studio/LICENSE.AGPL-3.0
+
+import type { ExportLogEntry } from "../api/export-api";
+
+type ExportLogTone = "stdout" | "stderr" | "status" | "warning";
+
+const WARNING_LINE_PATTERNS = [
+  /Skipping import of cpp extensions due to incompatible torch version/i,
+  /Please see GitHub issue #2919 for more info/i,
+  /torch_dtype is deprecated!\s*Use dtype instead!/i,
+] as const;
+
+function isWarningLine(line: string): boolean {
+  return WARNING_LINE_PATTERNS.some((pattern) => pattern.test(line));
+}
+
+export function getExportLogTone(entry: ExportLogEntry): ExportLogTone {
+  if (entry.stream === "status") {
+    return "status";
+  }
+  if (isWarningLine(entry.line)) {
+    return "warning";
+  }
+  return entry.stream === "stderr" ? "stderr" : "stdout";
+}
+
+export function getExportLogLineClass(entry: ExportLogEntry): string {
+  const tone = getExportLogTone(entry);
+  if (tone === "stderr") {
+    return "text-rose-300/90";
+  }
+  if (tone === "status") {
+    return "text-sky-300/90";
+  }
+  if (tone === "warning") {
+    return "text-status-warning";
+  }
+  return "";
+}

studio/install_python_stack.py

@@ -20,6 +20,7 @@ import subprocess
 import sys
 import sysconfig
 import tempfile
+import textwrap
 import urllib.request
 from pathlib import Path
 
@@ -1401,6 +1402,7 @@ VERBOSE: bool = os.environ.get("UNSLOTH_VERBOSE", "0") == "1"
 # Update _TOTAL if you add/remove steps in install_python_stack().
 _STEP: int = 0
 _TOTAL: int = 0  # set at runtime in install_python_stack() based on platform
+_PROGRESS_LINE_ACTIVE: bool = False
 
 # -- Paths --------------------------------------------------------------
 SCRIPT_DIR = Path(__file__).resolve().parent
@@ -1486,6 +1488,7 @@ _HAS_COLOR = _stdout_supports_color()
 #   2-space indent, 15-char label (dim), then value.
 _LABEL = "deps"
 _COL = 15
+_INDENT = 2
 
 
 def _green(msg: str) -> str:
@@ -1517,15 +1520,38 @@ def _step(
     color_fn = None,
 ) -> None:
     """Print a single step line in the column format."""
+    global _PROGRESS_LINE_ACTIVE
     if color_fn is None:
         color_fn = _green
     padded = label[:_COL]
-    _safe_print(f"  {_dim(padded)}{' ' * (_COL - len(padded))}{color_fn(value)}")
+    plain_prefix_width = _INDENT + _COL
+    prefix = f"{' ' * _INDENT}{_dim(padded)}{' ' * (_COL - len(padded))}"
+    wrap_width = max(
+        24,
+        shutil.get_terminal_size((100, 20)).columns - plain_prefix_width,
+    )
+    lines = textwrap.wrap(
+        value,
+        width = wrap_width,
+        break_long_words = False,
+        break_on_hyphens = False,
+    ) or [""]
+    if _PROGRESS_LINE_ACTIVE and not VERBOSE:
+        try:
+            sys.stdout.write("\n")
+            sys.stdout.flush()
+        except OSError:
+            pass
+        _PROGRESS_LINE_ACTIVE = False
+    _safe_print(f"{prefix}{color_fn(lines[0])}")
+    continuation_prefix = " " * plain_prefix_width
+    for line in lines[1:]:
+        _safe_print(f"{continuation_prefix}{color_fn(line)}")
 
 
 def _progress(label: str) -> None:
     """Print an in-place progress bar aligned to the step column layout."""
-    global _STEP
+    global _STEP, _PROGRESS_LINE_ACTIVE
     _STEP += 1
     if VERBOSE:
         return
@@ -1537,6 +1563,7 @@ def _progress(label: str) -> None:
     try:
         sys.stdout.write(f"\r  {_dim(_LABEL)}{pad}[{bar}] {_STEP:2}/{_TOTAL}  {label:<20}{end}")
         sys.stdout.flush()
+        _PROGRESS_LINE_ACTIVE = end == ""
     except OSError:
         pass