Merge remote-tracking branch 'origin/main' into pr-5748-head

install.ps1

@@ -799,9 +799,11 @@ exit 0
             # even when install.ps1 is executed from PowerShell 7.
             $utf8Bom = New-Object System.Text.UTF8Encoding($true)
             [System.IO.File]::WriteAllText($launcherPs1, $launcherContent, $utf8Bom)
+            # shell.Run(cmd, 0, ...) already hides the window, so -WindowStyle Hidden
+            # is redundant; omitting it trims an AV-heuristic token (Kaspersky FP).
             $vbsContent = @"
 Set shell = CreateObject("WScript.Shell")
-cmd = "powershell -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -File ""$launcherPs1"""
+cmd = "powershell -NoProfile -ExecutionPolicy Bypass -File ""$launcherPs1"""
 shell.Run cmd, 0, False
 "@
             # WSH handles UTF-16LE reliably for .vbs files with non-ASCII paths.
@@ -1926,7 +1928,7 @@ shell.Run cmd, 0, False
         if ($SkipTorch) {
             # No-torch: install unsloth + unsloth-zoo with --no-deps, then
             # runtime deps (typer, safetensors, transformers, etc.) with --no-deps.
-            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --no-deps --reinstall-package unsloth --reinstall-package unsloth-zoo "unsloth>=2026.6.5" unsloth-zoo }
+            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --no-deps --reinstall-package unsloth --reinstall-package unsloth-zoo "unsloth>=2026.6.7" unsloth-zoo }
             if ($baseInstallExit -eq 0) {
                 # Resolve pydantic WITH deps so pip pins pydantic-core
                 # to the matching version (no-torch-runtime.txt below
@@ -1940,7 +1942,7 @@ shell.Run cmd, 0, False
                 }
             }
         } else {
-            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --reinstall-package unsloth --reinstall-package unsloth-zoo "unsloth>=2026.6.5" unsloth-zoo }
+            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --reinstall-package unsloth --reinstall-package unsloth-zoo "unsloth>=2026.6.7" unsloth-zoo }
         }
         if ($baseInstallExit -ne 0) {
             Write-Host "[ERROR] Failed to install unsloth (exit code $baseInstallExit)" -ForegroundColor Red
@@ -1987,7 +1989,7 @@ shell.Run cmd, 0, False
         if ($SkipTorch) {
             # No-torch: install unsloth + unsloth-zoo with --no-deps, then
             # runtime deps (typer, safetensors, transformers, etc.) with --no-deps.
-            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --no-deps --upgrade-package unsloth --upgrade-package unsloth-zoo "unsloth>=2026.6.5" unsloth-zoo }
+            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --no-deps --upgrade-package unsloth --upgrade-package unsloth-zoo "unsloth>=2026.6.7" unsloth-zoo }
             if ($baseInstallExit -eq 0) {
                 # Same pydantic-with-deps trick as the migrated branch.
                 $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython pydantic }
@@ -1999,7 +2001,7 @@ shell.Run cmd, 0, False
                 }
             }
         } elseif ($StudioLocalInstall) {
-            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --upgrade-package unsloth "unsloth>=2026.6.5" unsloth-zoo }
+            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --upgrade-package unsloth "unsloth>=2026.6.7" unsloth-zoo }
         } else {
             $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --upgrade-package unsloth -- "$PackageName" }
         }
@@ -2027,7 +2029,7 @@ shell.Run cmd, 0, False
         Write-TauriLog "STEP" "Installing unsloth"
         substep "installing unsloth (this may take a few minutes)..."
         if ($StudioLocalInstall) {
-            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython unsloth-zoo "unsloth>=2026.6.5" --torch-backend=auto }
+            $baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython unsloth-zoo "unsloth>=2026.6.7" --torch-backend=auto }
             if ($baseInstallExit -ne 0) {
                 Write-Host "[ERROR] Failed to install unsloth (exit code $baseInstallExit)" -ForegroundColor Red
                 return (Exit-InstallFailure "Failed to install unsloth (exit code $baseInstallExit)" $baseInstallExit)

install.sh

@@ -2432,7 +2432,7 @@ if [ "$_MIGRATED" = true ]; then
         # to prevent transitive torch resolution.
         run_install_cmd "install unsloth (migrated no-torch)" uv pip install --python "$_VENV_PY" --no-deps \
             --reinstall-package unsloth --reinstall-package unsloth-zoo \
-            "unsloth>=2026.6.5" unsloth-zoo
+            "unsloth>=2026.6.7" unsloth-zoo
         # Resolve pydantic WITH deps so pip pins pydantic-core to the
         # matching version (no-torch-runtime.txt below is --no-deps).
         # All transitive deps are torch-free.
@@ -2445,7 +2445,7 @@ if [ "$_MIGRATED" = true ]; then
     else
         run_install_cmd "install unsloth (migrated)" uv pip install --python "$_VENV_PY" \
             --reinstall-package unsloth --reinstall-package unsloth-zoo \
-            "unsloth>=2026.6.5" unsloth-zoo
+            "unsloth>=2026.6.7" unsloth-zoo
     fi
     if [ "$STUDIO_LOCAL_INSTALL" = true ]; then
         substep "overlaying local repo (editable)..."
@@ -2649,7 +2649,7 @@ elif [ -n "$TORCH_INDEX_URL" ]; then
         # runtime deps (typer, safetensors, transformers, etc.) with --no-deps.
         run_install_cmd "install unsloth (no-torch)" uv pip install --python "$_VENV_PY" --no-deps \
             --upgrade-package unsloth --upgrade-package unsloth-zoo \
-            "unsloth>=2026.6.5" unsloth-zoo
+            "unsloth>=2026.6.7" unsloth-zoo
         # Same pydantic-with-deps trick as the migrated branch.
         run_install_cmd "install pydantic (with deps for compatible core)" \
             uv pip install --python "$_VENV_PY" pydantic
@@ -2667,7 +2667,7 @@ elif [ -n "$TORCH_INDEX_URL" ]; then
         fi
     elif [ "$STUDIO_LOCAL_INSTALL" = true ]; then
         run_install_cmd "install unsloth (local)" uv pip install --python "$_VENV_PY" \
-            --upgrade-package unsloth "unsloth>=2026.6.5" unsloth-zoo
+            --upgrade-package unsloth "unsloth>=2026.6.7" unsloth-zoo
         substep "overlaying local repo (editable)..."
         run_install_cmd "overlay local repo" uv pip install --python "$_VENV_PY" -e "$_REPO_ROOT" --no-deps
         substep "overlaying unsloth-zoo from git main..."
@@ -2699,7 +2699,7 @@ else
     tauri_log "STEP" "Installing Unsloth"
     substep "installing unsloth (this may take a few minutes)..."
     if [ "$STUDIO_LOCAL_INSTALL" = true ]; then
-        run_install_cmd "install unsloth (auto torch backend)" uv pip install --python "$_VENV_PY" unsloth-zoo "unsloth>=2026.6.5" --torch-backend=auto
+        run_install_cmd "install unsloth (auto torch backend)" uv pip install --python "$_VENV_PY" unsloth-zoo "unsloth>=2026.6.7" --torch-backend=auto
         substep "overlaying local repo (editable)..."
         run_install_cmd "overlay local repo" uv pip install --python "$_VENV_PY" -e "$_REPO_ROOT" --no-deps
         substep "overlaying unsloth-zoo from git main..."

pyproject.toml

@@ -71,7 +71,7 @@ triton = [
 ]
 
 huggingfacenotorch = [
-    "unsloth_zoo>=2026.6.4",
+    "unsloth_zoo>=2026.6.5",
     "wheel>=0.42.0",
     "packaging",
     "numpy",
@@ -92,7 +92,7 @@ huggingfacenotorch = [
 ]
 huggingface = [
     "unsloth[huggingfacenotorch]",
-    "unsloth_zoo>=2026.6.4",
+    "unsloth_zoo>=2026.6.5",
     "torchvision",
     "unsloth[triton]",
 ]
@@ -582,7 +582,7 @@ colab-ampere-torch220 = [
     "flash-attn>=2.6.3 ; ('linux' in sys_platform)",
 ]
 colab-new = [
-    "unsloth_zoo>=2026.6.4",
+    "unsloth_zoo>=2026.6.5",
     "packaging",
     "tyro",
     "transformers>=4.51.3,!=4.52.0,!=4.52.1,!=4.52.2,!=4.52.3,!=4.53.0,!=4.54.0,!=4.55.0,!=4.55.1,!=4.57.0,!=4.57.4,!=4.57.5,!=5.0.0,!=5.1.0,<=5.5.0",

studio/backend/core/inference/llama_cpp.py

@@ -1071,7 +1071,7 @@ class LlamaCppBackend:
     # ── Binary discovery ──────────────────────────────────────────
 
     @staticmethod
-    def _find_llama_server_binary() -> Optional[str]:
+    def _find_llama_server_binary(*, include_denied: bool = False) -> Optional[str]:
         """
         Locate the llama-server binary.
 
@@ -1088,28 +1088,70 @@ class LlamaCppBackend:
         """
         binary_name = "llama-server.exe" if sys.platform == "win32" else "llama-server"
 
+        def _file_status(p: Path) -> str:
+            # "file", "absent", or "denied" (exists but stays access-denied
+            # across a short retry: Windows AV/ACL or an install replace in
+            # flight). is_file() raises PermissionError (WinError 5) instead of
+            # returning False for the locked case, so never treat it as missing.
+            for _ in range(5):
+                try:
+                    return "file" if p.is_file() else "absent"
+                except PermissionError:
+                    time.sleep(0.2)
+                except OSError:
+                    return "absent"
+            return "denied"
+
+        def _is_file(p: Path) -> bool:
+            return _file_status(p) == "file"
+
+        def _layout_candidates(d: Path) -> list:
+            # build layouts probed under a llama.cpp dir, highest priority first
+            cands = [d / binary_name, d / "build" / "bin" / binary_name]
+            if sys.platform == "win32":
+                cands.append(d / "build" / "bin" / "Release" / binary_name)
+            return cands
+
+        def _unavailable(p: object) -> None:
+            # a pinned or managed binary that exists but is access-denied: report
+            # it instead of silently downgrading to a lower-priority llama-server
+            logger.warning(
+                f"llama-server at {p} exists but is access-denied (antivirus or "
+                "an in-flight install); not falling back to another binary, "
+                "retry once it is released"
+            )
+            return None
+
+        def _scan_pinned(paths: list):
+            # first existing candidate wins -> (path, None); a present-but-denied
+            # one -> (None, denied_path) so the caller reports it rather than
+            # skipping to a lower-priority location. include_denied returns the
+            # locked path instead: diffusion asset lookup only needs its dir.
+            for p in paths:
+                st = _file_status(p)
+                if st == "file":
+                    return str(p), None
+                if st == "denied":
+                    return (str(p), None) if include_denied else (None, p)
+            return None, None
+
         # 1. Env var: direct path to binary
         env_path = os.environ.get("LLAMA_SERVER_PATH")
-        if env_path and Path(env_path).is_file():
-            return env_path
+        if env_path:
+            hit, locked = _scan_pinned([Path(env_path)])
+            if locked is not None:
+                return _unavailable(locked)
+            if hit:
+                return hit
 
         # 1b. UNSLOTH_LLAMA_CPP_PATH: custom llama.cpp install dir
         custom_llama_cpp = os.environ.get("UNSLOTH_LLAMA_CPP_PATH")
         if custom_llama_cpp:
-            custom_dir = Path(custom_llama_cpp)
-            # Root dir (make builds)
-            root_bin = custom_dir / binary_name
-            if root_bin.is_file():
-                return str(root_bin)
-            # build/bin/ (cmake on Linux)
-            cmake_bin = custom_dir / "build" / "bin" / binary_name
-            if cmake_bin.is_file():
-                return str(cmake_bin)
-            # build/bin/Release/ (cmake on Windows)
-            if sys.platform == "win32":
-                win_bin = custom_dir / "build" / "bin" / "Release" / binary_name
-                if win_bin.is_file():
-                    return str(win_bin)
+            hit, locked = _scan_pinned(_layout_candidates(Path(custom_llama_cpp)))
+            if locked is not None:
+                return _unavailable(locked)
+            if hit:
+                return hit
 
         # 2-4. Match installer layout: env-mode -> $STUDIO_HOME/llama.cpp;
         # default/HOME-redirect -> ~/.unsloth/llama.cpp (sibling of studio).
@@ -1141,31 +1183,18 @@ class LlamaCppBackend:
                 _seen_roots.add(k)
                 _unique_roots.append(r)
         for unsloth_home in _unique_roots:
-            home_root = unsloth_home / binary_name
-            if home_root.is_file():
-                return str(home_root)
-            home_linux = unsloth_home / "build" / "bin" / binary_name
-            if home_linux.is_file():
-                return str(home_linux)
-            if sys.platform == "win32":
-                home_win = unsloth_home / "build" / "bin" / "Release" / binary_name
-                if home_win.is_file():
-                    return str(home_win)
+            hit, locked = _scan_pinned(_layout_candidates(unsloth_home))
+            if locked is not None:
+                return _unavailable(locked)
+            if hit:
+                return hit
 
-        # 5-6. Legacy: in-tree build (older setup.sh / setup.ps1)
+        # 5-6. Legacy: in-tree build (older setup.sh / setup.ps1). A fallback,
+        # so a denied candidate here just continues (no no-fallback halt).
         project_root = Path(__file__).resolve().parents[4]
-        # Root dir (make builds)
-        root_path = project_root / "llama.cpp" / binary_name
-        if root_path.is_file():
-            return str(root_path)
-        # build/bin/ (cmake builds)
-        build_path = project_root / "llama.cpp" / "build" / "bin" / binary_name
-        if build_path.is_file():
-            return str(build_path)
-        if sys.platform == "win32":
-            win_path = project_root / "llama.cpp" / "build" / "bin" / "Release" / binary_name
-            if win_path.is_file():
-                return str(win_path)
+        for p in _layout_candidates(project_root / "llama.cpp"):
+            if _is_file(p):
+                return str(p)
 
         # 7. System PATH
         system_path = shutil.which("llama-server")
@@ -1174,7 +1203,7 @@ class LlamaCppBackend:
 
         # 8. Legacy: extracted to bin/
         bin_path = project_root / "bin" / binary_name
-        if bin_path.is_file():
+        if _is_file(bin_path):
             return str(bin_path)
 
         return None
@@ -2351,6 +2380,17 @@ class LlamaCppBackend:
                         # what we have.
                         break
 
+            # Decide diffusion routing before the SWA resolver below: it can raise on an arch transformers
+            # does not know, which would otherwise drop a DiffusionGemma model to plain llama-server.
+            self._is_diffusion = bool(
+                (arch and arch.lower().startswith("diffusion")) or canvas_seen
+            )
+            if self._is_diffusion:
+                logger.info(
+                    f"GGUF metadata: diffusion model detected (architecture={arch}); "
+                    "will serve via the diffusion runner"
+                )
+
             # Expand a scalar period straight from the GGUF first.
             if (
                 self._sliding_window_pattern is None
@@ -2361,9 +2401,14 @@ class LlamaCppBackend:
                     (i + 1) % sliding_window_pattern_period != 0 for i in range(self._n_layers)
                 ]
 
-            # Otherwise hand off to the resolver (cache / bootstrap /
-            # transformers / HF); see `_resolve_swa_pattern`.
-            if self._sliding_window_pattern is None and self._sliding_window and self._n_layers:
+            # Otherwise hand off to the resolver (cache / bootstrap / transformers / HF). Diffusion models
+            # skip it: they do not use Studio's SWA pattern and the resolver can raise for them.
+            if (
+                self._sliding_window_pattern is None
+                and self._sliding_window
+                and self._n_layers
+                and not self._is_diffusion
+            ):
                 hf_repo_candidates = (
                     general.get("general.source.huggingface.repository"),
                     _hf_repo_from_url(general.get("general.source.url")),
@@ -2390,17 +2435,6 @@ class LlamaCppBackend:
                     hf_repo_candidates,
                 )
 
-            # Block-diffusion models (DiffusionGemma) report a diffusion arch
-            # and/or a diffusion.canvas_length KV; they need the diffusion runner.
-            self._is_diffusion = bool(
-                (arch and arch.lower().startswith("diffusion")) or canvas_seen
-            )
-            if self._is_diffusion:
-                logger.info(
-                    f"GGUF metadata: diffusion model detected (architecture={arch}); "
-                    "will serve via the diffusion runner"
-                )
-
             if self._context_length:
                 logger.info(f"GGUF metadata: context_length={self._context_length}")
             if self._chat_template:
@@ -2438,7 +2472,9 @@ class LlamaCppBackend:
         visual_bin = os.environ.get("DG_VISUAL_BIN")
         if not visual_bin:
             name = "llama-diffusion-gemma-visual-server" + (".exe" if os.name == "nt" else "")
-            base = self._find_llama_server_binary()
+            # include_denied: a transiently locked llama-server still pins the
+            # install dir so the adjacent visual-server can be found
+            base = self._find_llama_server_binary(include_denied = True)
             if base:
                 base_dir = Path(base).parent
                 for cand in (
@@ -3503,6 +3539,15 @@ class LlamaCppBackend:
                     )
 
             if not binary:
+                # distinguish a transiently locked binary (antivirus / in-flight
+                # install) from a missing one so the user retries, not reinstalls
+                locked = self._find_llama_server_binary(include_denied = True)
+                if locked:
+                    raise RuntimeError(
+                        f"llama-server at {locked} is temporarily unavailable "
+                        "(access-denied; antivirus or an in-flight install). "
+                        "Retry the load once it is released."
+                    )
                 raise RuntimeError(
                     "llama-server binary not found. "
                     "Run setup.sh to build it, install llama.cpp, "

studio/backend/core/training/worker.py

@@ -1687,12 +1687,12 @@ def _run_mlx_training(event_queue, stop_queue, config):
         warmup_steps = 5
 
     # ── 5. Build output dir ──
+    # Resolve to ~/.unsloth/studio/outputs/ so the export page finds it
+    from utils.paths import resolve_output_dir, ensure_dir, default_run_dir_name
+
     output_dir = config.get("output_dir", "")
     if not output_dir:
-        output_dir = f"{model_name.replace('/', '_')}_{int(time.time())}"
-    # Resolve to ~/.unsloth/studio/outputs/ so the export page finds it
-    from utils.paths import resolve_output_dir, ensure_dir
-
+        output_dir = f"{default_run_dir_name(model_name)}_{int(time.time())}"
     output_dir = str(resolve_output_dir(output_dir))
     ensure_dir(Path(output_dir))
 
@@ -2450,6 +2450,7 @@ def run_training_process(*, event_queue: Any, stop_queue: Any, config: dict) ->
             resolve_output_dir,
             resolve_tensorboard_dir,
             datasets_root,
+            default_run_dir_name,
         )
 
         import transformers
@@ -2773,7 +2774,7 @@ def run_training_process(*, event_queue: Any, stop_queue: Any, config: dict) ->
             resume_from_checkpoint
         )
         if not output_dir:
-            output_dir = f"{model_name.replace('/', '_')}_{int(time.time())}"
+            output_dir = f"{default_run_dir_name(model_name)}_{int(time.time())}"
         output_dir = str(resolve_output_dir(output_dir))
         ensure_dir(Path(output_dir))
 
@@ -2924,7 +2925,7 @@ def _run_embedding_training(event_queue: Any, stop_queue: Any, config: dict) ->
         from datasets import Dataset
         from utils.datasets.cache_safe import load_dataset_cache_safe as load_dataset
         from transformers import TrainerCallback
-        from utils.paths import datasets_root, resolve_output_dir
+        from utils.paths import datasets_root, resolve_output_dir, default_run_dir_name
     except ImportError as e:
         event_queue.put(
             {
@@ -3182,7 +3183,7 @@ def _run_embedding_training(event_queue: Any, stop_queue: Any, config: dict) ->
         resume_from_checkpoint
     )
     if not output_dir:
-        output_dir = str(resolve_output_dir(f"{model_name.replace('/', '_')}_{int(time.time())}"))
+        output_dir = f"{default_run_dir_name(model_name)}_{int(time.time())}"
     output_dir = str(resolve_output_dir(output_dir))
 
     num_epochs = config.get("num_epochs", 2)

studio/backend/models/inference.py

@@ -416,7 +416,7 @@ class ImageUrl(BaseModel):
     """Image URL object — supports data URIs and remote URLs."""
 
     url: str = Field(..., description = "data:image/png;base64,... or https://...")
-    detail: Optional[Literal["auto", "low", "high"]] = "auto"
+    detail: Optional[Literal["auto", "low", "high", "original"]] = "auto"
 
 
 class ImageContentPart(BaseModel):
@@ -1125,7 +1125,7 @@ class ResponsesInputImagePart(BaseModel):
 
     type: Literal["input_image"]
     image_url: str = Field(..., description = "data:image/png;base64,... or https://...")
-    detail: Optional[Literal["auto", "low", "high"]] = "auto"
+    detail: Optional[Literal["auto", "low", "high", "original"]] = "auto"
 
 
 class ResponsesOutputTextPart(BaseModel):

studio/backend/routes/inference.py

@@ -5309,15 +5309,72 @@ def _responses_message_text(content: Union[str, list]) -> str:
     return "\n".join(parts)
 
 
-def _responses_tool_output_text(output: Union[str, list]) -> str:
+def _responses_tool_output_content(output: Union[str, list]) -> Union[str, list]:
     """Return Chat Completions-safe content for a Responses tool result."""
     if isinstance(output, str):
         return output if output.strip() else "(no output)"
 
-    if output:
+    if not output:
+        return "(no output)"
+
+    text_parts: list[str] = []
+    chat_parts: list = []
+    has_multimodal = False
+    for part in output:
+        if not isinstance(part, dict):
+            return json.dumps(output)
+        part_type = part.get("type")
+        if part_type in ("input_text", "output_text", "text"):
+            text = part.get("text")
+            if text is None:
+                _raise_unsupported_openai_parameter(
+                    "input",
+                    "Responses function_call_output.output text parts require a text field.",
+                )
+            text = str(text)
+            text_parts.append(text)
+            chat_parts.append(TextContentPart(type = "text", text = text))
+            continue
+        if part_type == "input_image":
+            image_url = part.get("image_url")
+            if not isinstance(image_url, str) or not image_url:
+                if part.get("file_id"):
+                    _raise_unsupported_openai_parameter(
+                        "input",
+                        "Responses function_call_output.output input_image parts with file_id are not supported by the local adapter. Use image_url instead.",
+                    )
+                _raise_unsupported_openai_parameter(
+                    "input",
+                    "Responses function_call_output.output input_image parts require an image_url string.",
+                )
+            detail = part.get("detail", "auto")
+            if detail is None:
+                detail = "auto"
+            if detail not in ("auto", "low", "high", "original"):
+                _raise_unsupported_openai_parameter(
+                    "input",
+                    "Responses function_call_output.output input_image detail must be auto, low, high, or original.",
+                )
+            chat_parts.append(
+                ImageContentPart(
+                    type = "image_url",
+                    image_url = ImageUrl(url = image_url, detail = detail),
+                )
+            )
+            has_multimodal = True
+            continue
+        if part_type == "input_file":
+            _raise_unsupported_openai_parameter(
+                "input",
+                "Responses function_call_output.output input_file parts are not supported by the local adapter.",
+            )
         return json.dumps(output)
 
-    return "(no output)"
+    if has_multimodal:
+        return chat_parts
+
+    text = "\n".join(text_parts)
+    return text if text.strip() else "(no output)"
 
 
 _RESPONSES_THINK_OPEN = "<think>"
@@ -5521,10 +5578,9 @@ def _normalise_responses_input(payload: ResponsesRequest) -> list[ChatMessage]:
             continue
 
         if isinstance(item, ResponsesFunctionCallOutputInputItem):
-            # Chat Completions `role="tool"` requires string content; serialize
-            # a Responses content-array output and keep empty outputs from
-            # tripping the stricter ChatMessage role validator.
-            output = _responses_tool_output_text(item.output)
+            # Flatten pure text arrays for broad template compatibility, and
+            # forward image URL outputs as real multimodal parts for vision models.
+            output = _responses_tool_output_content(item.output)
             messages.append(
                 ChatMessage(
                     role = "tool",

studio/backend/tests/test_default_output_dir_name.py

@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: AGPL-3.0-only
+# Copyright 2026-present the Unsloth AI Inc. team. All rights reserved. See /studio/LICENSE.AGPL-3.0
+
+"""Auto-generated training output dir names stay inside outputs_root.
+
+Regression for local-model training: a model loaded by absolute path (e.g.
+``G:\\modelsAI\\...\\gemma-4-12B-it`` on a non-system drive) used to seed the
+default run dir with that full path, so ``resolve_output_dir`` raised
+``path escapes root`` because the result was not under ``<studio>/outputs``.
+"""
+
+import importlib.util
+from pathlib import Path
+
+import pytest
+
+
+_BACKEND_DIR = Path(__file__).resolve().parent.parent
+
+
+def _load_storage_roots():
+    path = _BACKEND_DIR / "utils/paths/storage_roots.py"
+    spec = importlib.util.spec_from_file_location("storage_roots_under_test", path)
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+def test_repo_id_keeps_namespace():
+    sr = _load_storage_roots()
+    assert sr.default_run_dir_name("unsloth/gemma-3-4b") == "unsloth_gemma-3-4b"
+    assert sr.default_run_dir_name("gemma-3-4b") == "gemma-3-4b"
+
+
+def test_local_paths_collapse_to_basename():
+    sr = _load_storage_roots()
+    assert sr.default_run_dir_name(r"G:\modelsAI\gguf\test\gemma-4-12B-it") == "gemma-4-12B-it"
+    assert sr.default_run_dir_name("/data/models/gemma-3-4b") == "gemma-3-4b"
+    assert sr.default_run_dir_name("~/models/gemma-3-4b") == "gemma-3-4b"
+    assert sr.default_run_dir_name("C:/Users/me/models/gemma-3-4b") == "gemma-3-4b"
+
+
+def test_empty_falls_back_to_model():
+    sr = _load_storage_roots()
+    assert sr.default_run_dir_name("") == "model"
+    assert sr.default_run_dir_name("   ") == "model"
+
+
+def test_very_long_name_is_capped():
+    sr = _load_storage_roots()
+    name = sr.default_run_dir_name("a" * 500)
+    assert 0 < len(name) <= 200
+
+
+def test_derived_name_resolves_under_outputs_root(tmp_path, monkeypatch):
+    sr = _load_storage_roots()
+    outputs = tmp_path / "outputs"
+    outputs.mkdir()
+    monkeypatch.setattr(sr, "outputs_root", lambda: outputs)
+
+    name = sr.default_run_dir_name(r"G:\modelsAI\gguf\test\gemma-4-12B-it")
+    resolved = sr.resolve_output_dir(f"{name}_1781327234")
+    assert resolved == outputs / "gemma-4-12B-it_1781327234"
+    # No escape: the absolute G: source no longer leaks into the output path.
+    assert "modelsAI" not in str(resolved)

studio/backend/tests/test_llama_cpp_update.py

@@ -233,6 +233,39 @@ def test_status_source_build_suppressed_when_newer(monkeypatch, tmp_path):
     assert st["installed_tag"] == "b9600"
 
 
+def test_status_source_build_offers_same_base_mix(monkeypatch, tmp_path):
+    # The reported banner bug: a source build at the same upstream base as a new
+    # Unsloth prebuilt that adds a mix-<sha> suffix. The base build numbers match
+    # (9596 == 9596) but the mix carries extra patches the source build lacks, so
+    # the update must still surface -- mirroring the marker path's is_behind.
+    binary = tmp_path / "llama.cpp" / "build" / "bin" / "llama-server"
+    binary.parent.mkdir(parents = True)
+    binary.write_text("stub")
+    monkeypatch.setattr(upd, "_find_binary", lambda: str(binary))
+    _prebuilt(monkeypatch, release_tag = "b9596-mix-e6f2453", llama_tag = "b9596")
+    monkeypatch.setattr(upd, "_installed_build_number", lambda b: 9596)
+    st = upd.get_update_status()
+    assert st["supported"] is True
+    assert st["update_available"] is True
+    assert st["source_build"] is True
+    assert st["installed_tag"] == "b9596"
+    assert st["latest_tag"] == "b9596-mix-e6f2453"
+
+
+def test_status_source_build_same_base_bare_not_offered(monkeypatch, tmp_path):
+    # Same base, but the prebuilt is a bare rebuild (no mix suffix): nothing extra
+    # to gain, so do not nag.
+    binary = tmp_path / "llama.cpp" / "build" / "bin" / "llama-server"
+    binary.parent.mkdir(parents = True)
+    binary.write_text("stub")
+    monkeypatch.setattr(upd, "_find_binary", lambda: str(binary))
+    _prebuilt(monkeypatch, release_tag = "b9596", llama_tag = "b9596")
+    monkeypatch.setattr(upd, "_installed_build_number", lambda b: 9596)
+    st = upd.get_update_status()
+    assert st["update_available"] is False
+    assert st["latest_tag"] == "b9596"
+
+
 def test_status_source_build_skips_probe_while_job_runs(monkeypatch, tmp_path):
     # While the updater swaps the tree, status polls must not exec the binary
     # being replaced (on Windows that exec can fail the installer's os.replace);

studio/backend/tests/test_responses_tool_passthrough.py

@@ -36,6 +36,7 @@ import json
 
 import httpx
 import pytest
+from fastapi import HTTPException
 from fastapi.responses import JSONResponse
 from pydantic import ValidationError
 
@@ -60,7 +61,7 @@ from routes.inference import (
     _build_chat_request,
     _chat_tool_calls_to_responses_output,
     _normalise_responses_input,
-    _responses_tool_output_text,
+    _responses_tool_output_content,
     _responses_non_streaming,
     _responses_stream,
     _translate_responses_tool_choice_to_chat,
@@ -435,20 +436,144 @@ class TestNormaliseResponsesInputWithTools:
         assert sum(1 for m in msgs if m.role == "system") == 1
         assert "A" in msgs[0].content and "B" in msgs[0].content
 
-    def test_content_array_output_serialised_to_json_string(self):
+    def test_content_array_text_output_flattens_to_tool_text(self):
         payload = ResponsesRequest(
             input = [
                 {
                     "type": "function_call_output",
                     "call_id": "call_1",
-                    "output": [{"type": "output_text", "text": "ok"}],
+                    "output": [{"type": "input_text", "text": "ok"}],
                 }
             ],
         )
         msgs = _normalise_responses_input(payload)
         assert msgs[0].role == "tool"
-        # Content is serialised so llama-server sees a string.
-        assert json.loads(msgs[0].content) == [{"type": "output_text", "text": "ok"}]
+        assert msgs[0].content == "ok"
+
+    def test_content_array_image_output_becomes_multimodal_tool_content(self):
+        payload = ResponsesRequest(
+            input = [
+                {
+                    "type": "function_call_output",
+                    "call_id": "call_1",
+                    "output": [
+                        {"type": "input_text", "text": "see image"},
+                        {
+                            "type": "input_image",
+                            "image_url": "data:image/png;base64,AAA",
+                            "detail": "high",
+                        },
+                    ],
+                }
+            ],
+        )
+        msgs = _normalise_responses_input(payload)
+        assert msgs[0].role == "tool"
+        assert msgs[0].tool_call_id == "call_1"
+        assert msgs[0].model_dump(exclude_none = True)["content"] == [
+            {"type": "text", "text": "see image"},
+            {
+                "type": "image_url",
+                "image_url": {
+                    "url": "data:image/png;base64,AAA",
+                    "detail": "high",
+                },
+            },
+        ]
+
+        chat_req = _build_chat_request(payload, msgs, stream = False)
+        assert chat_req.model_dump(exclude_none = True)["messages"][0]["content"] == [
+            {"type": "text", "text": "see image"},
+            {
+                "type": "image_url",
+                "image_url": {
+                    "url": "data:image/png;base64,AAA",
+                    "detail": "high",
+                },
+            },
+        ]
+
+    def test_content_array_image_output_allows_original_detail(self):
+        payload = ResponsesRequest(
+            input = [
+                {
+                    "type": "function_call_output",
+                    "call_id": "call_1",
+                    "output": [
+                        {
+                            "type": "input_image",
+                            "image_url": "https://example.com/screenshot.png",
+                            "detail": "original",
+                        },
+                    ],
+                }
+            ],
+        )
+        msgs = _normalise_responses_input(payload)
+        assert msgs[0].model_dump(exclude_none = True)["content"] == [
+            {
+                "type": "image_url",
+                "image_url": {
+                    "url": "https://example.com/screenshot.png",
+                    "detail": "original",
+                },
+            },
+        ]
+
+    def test_content_array_file_id_image_output_rejected_clearly(self):
+        payload = ResponsesRequest(
+            input = [
+                {
+                    "type": "function_call_output",
+                    "call_id": "call_1",
+                    "output": [
+                        {"type": "input_text", "text": "see image"},
+                        {"type": "input_image", "file_id": "file_abc"},
+                    ],
+                }
+            ],
+        )
+        with pytest.raises(HTTPException) as exc:
+            _normalise_responses_input(payload)
+        assert exc.value.status_code == 400
+        assert "file_id" in str(exc.value.detail)
+
+    def test_content_array_file_output_rejected_clearly(self):
+        payload = ResponsesRequest(
+            input = [
+                {
+                    "type": "function_call_output",
+                    "call_id": "call_1",
+                    "output": [
+                        {"type": "input_text", "text": "see file"},
+                        {
+                            "type": "input_file",
+                            "file_data": "data:application/pdf;base64,AAA",
+                            "filename": "report.pdf",
+                        },
+                    ],
+                }
+            ],
+        )
+        with pytest.raises(HTTPException) as exc:
+            _normalise_responses_input(payload)
+        assert exc.value.status_code == 400
+        assert "input_file" in str(exc.value.detail)
+
+    def test_content_array_malformed_image_output_rejected_clearly(self):
+        payload = ResponsesRequest(
+            input = [
+                {
+                    "type": "function_call_output",
+                    "call_id": "call_1",
+                    "output": [{"type": "input_image", "detail": "high"}],
+                }
+            ],
+        )
+        with pytest.raises(HTTPException) as exc:
+            _normalise_responses_input(payload)
+        assert exc.value.status_code == 400
+        assert "image_url" in str(exc.value.detail)
 
     def test_empty_function_call_output_gets_no_output_sentinel(self):
         payload = ResponsesRequest(
@@ -541,8 +666,8 @@ class TestNormaliseResponsesInputWithTools:
         assert msgs[0].content == "(no output)"
 
     def test_tool_output_serializer_preserves_non_empty_text(self):
-        assert _responses_tool_output_text("done") == "done"
-        assert _responses_tool_output_text("  done  ") == "  done  "
+        assert _responses_tool_output_content("done") == "done"
+        assert _responses_tool_output_content("  done  ") == "  done  "
 
 
 # =====================================================================

studio/backend/utils/llama_cpp_update.py

@@ -37,6 +37,7 @@ from utils.llama_cpp_freshness import (
     _INSTALL_MARKER_NAME,
     check_prebuilt_freshness,
     latest_published_release,
+    parse_base_build,
     read_install_marker,
     reset_caches,
 )
@@ -220,23 +221,42 @@ def _source_build_status(binary: str, *, force_refresh: bool) -> Optional[dict]:
     res = _resolve_prebuilt_for_host(force_refresh = force_refresh)
     if not res or not res.get("prebuilt_available"):
         return None
-    # llama_tag is the upstream build (bNNNN, what --version reports); release_tag
-    # can be a fork wrapper tag, so compare/display against llama_tag.
-    latest = res.get("llama_tag") or res.get("release_tag")
-    if not latest:
+    # llama_tag is the upstream base (bNNNN, what --version reports); release_tag
+    # is the full tag, either a same-base mix (bNNNN-mix-<sha>) or a fork wrapper
+    # (e.g. v1.0). Compare the numeric base against llama_tag.
+    base_tag = res.get("llama_tag") or res.get("release_tag")
+    release_tag = res.get("release_tag")
+    if not base_tag:
         return None
     # No resolvable install root (e.g. a pinned LLAMA_SERVER_PATH we cannot
     # manage) means an apply would not take effect, so do not offer.
     if _llama_install_root(binary) is None:
         return None
     installed_build = _installed_build_number(binary)
-    m = re.search(r"(\d+)", latest)
-    latest_build = int(m.group(1)) if m else None
-    # Suppress only when the source build is reliably newer/equal; unknown
-    # version (the involuntary source-build case) is treated as behind.
-    update_available = (
-        installed_build is None or latest_build is None or installed_build < latest_build
+    latest_build = parse_base_build(base_tag)
+    # A same-base mix adds patches the bare base lacks, so it is newer even at an
+    # unchanged build number (the marker path's is_behind already does this). The
+    # bNNNN anchor keeps a fork wrapper tag from being read as a mix.
+    latest_is_mix = (
+        isinstance(release_tag, str)
+        and latest_build is not None
+        and parse_base_build(release_tag) == latest_build
+        and release_tag.strip() != f"b{latest_build}"
     )
+    if installed_build is None or latest_build is None:
+        # Unknown installed/latest version (the involuntary source-build case):
+        # treat as behind so we still offer the prebuilt.
+        update_available = True
+    elif installed_build < latest_build:
+        update_available = True
+    elif installed_build == latest_build:
+        # Same upstream base: offer the extra-patch mix, never a bare rebuild.
+        update_available = latest_is_mix
+    else:
+        # Source build newer than the latest prebuilt: downgrade guard.
+        update_available = False
+    # Display the mix tag when that's what makes it newer; otherwise the base.
+    latest = release_tag if latest_is_mix else base_tag
     with _job_lock:
         job = dict(_job)
     return {

studio/backend/utils/models/model_config.py

@@ -2361,10 +2361,13 @@ class ModelConfig:
             # Does the HF repo contain GGUF files?
             gguf_filename = detect_gguf_model_remote(identifier, hf_token = hf_token)
             if gguf_filename:
-                # Preflight: verify llama-server binary exists before a multi-GB download
+                # Preflight: verify llama-server binary exists before a multi-GB
+                # download. include_denied: a transiently locked binary still
+                # exists (the lock clears long before the download finishes; the
+                # load itself reports a still-locked binary distinctly).
                 from core.inference.llama_cpp import LlamaCppBackend
 
-                if not LlamaCppBackend._find_llama_server_binary():
+                if not LlamaCppBackend._find_llama_server_binary(include_denied = True):
                     raise RuntimeError(
                         "llama-server binary not found — cannot load GGUF models. "
                         "Run setup.sh to build it, or set LLAMA_SERVER_PATH."

studio/backend/utils/paths/__init__.py

@@ -41,6 +41,7 @@ from .storage_roots import (
     ensure_dir,
     ensure_studio_directories,
     resolve_under_root,
+    default_run_dir_name,
     resolve_output_dir,
     resolve_export_dir,
     resolve_export_write_dir,
@@ -88,6 +89,7 @@ __all__ = [
     "ensure_dir",
     "ensure_studio_directories",
     "resolve_under_root",
+    "default_run_dir_name",
     "resolve_output_dir",
     "resolve_export_dir",
     "resolve_export_write_dir",

studio/backend/utils/paths/storage_roots.py

@@ -5,6 +5,7 @@ from __future__ import annotations
 
 import json
 import os
+import re
 import sys
 from pathlib import Path, PurePosixPath, PureWindowsPath
 import tempfile
@@ -384,6 +385,23 @@ def resolve_under_root(
     return candidate
 
 
+def default_run_dir_name(model_name: str) -> str:
+    # Folder-safe run name for an auto-created output dir. Repo ids keep their
+    # namespace (org/model -> org_model); local paths (incl. G:\dir\model)
+    # collapse to their final component so an absolute source can't escape
+    # outputs_root. Length-capped to stay under the filesystem name limit.
+    raw = str(model_name or "").strip()
+    is_path = (
+        "\\" in raw
+        or raw.startswith(("/", "~", "."))
+        or os.path.isabs(raw)
+        or (len(raw) >= 2 and raw[1] == ":")
+    )
+    base = PureWindowsPath(raw).name if is_path else raw.replace("/", "_")
+    base = re.sub(r"[^A-Za-z0-9._-]+", "_", base)[:200].strip("._-")
+    return base or "model"
+
+
 def resolve_output_dir(path_value: str | None = None) -> Path:
     return resolve_under_root(
         path_value,

studio/frontend/src/components/app-sidebar.tsx

@@ -45,8 +45,7 @@ import { Switch } from "@/components/ui/switch";
 import { useAnimatedThemeToggle } from "@/components/ui/animated-theme-toggler";
 import { cn } from "@/lib/utils";
 import {
-  Archive01Icon,
-  ArchiveRestoreIcon,
+  Archive03Icon,
   ChefHatIcon,
   CursorInfo02Icon,
   DashboardCircleIcon,
@@ -62,6 +61,8 @@ import {
   Logout05Icon,
   MoreVerticalIcon,
   Search01Icon,
+  PinIcon,
+  PinOffIcon,
   PlusSignIcon,
   PowerIcon,
   PencilEdit02Icon,
@@ -95,11 +96,12 @@ import {
   moveChatItemToProject,
   renameChatItem,
   renameChatProject,
-  unarchiveChatItem,
   useChatRuntimeStore,
   useChatProjects,
   useChatSearchStore,
   useChatSidebarItems,
+  usePinnedChatsStore,
+  useChatPreferencesStore,
   type ProjectRecord,
   type SidebarItem,
 } from "@/features/chat";
@@ -297,16 +299,32 @@ export function AppSidebar() {
   const activeProjectId = isChatRoute
     ? ((search.project as string | undefined) ?? null)
     : null;
-  const { items: allChatItems, archivedItems: archivedChatItems } =
-    useChatSidebarItems({
-      enabled: !isStudioRoute,
-      requireMessages: false,
-    });
-  const recentChatItems = useMemo(
-    () => allChatItems.filter((item) => !item.projectId),
-    [allChatItems],
+  const { items: allChatItems } = useChatSidebarItems({
+    enabled: !isStudioRoute,
+    requireMessages: false,
+  });
+  const pinnedIds = usePinnedChatsStore((s) => s.pinnedIds);
+  const togglePinnedChat = usePinnedChatsStore((s) => s.togglePin);
+  const unpinChat = usePinnedChatsStore((s) => s.unpin);
+  const confirmDeleteChats = useChatPreferencesStore(
+    (s) => s.confirmDeleteChats,
   );
-  const [archivedOpen, setArchivedOpen] = useState(false);
+  const pinnedIdSet = useMemo(() => new Set(pinnedIds), [pinnedIds]);
+  const recentChatItems = useMemo(
+    () =>
+      allChatItems.filter(
+        (item) => !item.projectId && !pinnedIdSet.has(item.id),
+      ),
+    [allChatItems, pinnedIdSet],
+  );
+  // Pinned chats, in pin order (most recent first).
+  const pinnedChatItems = useMemo(() => {
+    const byId = new Map(allChatItems.map((item) => [item.id, item]));
+    return pinnedIds
+      .map((id) => byId.get(id))
+      .filter((item): item is SidebarItem => Boolean(item));
+  }, [allChatItems, pinnedIds]);
+  const [pinnedOpen, setPinnedOpen] = useState(true);
   const storeThreadId = useChatRuntimeStore((s) => s.activeThreadId);
   const setActiveThreadId = useChatRuntimeStore((s) => s.setActiveThreadId);
   const activeThreadId = isChatRoute
@@ -382,6 +400,19 @@ export function AppSidebar() {
     });
   }
 
+  // Shared chat delete: same error toast and pin cleanup whether or not the
+  // confirm dialog is used.
+  async function deleteChatWithCleanup(item: SidebarItem) {
+    try {
+      await handleDeleteThread(item);
+      unpinChat(item.id);
+    } catch (err) {
+      toast.error(translate("shell.toast.failedToDeleteChat"), {
+        description: err instanceof Error ? err.message : undefined,
+      });
+    }
+  }
+
   async function handleArchiveThread(item: SidebarItem) {
     try {
       await archiveChatItem(item, activeThreadId, (view) => {
@@ -392,6 +423,19 @@ export function AppSidebar() {
             : { new: view.newThreadNonce },
         });
       });
+      const toastId = toast(
+        <button
+          type="button"
+          onClick={() => {
+            toast.dismiss(toastId);
+            useSettingsDialogStore.getState().openArchivedChats();
+          }}
+          className="w-full cursor-pointer text-left"
+        >
+          You can view archived chats in Settings
+        </button>,
+        { closeButton: true },
+      );
     } catch (err) {
       toast.error("Failed to archive chat", {
         description: err instanceof Error ? err.message : undefined,
@@ -399,16 +443,6 @@ export function AppSidebar() {
     }
   }
 
-  async function handleUnarchiveThread(item: SidebarItem) {
-    try {
-      await unarchiveChatItem(item);
-    } catch (err) {
-      toast.error("Failed to unarchive chat", {
-        description: err instanceof Error ? err.message : undefined,
-      });
-    }
-  }
-
   type RenameTarget =
     | { kind: "chat"; item: SidebarItem; current: string }
     | { kind: "project"; project: ProjectRecord; current: string }
@@ -417,6 +451,19 @@ export function AppSidebar() {
     null,
   );
   const [renameDraft, setRenameDraft] = useState("");
+  // Skips the inline rename input's blur-commit when Enter/Escape already handled it.
+  const skipRenameBlurRef = useRef(false);
+  // Optimistic title shown while the debounced sidebar refresh catches up after
+  // a rename, so the old name does not flash back in.
+  const [pendingRename, setPendingRename] = useState<{
+    id: string;
+    title: string;
+  } | null>(null);
+  useEffect(() => {
+    if (!pendingRename) return;
+    const match = allChatItems.find((i) => i.id === pendingRename.id);
+    if (match && match.title === pendingRename.title) setPendingRename(null);
+  }, [allChatItems, pendingRename]);
   const [creatingProject, setCreatingProject] = useState(false);
   const [projectNameDraft, setProjectNameDraft] = useState("");
   const [projectCreateMoveTarget, setProjectCreateMoveTarget] =
@@ -447,9 +494,11 @@ export function AppSidebar() {
     if (!target || !renameDirty) return;
     setRenamingTarget(null);
     if (target.kind === "chat") {
+      setPendingRename({ id: target.item.id, title: renameTrimmed });
       try {
         await renameChatItem(target.item, renameTrimmed);
       } catch (err) {
+        setPendingRename(null);
         toast.error(translate("shell.toast.failedToRenameChat"), {
           description: err instanceof Error ? err.message : undefined,
         });
@@ -476,6 +525,33 @@ export function AppSidebar() {
     }
   }
 
+  // Inline chat rename commits on Enter or blur, cancels on Escape.
+  function handleInlineRenameKeyDown(
+    event: React.KeyboardEvent<HTMLInputElement>,
+  ) {
+    if (event.key === "Enter") {
+      event.preventDefault();
+      skipRenameBlurRef.current = true;
+      // Commit when changed; otherwise just close, so a no-op Enter does not
+      // leave the row stuck as an input with its blur suppressed.
+      if (renameDirty) void commitRename();
+      else setRenamingTarget(null);
+    } else if (event.key === "Escape") {
+      event.preventDefault();
+      skipRenameBlurRef.current = true;
+      setRenamingTarget(null);
+    }
+  }
+
+  function handleInlineRenameBlur() {
+    if (skipRenameBlurRef.current) {
+      skipRenameBlurRef.current = false;
+      return;
+    }
+    if (renameDirty) void commitRename();
+    else setRenamingTarget(null);
+  }
+
   type DeleteTarget =
     | { kind: "chat"; item: SidebarItem }
     | { kind: "project"; project: ProjectRecord }
@@ -497,13 +573,7 @@ export function AppSidebar() {
       target.kind === "project" && deleteProjectFiles;
     setConfirmingDelete(null);
     if (target.kind === "chat") {
-      try {
-        await handleDeleteThread(target.item);
-      } catch (err) {
-        toast.error(translate("shell.toast.failedToDeleteChat"), {
-          description: err instanceof Error ? err.message : undefined,
-        });
-      }
+      await deleteChatWithCleanup(target.item);
       return;
     }
     if (target.kind === "project") {
@@ -584,6 +654,7 @@ export function AppSidebar() {
     item: SidebarItem,
     variant: "project" | "recent",
   ) {
+    const isPinned = pinnedIdSet.has(item.id);
     const itemClass =
       variant === "project"
         ? "group/project-chat-item relative"
@@ -594,13 +665,43 @@ export function AppSidebar() {
         : "sidebar-row-action group-hover/recent-item:opacity-100 group-hover/recent-item:pointer-events-auto focus-visible:opacity-100 focus-visible:pointer-events-auto";
     const buttonClass = cn(
       "sidebar-nav-btn h-[33px] cursor-pointer rounded-full pr-4 text-[14.5px] leading-[19px] tracking-nav font-medium",
-      // pl-3.5 starts the title at the same x as the Recents label text.
-      variant === "project" ? "pl-[39px]" : "pl-3.5",
+      // pl-3 (12px) plus the content's pl-1 (4px) lines the title up with the
+      // Recents label text at 16px.
+      variant === "project" ? "pl-[39px]" : "pl-3",
       variant === "project"
         ? "group-hover/project-chat-item:pr-8 group-has-[.sidebar-row-action[data-state=open]]/project-chat-item:pr-8"
-        : "group-hover/recent-item:pr-8 group-has-[.sidebar-row-action[data-state=open]]/recent-item:pr-8",
+        : isPinned
+          ? // Pinned rows show an extra unpin button on hover, so reserve more room.
+            "group-hover/recent-item:pr-16 group-has-[.sidebar-row-action[data-state=open]]/recent-item:pr-8"
+          : "group-hover/recent-item:pr-8 group-has-[.sidebar-row-action[data-state=open]]/recent-item:pr-8",
     );
 
+    const isRenamingThis =
+      renamingTarget?.kind === "chat" && renamingTarget.item.id === item.id;
+
+    // Inline rename edits the title in place as a rounded pill, no dialog.
+    if (isRenamingThis) {
+      return (
+        <SidebarMenuItem key={item.id} className={itemClass}>
+          <input
+            autoFocus
+            value={renameDraft}
+            onChange={(event) => setRenameDraft(event.target.value)}
+            onKeyDown={handleInlineRenameKeyDown}
+            onBlur={handleInlineRenameBlur}
+            onFocus={(event) => event.currentTarget.select()}
+            maxLength={120}
+            aria-label={translate("shell.dialog.renameChat.placeholder")}
+            className={cn(
+              // No pill or box; edit in place as plain highlighted text.
+              "text-foreground h-[33px] w-full border-0 bg-transparent pr-4 text-[14.5px] leading-[19px] font-medium tracking-nav outline-none",
+              variant === "project" ? "pl-[39px]" : "pl-3",
+            )}
+          />
+        </SidebarMenuItem>
+      );
+    }
+
     return (
       <SidebarMenuItem key={item.id} className={itemClass}>
         <SidebarMenuButton
@@ -626,7 +727,9 @@ export function AppSidebar() {
             closeMobileIfOpen();
           }}
         >
-          <span className="truncate">{item.title}</span>
+          <span className="truncate">
+            {pendingRename?.id === item.id ? pendingRename.title : item.title}
+          </span>
         </SidebarMenuButton>
         <DropdownMenu>
           <DropdownMenuTrigger asChild>
@@ -651,6 +754,10 @@ export function AppSidebar() {
               <HugeiconsIcon icon={Edit03Icon} strokeWidth={1.75} className="size-icon" />
               <span>Rename</span>
             </DropdownMenuItem>
+            <DropdownMenuItem onSelect={() => togglePinnedChat(item.id)}>
+              <HugeiconsIcon icon={isPinned ? PinOffIcon : PinIcon} strokeWidth={1.75} className="size-icon" />
+              <span>{isPinned ? "Unpin chat" : "Pin chat"}</span>
+            </DropdownMenuItem>
             <DropdownMenuSub>
               <DropdownMenuSubTrigger>
                 <HugeiconsIcon icon={FolderExportIcon} strokeWidth={1.75} className="size-icon" />
@@ -727,19 +834,46 @@ export function AppSidebar() {
                 </DropdownMenuItem>
               </DropdownMenuSubContent>
             </DropdownMenuSub>
+            <DropdownMenuSeparator />
             <DropdownMenuItem onSelect={() => void handleArchiveThread(item)}>
-              <HugeiconsIcon icon={Archive01Icon} strokeWidth={1.75} className="size-icon" />
+              <HugeiconsIcon icon={Archive03Icon} strokeWidth={1.75} className="size-icon" />
               <span>Archive</span>
             </DropdownMenuItem>
             <DropdownMenuItem
               variant="destructive"
-              onSelect={() => setConfirmingDelete({ kind: "chat", item })}
+              onSelect={() =>
+                confirmDeleteChats
+                  ? setConfirmingDelete({ kind: "chat", item })
+                  : void deleteChatWithCleanup(item)
+              }
             >
               <HugeiconsIcon icon={Delete02Icon} strokeWidth={1.75} className="size-icon" />
               <span>Delete</span>
             </DropdownMenuItem>
           </DropdownMenuContent>
         </DropdownMenu>
+        {isPinned ? (
+          <Tooltip>
+            <TooltipPrimitive.Trigger asChild>
+              <button
+                type="button"
+                onClick={(e) => {
+                  e.stopPropagation();
+                  unpinChat(item.id);
+                }}
+                aria-label="Unpin chat"
+                className={cn(actionClass, "is-unpin-action")}
+              >
+                <span className="sidebar-row-action-glyph">
+                  <HugeiconsIcon icon={PinOffIcon} strokeWidth={1.75} className="size-4" />
+                </span>
+              </button>
+            </TooltipPrimitive.Trigger>
+            <TooltipContent side="bottom" sideOffset={6} className="tooltip-compact">
+              Unpin
+            </TooltipContent>
+          </Tooltip>
+        ) : null}
       </SidebarMenuItem>
     );
   }
@@ -976,21 +1110,20 @@ export function AppSidebar() {
           </SidebarGroup>
         </Collapsible>
 
-        {!isStudioRoute && (
-          <Collapsible open={chatOpen} onOpenChange={setChatOpen} asChild>
+        {/* Pinned chats: own section above Recents */}
+        {!isStudioRoute && pinnedChatItems.length > 0 && (
+          <Collapsible open={pinnedOpen} onOpenChange={setPinnedOpen} asChild>
             <SidebarGroup className="group-data-[collapsible=icon]:hidden px-0 py-0">
               <SidebarGroupLabel className={cn("sidebar-sticky-label sidebar-sticky-label-following", scrolled && "is-scrolled")} asChild>
-                <div className="flex w-full items-center group/sb-collap">
-                  <CollapsibleTrigger className="cursor-pointer flex flex-1 items-center gap-1 min-w-0">
-                    {t("shell.navigation.recents")}
-                    <ChevronDown className="size-3.5 opacity-0 transition-[transform,opacity] duration-200 group-hover/sb-collap:opacity-100 group-focus-visible/sb-collap:opacity-100 data-[state=open]:rotate-0 [[data-state=closed]_&]:rotate-[-90deg] [[data-state=closed]_&]:opacity-100" />
-                  </CollapsibleTrigger>
-                </div>
+                <CollapsibleTrigger className="cursor-pointer flex w-full items-center gap-1 group/sb-collap">
+                  Pinned
+                  <ChevronDown className="size-3.5 opacity-0 transition-[transform,opacity] duration-200 group-hover/sb-collap:opacity-100 group-focus-visible/sb-collap:opacity-100 data-[state=open]:rotate-0 [[data-state=closed]_&]:rotate-[-90deg] [[data-state=closed]_&]:opacity-100" />
+                </CollapsibleTrigger>
               </SidebarGroupLabel>
               <CollapsibleContent>
                 <SidebarGroupContent className="pl-1 pr-1.5">
                   <SidebarMenu>
-                    {recentChatItems.map((item) =>
+                    {pinnedChatItems.map((item) =>
                       renderChatSidebarItem(item, "recent"),
                     )}
                   </SidebarMenu>
@@ -1000,78 +1133,21 @@ export function AppSidebar() {
           </Collapsible>
         )}
 
-        {/* Archived chats — hidden on Studio + when nothing is archived */}
-        {!isStudioRoute && archivedChatItems.length > 0 && (
-          <Collapsible open={archivedOpen} onOpenChange={setArchivedOpen} asChild>
+        {!isStudioRoute && (
+          <Collapsible open={chatOpen} onOpenChange={setChatOpen} asChild>
             <SidebarGroup className="group-data-[collapsible=icon]:hidden px-0 py-0">
               <SidebarGroupLabel className={cn("sidebar-sticky-label sidebar-sticky-label-following", scrolled && "is-scrolled")} asChild>
                 <CollapsibleTrigger className="cursor-pointer flex w-full items-center gap-1 group/sb-collap">
-                  Archived
+                  {t("shell.navigation.recents")}
                   <ChevronDown className="size-3.5 opacity-0 transition-[transform,opacity] duration-200 group-hover/sb-collap:opacity-100 group-focus-visible/sb-collap:opacity-100 data-[state=open]:rotate-0 [[data-state=closed]_&]:rotate-[-90deg] [[data-state=closed]_&]:opacity-100" />
                 </CollapsibleTrigger>
               </SidebarGroupLabel>
               <CollapsibleContent>
-                <SidebarGroupContent className="px-1.5">
+                <SidebarGroupContent className="pl-1 pr-1.5">
                   <SidebarMenu>
-                    {archivedChatItems.map((item) => (
-                      <SidebarMenuItem key={item.id} className="group/archived-item relative">
-                        <SidebarMenuButton
-                          data-testid="archived-thread"
-                          data-thread-type={item.type}
-                          data-thread-id={item.id}
-                          isActive={activeThreadId === item.id}
-                          className="sidebar-nav-btn h-[33px] cursor-pointer rounded-full pl-3.5 pr-4 group-hover/archived-item:pr-8 group-has-[.sidebar-row-action[data-state=open]]/archived-item:pr-8 text-[14.5px] leading-[19px] tracking-nav font-medium text-muted-foreground"
-                          onClick={() => {
-                            navigate({
-                              to: "/chat",
-                              search:
-                                item.type === "single"
-                                  ? { thread: item.id }
-                                  : { compare: item.id },
-                            });
-                            closeMobileIfOpen();
-                          }}
-                        >
-                          <span className="truncate">{item.title}</span>
-                        </SidebarMenuButton>
-                        <DropdownMenu>
-                          <DropdownMenuTrigger asChild>
-                            <button
-                              type="button"
-                              onClick={(e) => e.stopPropagation()}
-                              aria-label="Archived chat options"
-                              className="sidebar-row-action group-hover/archived-item:opacity-100 group-hover/archived-item:pointer-events-auto focus-visible:opacity-100 focus-visible:pointer-events-auto"
-                            >
-                              <span className="sidebar-row-action-glyph">
-                                <HugeiconsIcon icon={MoreVerticalIcon} strokeWidth={1.75} className="size-icon" />
-                              </span>
-                            </button>
-                          </DropdownMenuTrigger>
-                          <DropdownMenuContent
-                            side="bottom"
-                            align="start"
-                            sideOffset={0}
-                            className="unsloth-plus-menu menu-flat-destructive w-52"
-                          >
-                            <DropdownMenuItem onSelect={() => openRenameChat(item)}>
-                              <HugeiconsIcon icon={Edit03Icon} strokeWidth={1.75} className="size-icon" />
-                              <span>Rename</span>
-                            </DropdownMenuItem>
-                            <DropdownMenuItem onSelect={() => void handleUnarchiveThread(item)}>
-                              <HugeiconsIcon icon={ArchiveRestoreIcon} strokeWidth={1.75} className="size-icon" />
-                              <span>Unarchive</span>
-                            </DropdownMenuItem>
-                            <DropdownMenuItem
-                              variant="destructive"
-                              onSelect={() => setConfirmingDelete({ kind: "chat", item })}
-                            >
-                              <HugeiconsIcon icon={Delete02Icon} strokeWidth={1.75} className="size-icon" />
-                              <span>Delete</span>
-                            </DropdownMenuItem>
-                          </DropdownMenuContent>
-                        </DropdownMenu>
-                      </SidebarMenuItem>
-                    ))}
+                    {recentChatItems.map((item) =>
+                      renderChatSidebarItem(item, "recent"),
+                    )}
                   </SidebarMenu>
                 </SidebarGroupContent>
               </CollapsibleContent>
@@ -1252,23 +1328,24 @@ export function AppSidebar() {
                         : t("shell.navigation.darkMode")}
                     </span>
                   </DropdownMenuItem>
-                  <DropdownMenuItem
-                    disabled={!getTourId(pathname)}
-                    onSelect={() => {
-                      const tourId = getTourId(pathname);
-                      if (!tourId) return;
-                      window.dispatchEvent(
-                        new CustomEvent(TOUR_OPEN_EVENT, {
-                          detail: { id: tourId },
-                        }),
-                      );
-                    }}
-                  >
-                    <HugeiconsIcon icon={CursorInfo02Icon} strokeWidth={1.75} className="size-icon" />
-                    <span>{t("shell.navigation.guidedTour")}</span>
-                  </DropdownMenuItem>
+                  {getTourId(pathname) && (
+                    <DropdownMenuItem
+                      onSelect={() => {
+                        const tourId = getTourId(pathname);
+                        if (!tourId) return;
+                        window.dispatchEvent(
+                          new CustomEvent(TOUR_OPEN_EVENT, {
+                            detail: { id: tourId },
+                          }),
+                        );
+                      }}
+                    >
+                      <HugeiconsIcon icon={CursorInfo02Icon} strokeWidth={1.75} className="size-icon" />
+                      <span>{t("shell.navigation.guidedTour")}</span>
+                    </DropdownMenuItem>
+                  )}
                 </DropdownMenuGroup>
-                <DropdownMenuSeparator className="mx-2.5! my-2.5! h-0! border-t border-border/70 bg-transparent!" />
+                <DropdownMenuSeparator className="mx-1! my-2.5! h-0! border-t border-border/70 bg-transparent!" />
                 <DropdownMenuItem
                   onSelect={() => useSettingsDialogStore.getState().openDialog("about")}
                 >
@@ -1390,7 +1467,7 @@ export function AppSidebar() {
       </DialogContent>
     </Dialog>
     <Dialog
-      open={renamingTarget !== null}
+      open={renamingTarget !== null && renamingTarget.kind !== "chat"}
       onOpenChange={(open) => {
         if (!open) setRenamingTarget(null);
       }}

studio/frontend/src/components/assistant-ui/model-selector.tsx

@@ -13,13 +13,13 @@ import { usePlatformStore } from "@/config/env";
 import { isCustomProviderType } from "@/features/chat/external-providers";
 import { cn } from "@/lib/utils";
 import {
-  ArrowDown01Icon,
   CloudIcon,
   DashboardSquare01Icon,
   FolderSearchIcon,
   RemoveCircleIcon,
   Search01Icon,
 } from "@hugeicons/core-free-icons";
+import { ChevronDownStandardIcon } from "@/lib/chevron-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
 import { type KeyboardEvent, useMemo, useState } from "react";
 import { Input } from "../ui/input";
@@ -151,9 +151,11 @@ function ModelSelectorTrigger({
           "rounded-full border border-border/60 hover:bg-[#ececec] dark:hover:bg-[#2d2e32]",
           variant === "ghost" && "rounded-full hover:bg-[#ececec] dark:hover:bg-[#2d2e32]",
           variant === "muted" && "rounded-full bg-muted hover:bg-muted/80",
-          size === "sm" && "h-8 px-2.5 text-xs",
-          size === "default" && "h-9 px-3 text-sm",
-          size === "lg" && "h-10 px-3.5 text-sm",
+          // More left padding than right; the chevron is pulled close to the
+          // label (below) so the trigger reads balanced around the text.
+          size === "sm" && "h-8 pl-3 pr-1.5 text-xs",
+          size === "default" && "h-9 pl-4 pr-2 text-sm",
+          size === "lg" && "h-10 pl-4.5 pr-2.5 text-sm",
           className,
         )}
       >
@@ -185,9 +187,9 @@ function ModelSelectorTrigger({
             </span>
           )}
         </span>
-        <span className="flex size-4 shrink-0 items-center justify-center">
+        <span className="-ml-1 flex size-4 shrink-0 items-center justify-center">
           <HugeiconsIcon
-            icon={ArrowDown01Icon}
+            icon={ChevronDownStandardIcon}
             strokeWidth={1.75}
             className="size-3.5 text-muted-foreground"
           />

studio/frontend/src/components/assistant-ui/thread.tsx

@@ -783,13 +783,14 @@ const ThreadWelcome: FC<{
   threadId?: string | null;
 }> = ({ hideComposer, threadId }) => {
   const displayName = useUserProfileStore((s) => s.displayName);
+  const nickname = useUserProfileStore((s) => s.nickname);
   const [welcome, setWelcome] = useState<Welcome>(DEFAULT_WELCOME);
 
   useEffect(() => {
-    // First name only, for a natural greeting; blank falls back to no name.
-    const name = displayName.trim().split(/\s+/)[0] ?? "";
+    // Prefer the nickname; otherwise first name only. Blank falls back to none.
+    const name = nickname.trim() || (displayName.trim().split(/\s+/)[0] ?? "");
     setWelcome(buildWelcome(new Date().getHours(), name));
-  }, [displayName]);
+  }, [displayName, nickname]);
 
   const currentEmojiSrc = `Sloth emojis/${welcome.sloth}`;
 

studio/frontend/src/components/llama-update-banner.tsx

@@ -203,11 +203,11 @@ export function LlamaUpdateBanner({
                 />
               </div>
             ) : (
-              <div className="mt-4 flex flex-wrap items-center justify-between gap-y-2">
+              <div className="mt-4 flex flex-wrap items-center justify-end gap-x-1 gap-y-2">
                 <Button
                   size="sm"
                   variant="ghost"
-                  className="-ml-2 h-auto rounded-full px-2.5 py-2 text-[13px] font-medium text-foreground"
+                  className="h-auto rounded-full px-3 py-2 text-[13px] font-medium text-foreground"
                   onClick={snooze}
                   data-testid="llama-update-snooze-button"
                 >
@@ -215,8 +215,8 @@ export function LlamaUpdateBanner({
                 </Button>
                 <Button
                   size="sm"
-                  // ml offsets the pill's filled edge so visual gaps stay equal
-                  className="ml-2.5 h-auto rounded-full px-3.5 py-2 text-[13px]"
+                  // -mr optically aligns the filled pill's edge with the card padding
+                  className="-mr-1 h-auto rounded-full px-3.5 py-2 text-[13px]"
                   onClick={handleUpdate}
                   data-testid="llama-update-button"
                 >

studio/frontend/src/components/ui/alert-dialog.tsx

@@ -37,7 +37,7 @@ function AlertDialogOverlay({
     <AlertDialogPrimitive.Overlay
       data-slot="alert-dialog-overlay"
       className={cn(
-        "data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 bg-black/80 duration-100 supports-backdrop-filter:backdrop-blur-xs fixed inset-0 z-50",
+        "data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 bg-black/30 duration-100 supports-backdrop-filter:backdrop-blur-[2px] fixed inset-0 z-50",
         className,
       )}
       {...props}

studio/frontend/src/components/ui/dialog.tsx

@@ -53,7 +53,7 @@ function DialogOverlay({
     <DialogPrimitive.Overlay
       data-slot="dialog-overlay"
       className={cn(
-        "data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 bg-black/80 duration-100  inset-0 isolate z-50",
+        "data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 bg-black/30 supports-backdrop-filter:backdrop-blur-[2px] duration-100  inset-0 isolate z-50",
         position === "fixed" ? "fixed" : "absolute",
         className,
       )}
@@ -89,7 +89,7 @@ function DialogContent({
         <DialogPrimitive.Content
           data-slot="dialog-content"
           className={cn(
-            "bg-background data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 data-closed:zoom-out-95 data-open:zoom-in-95 ring-foreground/5 grid max-w-[calc(100%-2rem)] gap-6 rounded-4xl p-6 text-sm ring-1 duration-100 sm:max-w-md top-1/2 left-1/2 z-50 w-full -translate-x-1/2 -translate-y-1/2",
+            "bg-background data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 data-closed:zoom-out-95 data-open:zoom-in-95 ring-foreground/5 grid max-w-[calc(100%-2rem)] gap-6 rounded-4xl px-7 pt-8 pb-7 text-sm ring-1 duration-100 sm:max-w-md top-1/2 left-1/2 z-50 w-full -translate-x-1/2 -translate-y-1/2",
             position === "fixed" ? "fixed" : "absolute",
             className,
           )}
@@ -100,7 +100,7 @@ function DialogContent({
             <DialogPrimitive.Close data-slot="dialog-close" asChild>
               <Button
                 variant="ghost"
-                className="absolute top-4 right-4"
+                className="absolute top-5 right-5"
                 size="icon-sm"
               >
                 <HugeiconsIcon icon={Cancel01Icon} strokeWidth={2} />
@@ -158,7 +158,7 @@ function DialogTitle({
   return (
     <DialogPrimitive.Title
       data-slot="dialog-title"
-      className={cn("text-base leading-none font-medium", className)}
+      className={cn("font-heading text-lg leading-none font-semibold", className)}
       {...props}
     />
   );

studio/frontend/src/components/ui/dropdown-menu.tsx

@@ -5,8 +5,8 @@ import { DropdownMenu as DropdownMenuPrimitive } from "radix-ui";
 import type * as React from "react";
 
 import { Tick02Icon } from "@/lib/tick-icon";
+import { ChevronRightStandardIcon } from "@/lib/chevron-icons";
 import { cn } from "@/lib/utils";
-import { ArrowRight01Icon } from "@hugeicons/core-free-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
 
 function DropdownMenu({
@@ -184,7 +184,7 @@ function DropdownMenuSeparator({
   return (
     <DropdownMenuPrimitive.Separator
       data-slot="dropdown-menu-separator"
-      className={cn("bg-border/50 -mx-1 my-1 h-px", className)}
+      className={cn("bg-border/50 mx-1 my-1 h-px", className)}
       {...props}
     />
   );
@@ -232,8 +232,8 @@ function DropdownMenuSubTrigger({
     >
       {children}
       <HugeiconsIcon
-        icon={ArrowRight01Icon}
-        strokeWidth={2}
+        icon={ChevronRightStandardIcon}
+        strokeWidth={1.5}
         className="ml-auto size-[12px]"
       />
     </DropdownMenuPrimitive.SubTrigger>

studio/frontend/src/components/ui/menubar.tsx

@@ -8,7 +8,7 @@ import type * as React from "react";
 
 import { Tick02Icon } from "@/lib/tick-icon";
 import { cn } from "@/lib/utils";
-import { ArrowRight01Icon } from "@hugeicons/core-free-icons";
+import { ChevronRightStandardIcon } from "@/lib/chevron-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
 
 function Menubar({
@@ -241,8 +241,8 @@ function MenubarSubTrigger({
     >
       {children}
       <HugeiconsIcon
-        icon={ArrowRight01Icon}
-        strokeWidth={2}
+        icon={ChevronRightStandardIcon}
+        strokeWidth={1.5}
         className="ml-auto size-[12px]"
       />
     </MenubarPrimitive.SubTrigger>

studio/frontend/src/components/ui/sheet.tsx

@@ -44,7 +44,7 @@ function SheetOverlay({
     <SheetPrimitive.Overlay
       data-slot="sheet-overlay"
       className={cn(
-        "data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 bg-black/80 duration-100 data-ending-style:opacity-0 data-starting-style:opacity-0 supports-backdrop-filter:backdrop-blur-xs inset-0 z-50",
+        "data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 bg-black/30 duration-100 data-ending-style:opacity-0 data-starting-style:opacity-0 supports-backdrop-filter:backdrop-blur-[2px] inset-0 z-50",
         position === "fixed" ? "fixed" : "absolute",
         className,
       )}

studio/frontend/src/components/web/update-banner.tsx

@@ -137,24 +137,27 @@ export function WebUpdateBanner({
               >
                 Release notes
               </a>
-              <Button
-                size="sm"
-                variant="ghost"
-                className="h-auto rounded-full px-2.5 py-2 text-[13px] font-medium text-foreground"
-                onClick={snooze}
-                data-testid="web-update-snooze-button"
-              >
-                Remind me later
-              </Button>
-              <Button
-                size="sm"
-                // ml offsets the pill's filled edge so visual gaps stay equal
-                className="ml-2.5 h-auto rounded-full px-3.5 py-2 text-[13px]"
-                onClick={handleCopyCommand}
-                data-testid="web-update-copy-button"
-              >
-                {copied ? "Copied" : "Copy command"}
-              </Button>
+              {/* wrap + right-align so buttons stack instead of clipping on very narrow banners */}
+              <div className="flex flex-wrap items-center justify-end gap-x-1 gap-y-2">
+                <Button
+                  size="sm"
+                  variant="ghost"
+                  className="h-auto rounded-full px-3 py-2 text-[13px] font-medium text-foreground"
+                  onClick={snooze}
+                  data-testid="web-update-snooze-button"
+                >
+                  Remind me later
+                </Button>
+                <Button
+                  size="sm"
+                  // -mr optically aligns the filled pill's edge with the card padding
+                  className="-mr-1 h-auto rounded-full px-3.5 py-2 text-[13px]"
+                  onClick={handleCopyCommand}
+                  data-testid="web-update-copy-button"
+                >
+                  {copied ? "Copied" : "Copy command"}
+                </Button>
+              </div>
             </div>
           </div>
         </motion.div>

studio/frontend/src/features/auth/components/auth-form.tsx

@@ -443,7 +443,7 @@ export function AuthForm({ mode }: AuthFormProps): ReactElement | null {
 
         <Button
           type="submit"
-          className="mx-auto flex w-fit px-8"
+          className="mx-auto flex w-fit px-4"
           disabled={
             loading ||
             statusLoading ||

studio/frontend/src/features/chat/chat-settings-sheet.tsx

@@ -53,12 +53,12 @@ import { useIsMobile } from "@/hooks/use-mobile";
 import { useLlamaUpdateCheck } from "@/hooks/use-llama-update-check";
 import { cn } from "@/lib/utils";
 import {
-  ArrowDown01Icon,
   ArrowTurnBackwardIcon,
   Edit03Icon,
   InformationCircleIcon,
   LayoutAlignRightIcon,
 } from "@hugeicons/core-free-icons";
+import { ChevronDownStandardIcon } from "@/lib/chevron-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
 import { ChevronDown, ExternalLink } from "lucide-react";
 import { Tooltip as TooltipPrimitive } from "radix-ui";
@@ -911,7 +911,7 @@ export function ChatSettingsPanel({
                     >
                       <SelectTrigger
                         animateRadius={false}
-                        icon={ArrowDown01Icon}
+                        icon={ChevronDownStandardIcon}
                         iconClassName="size-3.5"
                         className="grid h-7 w-[64px] min-w-0 grid-cols-[minmax(0,1fr)_auto] items-center gap-1 rounded-full border-transparent bg-black/[0.04] dark:bg-white/[0.05] hover:bg-black/[0.06] dark:hover:bg-white/[0.1] pl-3 pr-2 py-0 text-[13px]! font-medium text-nav-fg focus-visible:ring-0 focus-visible:border-transparent [&_[data-slot=select-value]]:min-w-0 [&_[data-slot=select-value]]:truncate [&>svg]:shrink-0"
                       >
@@ -951,7 +951,7 @@ export function ChatSettingsPanel({
                     >
                       <SelectTrigger
                         animateRadius={false}
-                        icon={ArrowDown01Icon}
+                        icon={ChevronDownStandardIcon}
                         iconClassName="size-3.5"
                         className="grid h-7 w-[124px] min-w-0 grid-cols-[minmax(0,1fr)_auto] items-center gap-1 rounded-full border-transparent bg-black/[0.04] dark:bg-white/[0.05] hover:bg-black/[0.06] dark:hover:bg-white/[0.1] pl-3 pr-2 py-0 text-[13px]! font-medium text-nav-fg focus-visible:ring-0 focus-visible:border-transparent [&_[data-slot=select-value]]:min-w-0 [&_[data-slot=select-value]]:truncate [&>svg]:shrink-0"
                         data-test-id="speculative-type-select"
@@ -1172,7 +1172,7 @@ export function ChatSettingsPanel({
                         aria-hidden="true"
                       >
                         <HugeiconsIcon
-                          icon={ArrowDown01Icon}
+                          icon={ChevronDownStandardIcon}
                           className="size-3.5"
                           strokeWidth={2}
                         />
@@ -1547,10 +1547,7 @@ export function ChatSettingsPanel({
           setSystemPromptEditorOpen(nextOpen);
         }}
       >
-        <DialogContent
-          className="corner-squircle dialog-soft-surface sm:max-w-3xl"
-          overlayClassName="bg-background/35 supports-backdrop-filter:backdrop-blur-[1px]"
-        >
+        <DialogContent className="corner-squircle dialog-soft-surface sm:max-w-3xl">
           <DialogHeader>
             <DialogTitle>Edit System Prompt</DialogTitle>
             <DialogDescription>
@@ -1827,10 +1824,7 @@ function ChatTemplateFields() {
         </div>
       </div>
       <Dialog open={editorOpen} onOpenChange={setEditorOpen}>
-        <DialogContent
-          className="corner-squircle dialog-soft-surface sm:max-w-3xl"
-          overlayClassName="bg-background/35 supports-backdrop-filter:backdrop-blur-[1px]"
-        >
+        <DialogContent className="corner-squircle dialog-soft-surface sm:max-w-3xl">
           <DialogHeader>
             <DialogTitle>Edit Chat Template</DialogTitle>
             <DialogDescription>

studio/frontend/src/features/chat/components/model-load-status.tsx

@@ -50,8 +50,8 @@ export function ModelLoadDescription({
       <div className="flex h-full shrink-0 items-center self-center">
         <Spinner className="size-3.5 text-muted-foreground" />
       </div>
-      <div className="min-w-0 flex-1">
-        {title ? <p className="text-foreground leading-5 font-semibold">{title}</p> : null}
+      <div className="flex min-w-0 flex-1 flex-col justify-center">
+        {title ? <p className="text-foreground leading-tight font-semibold">{title}</p> : null}
         {hasProgress ? (
           <div className="w-full pt-1">
             <div className="flex items-center justify-between gap-2 text-[10px] font-medium tracking-[0.08em] text-muted-foreground/80">

studio/frontend/src/features/chat/components/project-switcher.tsx

@@ -8,11 +8,9 @@ import {
   DropdownMenuSeparator,
   DropdownMenuTrigger,
 } from "@/components/ui/dropdown-menu";
-import {
-  ArrowDown01Icon,
-  Folder01Icon,
-} from "@hugeicons/core-free-icons";
+import { Folder01Icon } from "@hugeicons/core-free-icons";
 import { Tick02Icon } from "@/lib/tick-icon";
+import { ChevronDownStandardIcon } from "@/lib/chevron-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
 import type { ReactElement } from "react";
 import type { ProjectRecord } from "../types";
@@ -60,7 +58,7 @@ export function ProjectSwitcher({
           </span>
           <span className="flex size-4 shrink-0 items-center justify-center">
             <HugeiconsIcon
-              icon={ArrowDown01Icon}
+              icon={ChevronDownStandardIcon}
               strokeWidth={1.75}
               className="size-3.5 text-muted-foreground"
               aria-hidden={true}
@@ -72,7 +70,7 @@ export function ProjectSwitcher({
         side="bottom"
         align="start"
         sideOffset={0}
-        className="app-user-menu menu-soft-surface ring-0 min-w-56 max-w-72 max-h-72 py-2 font-heading rounded-[14px] border-0"
+        className="unsloth-plus-menu ring-0 min-w-56 max-w-72 max-h-72 font-heading"
       >
         {showLoadingRow ? (
           <DropdownMenuItem disabled={true} className="text-muted-foreground">

studio/frontend/src/features/chat/index.ts

@@ -18,6 +18,8 @@ export {
 } from "./chat-settings-sheet";
 export { useChatRuntimeStore } from "./stores/chat-runtime-store";
 export { useChatSearchStore } from "./stores/chat-search-store";
+export { usePinnedChatsStore } from "./stores/pinned-chats-store";
+export { useChatPreferencesStore } from "./stores/chat-preferences-store";
 export {
   PLUS_MENU_ORDER,
   usePlusMenuPrefsStore,

studio/frontend/src/features/chat/runtime-provider.tsx

@@ -609,7 +609,10 @@ function createStudioDbAdapter(
       }
       return {
         remoteId: thread.id,
-        status: thread.archived ? "archived" : "regular",
+        // Always regular: archive state is owned by the app's own controls.
+        // Reporting archived here makes assistant-ui unarchive a chat the
+        // moment it is opened.
+        status: "regular",
         title: thread.title,
       };
     },
@@ -658,8 +661,10 @@ function createStudioDbAdapter(
     },
 
     async unarchive(remoteId: string) {
+      // No-op on archive state: the app owns it via the sidebar menu and the
+      // archived chats settings dialog. assistant-ui calls this when an
+      // archived chat is opened, which must not unarchive it.
       await ensureStoredChatThread(remoteId);
-      await updateStoredChatThread(remoteId, { archived: false });
     },
 
     async delete(remoteId: string) {

studio/frontend/src/features/chat/stores/chat-preferences-store.ts

@@ -0,0 +1,32 @@
+// 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 { create } from "zustand";
+import { persist } from "zustand/middleware";
+
+// Client-side chat UI prefs kept in localStorage, not the chat DB.
+// confirmDeleteChats: when off, deleting a chat skips the confirm dialog.
+export interface ChatPreferencesState {
+  confirmDeleteChats: boolean;
+  setConfirmDeleteChats: (value: boolean) => void;
+}
+
+export const useChatPreferencesStore = create<ChatPreferencesState>()(
+  persist(
+    (set) => ({
+      confirmDeleteChats: true,
+      setConfirmDeleteChats: (confirmDeleteChats) =>
+        set({ confirmDeleteChats }),
+    }),
+    {
+      name: "unsloth_chat_preferences",
+      merge: (persisted, current) => {
+        const saved = persisted as Partial<ChatPreferencesState> | undefined;
+        return {
+          ...current,
+          confirmDeleteChats: saved?.confirmDeleteChats ?? true,
+        };
+      },
+    },
+  ),
+);

studio/frontend/src/features/chat/stores/pinned-chats-store.ts

@@ -0,0 +1,42 @@
+// 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 { create } from "zustand";
+import { persist } from "zustand/middleware";
+
+// Client-side pin state for chats, keyed by stable chat id. Kept in
+// localStorage, not the chat DB. New pins are prepended so the most
+// recently pinned chat sorts first in the Pinned section.
+export interface PinnedChatsState {
+  pinnedIds: string[];
+  togglePin: (id: string) => void;
+  unpin: (id: string) => void;
+}
+
+export const usePinnedChatsStore = create<PinnedChatsState>()(
+  persist(
+    (set) => ({
+      pinnedIds: [],
+      togglePin: (id) =>
+        set((state) => ({
+          pinnedIds: state.pinnedIds.includes(id)
+            ? state.pinnedIds.filter((x) => x !== id)
+            : [id, ...state.pinnedIds],
+        })),
+      unpin: (id) =>
+        set((state) => ({
+          pinnedIds: state.pinnedIds.filter((x) => x !== id),
+        })),
+    }),
+    {
+      name: "unsloth_pinned_chats",
+      merge: (persisted, current) => {
+        const saved = persisted as Partial<PinnedChatsState> | undefined;
+        return {
+          ...current,
+          pinnedIds: Array.isArray(saved?.pinnedIds) ? saved.pinnedIds : [],
+        };
+      },
+    },
+  ),
+);

studio/frontend/src/features/data-recipes/pages/data-recipes-page.tsx

@@ -400,7 +400,7 @@ export function DataRecipesPage(): ReactElement {
 
   return (
     <div className="min-h-[calc(100dvh-var(--studio-titlebar-height,0px))] bg-background">
-      <main className="mx-auto w-full max-w-7xl px-6 py-8">
+      <main className="mx-auto w-full max-w-7xl px-5 py-8 sm:px-9">
         <div className="flex items-center justify-between gap-4">
           <div>
             <h1 className="text-[30px] font-semibold leading-[1.04] tracking-[-0.028em] text-foreground sm:text-[34px]">

studio/frontend/src/features/export/export-page.tsx

@@ -583,7 +583,7 @@ export function ExportPage() {
   // ---- Render ----
   return (
     <div className="min-h-[calc(100dvh-var(--studio-titlebar-height,0px))] bg-background">
-      <main className="mx-auto max-w-7xl px-4 py-8 sm:px-6">
+      <main className="mx-auto max-w-7xl px-5 py-8 sm:px-9">
         <GuidedTour {...tour.tourProps} />
 
         <div className="mb-8 flex flex-col gap-0.5">

studio/frontend/src/features/hub/catalog/external-link-confirm-dialog.tsx

@@ -39,11 +39,11 @@ export function ExternalLinkConfirmDialog() {
     >
       <AlertDialogContent>
         <AlertDialogHeader>
-          <AlertDialogMedia>
+          <AlertDialogMedia className="size-12">
             <HugeiconsIcon
               icon={LinkSquare02Icon}
               strokeWidth={1.75}
-              className="text-muted-foreground"
+              className="size-5 text-muted-foreground"
             />
           </AlertDialogMedia>
           <AlertDialogTitle>Open external link</AlertDialogTitle>

studio/frontend/src/features/hub/catalog/gguf-download-card.tsx

@@ -26,9 +26,9 @@ import {
   normalizeGgufVariantIdentity,
 } from "../lib/model-identity";
 import { cn } from "@/lib/utils";
+import { ChevronDownStandardIcon } from "@/lib/chevron-icons";
 import { useHfTokenStore } from "../stores/hf-token-store";
 import {
-  ArrowDown01Icon,
   Delete02Icon,
   Download01Icon,
   InformationCircleIcon,
@@ -666,7 +666,7 @@ export function GgufDownloadCard({
                 e.preventDefault();
                 setOpen((o) => !o);
               }}
-              className="hub-menu-trigger flex h-9 min-w-0 flex-1 cursor-pointer items-center gap-2.5 rounded-[12px] px-3 text-left transition-colors hover:bg-foreground/[0.04] data-[state=open]:bg-foreground/[0.06] dark:hover:bg-white/[0.1] dark:data-[state=open]:bg-white/[0.06]"
+              className="hub-menu-trigger flex h-9 min-w-0 flex-1 cursor-pointer items-center gap-2.5 rounded-full px-3 text-left transition-colors hover:bg-foreground/[0.04] data-[state=open]:bg-foreground/[0.06] dark:hover:bg-white/[0.1] dark:data-[state=open]:bg-white/[0.06]"
             >
               {selected ? (
                 <QuantBadge
@@ -713,7 +713,7 @@ export function GgufDownloadCard({
                     </span>
                   )}
                 <HugeiconsIcon
-                  icon={ArrowDown01Icon}
+                  icon={ChevronDownStandardIcon}
                   strokeWidth={1.25}
                   className="ml-0.5 size-3.5 shrink-0"
                 />
@@ -831,7 +831,11 @@ export function GgufDownloadCard({
             </>
           ) : selected?.downloaded ? (
             <>
-              <HugeiconsIcon icon={PlayIcon} strokeWidth={1.75} />
+              <HugeiconsIcon
+                icon={PlayIcon}
+                strokeWidth={1.75}
+                className="translate-x-px"
+              />
               Run
             </>
           ) : (

studio/frontend/src/features/hub/catalog/hub-option-menu.tsx

@@ -7,8 +7,8 @@ import {
   PopoverTrigger,
 } from "@/components/ui/popover";
 import { Tick02Icon } from "@/lib/tick-icon";
+import { ChevronDownStandardIcon } from "@/lib/chevron-icons";
 import { cn } from "@/lib/utils";
-import { ArrowDown01Icon } from "@hugeicons/core-free-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
 import {
   type KeyboardEvent,
@@ -156,7 +156,7 @@ export function HubOptionMenu<T extends string>({
           aria-label={ariaLabel}
           title={title}
           className={cn(
-            "field-trigger hub-menu-trigger field-soft field-filter inline-flex h-9 shrink-0 cursor-pointer items-center justify-between gap-2 rounded-full px-3 text-[12.5px] transition-colors",
+            "field-trigger hub-menu-trigger field-soft field-filter inline-flex h-9 shrink-0 cursor-pointer items-center justify-between gap-0.5 rounded-full pl-3 pr-2 text-[12.5px] transition-colors",
             "focus-visible:border-border focus-visible:ring-0 focus-visible:ring-offset-0",
             className,
           )}
@@ -167,14 +167,18 @@ export function HubOptionMenu<T extends string>({
             }
           }}
         >
-          <span className="flex min-w-0 items-center gap-2 truncate">
-            {triggerContent ?? selected?.triggerLabel ?? selected?.label ?? value}
+          <span className="flex min-w-0 items-center gap-2">
+            {triggerContent ?? (
+              <span className="min-w-0 truncate">
+                {selected?.triggerLabel ?? selected?.label ?? value}
+              </span>
+            )}
           </span>
           {showChevron && (
             <HugeiconsIcon
-              icon={ArrowDown01Icon}
+              icon={ChevronDownStandardIcon}
               strokeWidth={1.5}
-              className="size-3.5 shrink-0 text-muted-foreground"
+              className="size-3 shrink-0 text-muted-foreground"
             />
           )}
         </button>
@@ -186,7 +190,7 @@ export function HubOptionMenu<T extends string>({
         collisionPadding={12}
         onCloseAutoFocus={(event) => event.preventDefault()}
         className={cn(
-          "hub-menu-instant menu-soft-surface w-max min-w-[var(--radix-popover-trigger-width)] max-w-[min(var(--radix-popover-content-available-width),calc(100vw-1rem))] rounded-[22px] px-2.5 py-2 ring-0",
+          "hub-menu-instant menu-soft-surface w-max min-w-[var(--radix-popover-trigger-width)] max-w-[min(var(--radix-popover-content-available-width),calc(100vw-1rem))] rounded-[21px] px-[9px] py-2 ring-0",
           contentClassName,
         )}
       >
@@ -215,14 +219,14 @@ export function HubOptionMenu<T extends string>({
                 }}
                 onPointerEnter={() => activateIndex(index)}
                 className={cn(
-                  "relative flex w-full min-w-0 cursor-pointer select-none items-center rounded-[12px] py-2 pr-8 pl-3 text-left text-sm leading-snug outline-none transition-colors",
+                  "relative flex w-full min-w-0 cursor-pointer select-none items-center gap-2.5 rounded-[12px] py-2 px-3 text-left text-sm leading-snug outline-none transition-colors",
                 )}
               >
                 <span className="flex min-w-0 flex-1 items-center gap-2.5 overflow-hidden whitespace-normal break-words">
                   {option.label}
                 </span>
                 {selectedOption && (
-                  <span className="pointer-events-none absolute right-2 flex size-4 items-center justify-center">
+                  <span className="pointer-events-none flex size-4 shrink-0 items-center justify-center">
                     <HugeiconsIcon
                       icon={Tick02Icon}
                       strokeWidth={2}

studio/frontend/src/features/hub/catalog/local-on-device-card.tsx

@@ -28,9 +28,9 @@ import { ggufVariantsMatch } from "../lib/model-identity";
 import { cn } from "@/lib/utils";
 import { confirmExternalLink } from "../stores/external-link-confirm";
 import { useHfTokenStore } from "../stores/hf-token-store";
+import { ChevronDownStandardIcon } from "@/lib/chevron-icons";
 import {
   Alert02Icon,
-  ArrowDown01Icon,
   CubeIcon,
   PencilEdit02Icon,
   PlayIcon,
@@ -349,7 +349,7 @@ export function LocalOnDeviceCard({
                         </span>
                       )}
                       <HugeiconsIcon
-                        icon={ArrowDown01Icon}
+                        icon={ChevronDownStandardIcon}
                         strokeWidth={1.5}
                         className="size-3 shrink-0"
                       />

studio/frontend/src/features/hub/catalog/models-catalog-rows.tsx

@@ -232,7 +232,7 @@ function CatalogRow({
       data-active={active || undefined}
       onPointerEnter={arm}
       onFocusCapture={arm}
-      className="catalog-row group/row relative block w-full select-none overflow-hidden rounded-[14px] pl-3 pr-2.5 py-2.5 text-left"
+      className="catalog-row group/row relative block w-full select-none overflow-hidden rounded-[14px] pl-3 pr-4 py-2.5 text-left"
     >
       <button
         type="button"

studio/frontend/src/features/hub/catalog/models-catalog.tsx

@@ -273,7 +273,7 @@ export const ModelsCatalog = memo(function ModelsCatalog({
   // inactive pane's scrollTop to 0 and corrupt our mirror. Visibility +
   // pointer-events-none hides it while preserving native scroll state.
   const scrollPaneClassName =
-    "absolute inset-0 min-h-0 overflow-y-auto pb-6 pl-5 pr-3 pt-0 [overflow-anchor:none] [scrollbar-gutter:stable] [scrollbar-width:thin]";
+    "absolute inset-0 min-h-0 overflow-y-auto pb-6 pl-4 pr-3 pt-0 [overflow-anchor:none] [scrollbar-gutter:stable] [scrollbar-width:thin]";
   const discoverActive = tab === "discover";
   const downloadedActive = tab === "downloaded";
   const discoverInactiveHeight = Math.max(

studio/frontend/src/features/hub/catalog/models-header.tsx

@@ -77,7 +77,7 @@ export function ModelsHeader({
         subtitle={
           isDataset
             ? "Discover, download, and train on datasets locally."
-            : "Discover, download, and run inference models locally."
+            : "Discover, download, and run models locally."
         }
       />
 

studio/frontend/src/features/hub/catalog/models-toolbar.tsx

@@ -91,7 +91,11 @@ export const ModelsToolbar = memo(function ModelsToolbar({
   const channelValue: ChannelOptionValue = activeChannelId ?? "all";
   const formatOptions = useMemo<HubOption<ModelFormatFilter>[]>(
     () =>
-      FORMAT_FILTER_OPTIONS.map((option) => ({
+      FORMAT_FILTER_OPTIONS.filter(
+        // Downloaded inventory rows are never tagged mlx, so only Discover can
+        // match the MLX filter; hide it elsewhere to avoid an empty list.
+        (option) => option.value !== "mlx" || tab === "discover",
+      ).map((option) => ({
         value: option.value,
         triggerLabel: option.label,
         label: (
@@ -102,11 +106,14 @@ export const ModelsToolbar = memo(function ModelsToolbar({
             {option.value === "checkpoint" && (
               <span className="inline-block size-1.5 shrink-0 rounded-full bg-format-checkpoint" />
             )}
+            {option.value === "mlx" && (
+              <span className="inline-block size-1.5 shrink-0 rounded-full bg-format-mlx" />
+            )}
             {option.label}
           </>
         ),
       })),
-    [],
+    [tab],
   );
   const capabilityOptions = useMemo<HubOption<CapabilityFilter>[]>(
     () =>
@@ -154,10 +161,10 @@ export const ModelsToolbar = memo(function ModelsToolbar({
     "focus-visible:ring-0 focus-visible:ring-offset-0 focus-visible:border-border",
   );
   return (
-    <div className="flex min-w-0 flex-col gap-2 lg:flex-row lg:flex-wrap lg:items-center">
+    <div className="flex min-w-0 flex-col gap-2 lg:flex-row lg:flex-nowrap lg:items-center">
       <div
         className={cn(
-          "hub-menu-trigger hub-tab-toggle relative inline-flex h-9 w-full shrink-0 items-center rounded-full lg:w-[240px]",
+          "hub-menu-trigger hub-tab-toggle relative inline-flex h-9 w-full shrink-0 items-center rounded-full lg:w-[220px]",
         )}
         role="radiogroup"
         aria-label="View"
@@ -290,7 +297,7 @@ export const ModelsToolbar = memo(function ModelsToolbar({
         </div>
       </div>
 
-      <div className="flex min-w-0 flex-wrap items-center gap-2 lg:flex-[0_1_auto] lg:justify-end">
+      <div className="flex min-w-0 flex-wrap items-center gap-2 lg:flex-none lg:flex-nowrap lg:justify-end">
         {tab === "downloaded" && !isDataset && (
           <Tooltip>
             <TooltipTrigger asChild>
@@ -322,7 +329,7 @@ export const ModelsToolbar = memo(function ModelsToolbar({
             options={formatOptions}
             onValueChange={onFormatFilterChange}
             ariaLabel="Format filter"
-            className={cn(triggerBase, "min-w-[124px]")}
+            className={cn(triggerBase, "w-[128px]")}
           />
         )}
 
@@ -332,7 +339,7 @@ export const ModelsToolbar = memo(function ModelsToolbar({
             options={capabilityOptions}
             onValueChange={onCapabilityFilterChange}
             ariaLabel="Capability filter"
-            className={cn(triggerBase, "min-w-[136px]")}
+            className={cn(triggerBase, "w-[128px]")}
           />
         )}
 
@@ -342,7 +349,7 @@ export const ModelsToolbar = memo(function ModelsToolbar({
             options={sortOptions}
             onValueChange={onSortChange}
             ariaLabel="Sort models"
-            className={cn(triggerBase, "min-w-[140px]")}
+            className={cn(triggerBase, "w-[128px]")}
           />
         )}
 

studio/frontend/src/features/hub/components/hf-token-indicator.tsx

@@ -87,10 +87,10 @@ export function HfTokenIndicator({ showLabel = false }: HfTokenIndicatorProps =
           onClick={() => openDialog("general")}
           aria-label={ariaLabel}
           className={cn(
-            "inline-flex h-[26px] items-center justify-center px-2.5 text-[11.5px] transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring",
+            "inline-flex size-[26px] items-center justify-center rounded-full text-[11.5px] transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring",
             hasToken
               ? "hub-tag-soft text-muted-foreground hover:text-foreground/80"
-              : "rounded-full bg-destructive text-destructive-foreground hover:bg-destructive/90",
+              : "bg-destructive text-destructive-foreground hover:bg-destructive/90",
           )}
         >
           <HugeiconsIcon

studio/frontend/src/features/hub/download-manager/download-manager-panel.tsx

@@ -9,9 +9,9 @@ import {
 import { hasAuthToken, mustChangePassword } from "@/features/auth/session";
 import { isTauri } from "@/lib/api-base";
 import { cn } from "@/lib/utils";
+import { ChevronDownStandardIcon } from "@/lib/chevron-icons";
 import {
   Alert02Icon,
-  ArrowDown01Icon,
   Cancel01Icon,
   CheckmarkCircle02Icon,
   Download01Icon,
@@ -237,7 +237,7 @@ export function DownloadManagerPanel() {
               className="inline-flex size-6 shrink-0 cursor-pointer items-center justify-center rounded-[7px] text-muted-foreground transition-colors hover:bg-foreground/[0.06] hover:text-foreground dark:hover:bg-white/[0.1]"
             >
               <HugeiconsIcon
-                icon={ArrowDown01Icon}
+                icon={ChevronDownStandardIcon}
                 strokeWidth={1.75}
                 className="size-3.5"
               />

studio/frontend/src/features/hub/hub-page.tsx

@@ -52,6 +52,8 @@ import {
 import { inventoryRowMatches, tokenizeQuery } from "./lib/inventory-search";
 import {
   buildDiscoverRows,
+  detectResultFormat,
+  isUnslothFinetunable,
   matchesCapability,
   matchesFormat,
 } from "./lib/view-models";
@@ -388,8 +390,10 @@ export function ModelsPage() {
       discoverRows.filter((row) => {
         if (isDatasetMode) return true;
         return (
-          matchesFormat(row.result.isGguf, deferredFormatFilter) &&
-          matchesCapability(row.capabilities, deferredCapabilityFilter)
+          matchesFormat(detectResultFormat(row.result), deferredFormatFilter) &&
+          matchesCapability(row.capabilities, deferredCapabilityFilter) &&
+          (!activeChannel?.finetunableOnly ||
+            isUnslothFinetunable(row.result))
         );
       }),
     [
@@ -397,6 +401,7 @@ export function ModelsPage() {
       isDatasetMode,
       deferredFormatFilter,
       deferredCapabilityFilter,
+      activeChannel,
     ],
   );
 
@@ -721,7 +726,7 @@ export function ModelsPage() {
 
   return (
     <div className="hub-page flex h-full min-h-0 flex-col">
-      <div className="mx-auto flex w-full max-w-[1180px] flex-1 min-h-0 flex-col gap-6 px-5 pt-8 pb-16 sm:px-9 sm:pt-10 sm:pb-24">
+      <div className="mx-auto flex w-full max-w-[1180px] flex-1 min-h-0 flex-col gap-6 px-5 pt-8 pb-6 sm:px-9 sm:pt-10 sm:pb-8">
         <ModelsHeader
           cachedCount={effectiveCachedRows.length}
           localCount={effectiveLocalRows.length}
@@ -759,7 +764,7 @@ export function ModelsPage() {
           <div className="flex min-h-0 flex-1 flex-col lg:grid lg:grid-cols-[360px_minmax(0,1fr)] xl:grid-cols-[400px_minmax(0,1fr)] 2xl:grid-cols-[440px_minmax(0,1fr)]">
             <div
               className={cn(
-                "hub-side-surface flex min-h-0 min-w-0 flex-1 flex-col border-b border-border lg:flex-initial lg:border-b-0 lg:border-r",
+                "hub-side-surface flex min-h-0 min-w-0 flex-1 flex-col border-b border-sidebar-border lg:flex-initial lg:border-b-0 lg:border-r lg:border-sidebar-border",
                 mobileInspectorOpen && "hidden lg:flex",
               )}
             >

studio/frontend/src/features/hub/hub.css

@@ -15,6 +15,7 @@
 	--format-gguf: #60a5fa;
 	--format-checkpoint: #f472b6;
 	--format-adapter: #8b5cf6;
+	--format-mlx: #f59e0b;
 	--status-warning: #eab308;
 	--status-danger: #ef4444;
 	--status-success: #11b686;
@@ -24,6 +25,7 @@
 	--format-gguf: #60a5fa;
 	--format-checkpoint: #f472b6;
 	--format-adapter: #a78bfa;
+	--format-mlx: #fbbf24;
 	--status-warning: #fbbf24;
 	--status-danger: #ef4444;
 	--status-success: #11b686;
@@ -33,6 +35,7 @@
 	--color-format-gguf: var(--format-gguf);
 	--color-format-checkpoint: var(--format-checkpoint);
 	--color-format-adapter: var(--format-adapter);
+	--color-format-mlx: var(--format-mlx);
 	--color-status-warning: var(--status-warning);
 	--color-status-danger: var(--status-danger);
 	--color-status-success: var(--status-success);
@@ -734,7 +737,7 @@ html:not(.dark) .hub-page [data-hub-scroll="true"] {
 }
 
 html.dark .hub-page [data-hub-scroll="true"] {
-	scrollbar-color: oklch(0.55 0 0 / 0.16) transparent;
+	scrollbar-color: oklch(0.72 0 0 / 0.3) transparent;
 }
 
 html:not(.dark) .hub-page [data-hub-scroll="true"]::-webkit-scrollbar-thumb {
@@ -742,7 +745,7 @@ html:not(.dark) .hub-page [data-hub-scroll="true"]::-webkit-scrollbar-thumb {
 }
 
 html.dark .hub-page [data-hub-scroll="true"]::-webkit-scrollbar-thumb {
-	background: oklch(0.55 0 0 / 0.16);
+	background: oklch(0.72 0 0 / 0.3);
 }
 
 /* While a modal dialog is open (delete confirmation, transport-mode swap, the

studio/frontend/src/features/hub/lib/channels.ts

@@ -26,6 +26,8 @@ export interface ChannelPreset {
   idSuffix?: string;
   format: ModelFormatFilter;
   sort: HfSortKey;
+  // Keep only formats Unsloth can fine-tune (drops fp8, nvfp4, w4a16, etc.).
+  finetunableOnly?: boolean;
 }
 
 export const CHANNEL_PRESETS: readonly ChannelPreset[] = [
@@ -33,7 +35,7 @@ export const CHANNEL_PRESETS: readonly ChannelPreset[] = [
     id: "unsloth-trending",
     label: "Unsloth Trending",
     icon: SparklesIcon,
-    hint: "Most trending models published by Unsloth.",
+    hint: "Trending Unsloth models.",
     owner: "unsloth",
     format: "gguf",
     sort: "trendingScore",
@@ -42,7 +44,7 @@ export const CHANNEL_PRESETS: readonly ChannelPreset[] = [
     id: "unsloth-latest",
     label: "Latest Unsloth",
     icon: NewReleasesIcon,
-    hint: "Freshly released models from the Unsloth channel.",
+    hint: "Newest Unsloth releases.",
     owner: "unsloth",
     format: "all",
     sort: "lastModified",
@@ -51,12 +53,11 @@ export const CHANNEL_PRESETS: readonly ChannelPreset[] = [
     id: "unsloth-safetensors",
     label: "Fine-tune ready",
     icon: SlidersHorizontalIcon,
-    hint: "Latest Unsloth bnb-4bit checkpoints ready to fine-tune.",
+    hint: "Checkpoints ready to fine-tune.",
     owner: "unsloth",
-    query: "bnb-4bit",
-    idSuffix: "-bnb-4bit",
     format: "checkpoint",
     sort: "lastModified",
+    finetunableOnly: true,
   },
 ];
 

studio/frontend/src/features/hub/lib/format-filters.ts

@@ -3,12 +3,13 @@
 
 export type FormatFilterModelFormat =
   | "gguf"
+  | "mlx"
   | "safetensors"
   | "adapter"
   | "checkpoint"
   | "unknown";
 
-export type FormatFilterValue = "all" | "gguf" | "checkpoint";
+export type FormatFilterValue = "all" | "gguf" | "checkpoint" | "mlx";
 
 export function matchesFormat(
   modelFormat: boolean | FormatFilterModelFormat | null | undefined,
@@ -22,5 +23,40 @@ export function matchesFormat(
         : "safetensors"
       : modelFormat;
   if (formatFilter === "gguf") return normalized === "gguf";
+  if (formatFilter === "mlx") return normalized === "mlx";
   return normalized === "safetensors" || normalized === "checkpoint";
 }
+
+// Discover results carry an isGguf flag plus HF tags/library. MLX repos are
+// tagged "mlx" or use library_name "mlx", so detect those before falling back
+// to safetensors.
+export function detectResultFormat(result: {
+  isGguf: boolean;
+  tags?: string[];
+  libraryName?: string;
+}): FormatFilterModelFormat {
+  if (result.isGguf) return "gguf";
+  if (
+    result.libraryName?.toLowerCase() === "mlx" ||
+    result.tags?.some((tag) => tag.toLowerCase() === "mlx")
+  ) {
+    return "mlx";
+  }
+  return "safetensors";
+}
+
+// Inference-only quant formats Unsloth cannot fine-tune. Matched on the repo
+// name since the search listing often omits the quant config.
+const NON_FINETUNABLE_NAME =
+  /(?:^|[-_/.])(?:fp8|nvfp4|mxfp4|w4a16|w8a8|w8a16|int4|int8|gptq|awq|mobile|litert|tflite)(?:[-_/.]|$)/i;
+// Quant methods Unsloth can fine-tune: full precision (none) or bitsandbytes.
+const FINETUNABLE_QUANT = new Set(["bitsandbytes", "bnb", "bnb_4bit"]);
+
+export function isUnslothFinetunable(result: {
+  id: string;
+  quantMethod?: string;
+}): boolean {
+  if (NON_FINETUNABLE_NAME.test(result.id)) return false;
+  const quant = result.quantMethod?.toLowerCase();
+  return !quant || FINETUNABLE_QUANT.has(quant);
+}

studio/frontend/src/features/hub/lib/view-models.ts

@@ -18,7 +18,11 @@ import {
 } from "./model-capabilities";
 import { ownerOf, repoOf } from "@/features/hub/lib/format";
 import { estimateSizeFromDtypes, isGgufLike } from "./hf-model-meta";
-export { matchesFormat } from "./format-filters";
+export {
+  matchesFormat,
+  detectResultFormat,
+  isUnslothFinetunable,
+} from "./format-filters";
 export {
   formatLocalUpdated,
   localSourceLabel,
@@ -46,6 +50,7 @@ export const FORMAT_FILTER_OPTIONS: ReadonlyArray<{
   { value: "all", label: "All formats" },
   { value: "gguf", label: "GGUF" },
   { value: "checkpoint", label: "Checkpoints" },
+  { value: "mlx", label: "MLX" },
 ];
 
 export function formatPipelineTag(tag: string | undefined): string | null {

studio/frontend/src/features/hub/types.ts

@@ -24,7 +24,7 @@ export type ResourceTypeFilter = "models" | "datasets";
 
 export type HubModelType = "text" | "vision" | "audio" | "embeddings";
 
-export type ModelFormatFilter = "all" | "gguf" | "checkpoint";
+export type ModelFormatFilter = "all" | "gguf" | "checkpoint" | "mlx";
 
 export type CapabilityFilter = "all" | CapabilityKey;
 

studio/frontend/src/features/profile/components/profile-personalization-panel.tsx

@@ -1,15 +1,18 @@
 // 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 { publicAssetUrl } from "@/components/mascot-img";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { getAuthToken } from "@/features/auth";
+import { cn } from "@/lib/utils";
 import { useT } from "@/i18n";
 import { toastError, toastSuccess } from "@/shared/toast";
 import { Camera01Icon } from "@hugeicons/core-free-icons";
 import { HugeiconsIcon } from "@hugeicons/react";
 import { useMemo, useRef, useState } from "react";
+import { SLOTH_AVATARS } from "../sloth-avatars";
 import { decodeJwtSubject } from "../utils/jwt-subject";
 import { resizeImageFileToDataUrl } from "../utils/resize-image-file";
 import { useUserProfileStore } from "../stores/user-profile-store";
@@ -17,7 +20,11 @@ import { UserAvatar } from "./user-avatar";
 
 const PROFILE_STORAGE_KEY = "unsloth_user_profile";
 
-function readPersistedProfile(): { displayName: string; avatarDataUrl: string | null } | null {
+function readPersistedProfile(): {
+  displayName: string;
+  nickname: string;
+  avatarDataUrl: string | null;
+} | null {
   try {
     const raw = window.localStorage.getItem(PROFILE_STORAGE_KEY);
     if (!raw) return null;
@@ -27,10 +34,15 @@ function readPersistedProfile(): { displayName: string; avatarDataUrl: string |
     // Zustand persist shape: { state: {...}, version }
     const maybeState = "state" in parsed ? (parsed as { state?: unknown }).state : parsed;
     if (!maybeState || typeof maybeState !== "object") return null;
-    const state = maybeState as { displayName?: unknown; avatarDataUrl?: unknown };
+    const state = maybeState as {
+      displayName?: unknown;
+      nickname?: unknown;
+      avatarDataUrl?: unknown;
+    };
 
     return {
       displayName: typeof state.displayName === "string" ? state.displayName : "",
+      nickname: typeof state.nickname === "string" ? state.nickname : "",
       avatarDataUrl: typeof state.avatarDataUrl === "string" ? state.avatarDataUrl : null,
     };
   } catch {
@@ -41,12 +53,17 @@ function readPersistedProfile(): { displayName: string; avatarDataUrl: string |
 export function ProfilePersonalizationPanel() {
   const t = useT();
   const displayName = useUserProfileStore((s) => s.displayName);
+  const nickname = useUserProfileStore((s) => s.nickname);
   const avatarDataUrl = useUserProfileStore((s) => s.avatarDataUrl);
   const setDisplayName = useUserProfileStore((s) => s.setDisplayName);
+  const setNickname = useUserProfileStore((s) => s.setNickname);
   const setAvatarDataUrl = useUserProfileStore((s) => s.setAvatarDataUrl);
+  const avatarShape = useUserProfileStore((s) => s.avatarShape);
+  const setAvatarShape = useUserProfileStore((s) => s.setAvatarShape);
 
   const [imageError, setImageError] = useState<string | null>(null);
   const [draftName, setDraftName] = useState(displayName);
+  const [draftNickname, setDraftNickname] = useState(nickname);
   const fileInputRef = useRef<HTMLInputElement>(null);
 
   const sessionSub = decodeJwtSubject(getAuthToken()) ?? "";
@@ -55,6 +72,10 @@ export function ProfilePersonalizationPanel() {
     () => draftName.trim() !== displayName.trim(),
     [draftName, displayName],
   );
+  const hasNicknameChanges = useMemo(
+    () => draftNickname.trim() !== nickname.trim(),
+    [draftNickname, nickname],
+  );
 
   const saveName = () => {
     const trimmed = draftName.trim();
@@ -73,21 +94,42 @@ export function ProfilePersonalizationPanel() {
     }
   };
 
+  const saveNickname = () => {
+    const trimmed = draftNickname.trim();
+    if (trimmed !== draftNickname) setDraftNickname(trimmed);
+    if (trimmed !== nickname) {
+      setNickname(trimmed);
+      const persisted = readPersistedProfile();
+      if (persisted && persisted.nickname === trimmed) {
+        toastSuccess(t("settings.profile.nicknameSaved"));
+      } else {
+        toastError(
+          t("settings.profile.namePersistErrorTitle"),
+          t("settings.profile.namePersistErrorDescription"),
+        );
+      }
+    }
+  };
+
+  // Persist an avatar value (data URL or asset URL) and toast the result.
+  const applyAvatar = (value: string) => {
+    setAvatarDataUrl(value);
+    const persisted = readPersistedProfile();
+    if (persisted && persisted.avatarDataUrl === value) {
+      toastSuccess(t("settings.profile.photoUpdated"));
+    } else {
+      toastError(
+        t("settings.profile.photoPersistErrorTitle"),
+        t("settings.profile.photoPersistErrorDescription"),
+      );
+    }
+  };
+
   const onPickFile = async (file: File | undefined) => {
     if (!file) return;
     setImageError(null);
     try {
-      const dataUrl = await resizeImageFileToDataUrl(file);
-      setAvatarDataUrl(dataUrl);
-      const persisted = readPersistedProfile();
-      if (persisted && persisted.avatarDataUrl === dataUrl) {
-        toastSuccess(t("settings.profile.photoUpdated"));
-      } else {
-        toastError(
-          t("settings.profile.photoPersistErrorTitle"),
-          t("settings.profile.photoPersistErrorDescription"),
-        );
-      }
+      applyAvatar(await resizeImageFileToDataUrl(file));
     } catch (e) {
       const message =
         e instanceof Error ? e.message : t("settings.profile.imageUseError");
@@ -96,6 +138,12 @@ export function ProfilePersonalizationPanel() {
     }
   };
 
+  // Use a bundled sloth sticker as the avatar.
+  const pickSloth = (path: string) => {
+    setImageError(null);
+    applyAvatar(publicAssetUrl(path));
+  };
+
   return (
     <div className="mx-auto flex w-full max-w-[640px] flex-col items-center gap-6 rounded-2xl border border-border/70 bg-muted/10 px-8 py-7">
       <div className="relative">
@@ -151,6 +199,90 @@ export function ProfilePersonalizationPanel() {
         </div>
       </div>
 
+      <div className="flex w-full max-w-[560px] flex-col gap-2">
+        <Label htmlFor="profile-nickname" className="text-xs font-medium text-muted-foreground">
+          {t("settings.profile.nickname")}
+        </Label>
+        <div className="flex items-center gap-2">
+          <Input
+            id="profile-nickname"
+            type="text"
+            value={draftNickname}
+            onChange={(e) => setDraftNickname(e.target.value)}
+            onKeyDown={(e) => {
+              if (e.key === "Enter") {
+                e.preventDefault();
+                saveNickname();
+              }
+            }}
+            autoComplete="off"
+            placeholder={t("settings.profile.nicknamePlaceholder")}
+            className="h-10 min-w-0 flex-1 rounded-full text-sm"
+          />
+          <Button type="button" size="sm" className="h-10 px-5" onClick={saveNickname} disabled={!hasNicknameChanges}>
+            {t("common.save")}
+          </Button>
+        </div>
+      </div>
+
+      <div className="flex w-full max-w-[560px] flex-col gap-2">
+        <Label className="text-xs font-medium text-muted-foreground">
+          {t("settings.profile.avatarShape")}
+        </Label>
+        <div className="inline-flex w-fit items-center gap-1 rounded-full border border-border/70 bg-muted/40 p-1">
+          {(["circle", "rounded"] as const).map((shape) => (
+            <button
+              key={shape}
+              type="button"
+              onClick={() => setAvatarShape(shape)}
+              aria-pressed={avatarShape === shape}
+              className={cn(
+                "rounded-full px-4 py-1.5 text-xs font-medium transition-colors",
+                avatarShape === shape
+                  ? "bg-background text-foreground shadow-sm"
+                  : "text-muted-foreground hover:text-foreground",
+              )}
+            >
+              {shape === "circle"
+                ? t("settings.profile.avatarShapeCircle")
+                : t("settings.profile.avatarShapeRounded")}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      <div className="flex w-full max-w-[560px] flex-col gap-2">
+        <Label className="text-xs font-medium text-muted-foreground">
+          {t("settings.profile.chooseSloth")}
+        </Label>
+        <div className="grid grid-cols-7 gap-2 sm:grid-cols-9">
+          {SLOTH_AVATARS.map((path) => {
+            const url = publicAssetUrl(path);
+            const selected = avatarDataUrl === url;
+            // Readable accessible name from the filename, e.g. "sloth yay".
+            const label =
+              path.split("/").pop()?.replace(/\.png$/i, "").replace(/^large\s+/i, "").trim() ??
+              "sloth";
+            return (
+              <button
+                key={path}
+                type="button"
+                onClick={() => pickSloth(path)}
+                aria-pressed={selected}
+                aria-label={label}
+                title={label}
+                className={cn(
+                  "relative aspect-square overflow-hidden rounded-full bg-muted ring-1 ring-border transition hover:ring-primary/60 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring",
+                  selected && "ring-2 ring-primary",
+                )}
+              >
+                <img src={url} alt="" loading="lazy" className="size-full object-cover" />
+              </button>
+            );
+          })}
+        </div>
+      </div>
+
       {imageError ? (
         <p className="w-full text-xs text-destructive" role="alert">
           {imageError}

studio/frontend/src/features/profile/components/user-avatar.tsx

@@ -3,12 +3,18 @@
 
 import { cn } from "@/lib/utils";
 import { avatarBgStyle, initialsFromName } from "../utils/avatar-initials";
+import {
+  useUserProfileStore,
+  type AvatarShape,
+} from "../stores/user-profile-store";
 
 type UserAvatarProps = {
   name: string;
   imageUrl: string | null;
   size: "sm" | "md" | "lg";
   className?: string;
+  /** Override the stored shape preference (defaults to the user's setting). */
+  shape?: AvatarShape;
 };
 
 const SIZE: Record<"sm" | "md" | "lg", string> = {
@@ -18,12 +24,20 @@ const SIZE: Record<"sm" | "md" | "lg", string> = {
   lg: "size-[106px] text-[1.65rem]",
 };
 
-export function UserAvatar({ name, imageUrl, size, className }: UserAvatarProps) {
+// Percentage radius keeps the rounded-rectangle proportional across sizes.
+const SHAPE: Record<AvatarShape, string> = {
+  circle: "rounded-full",
+  rounded: "rounded-[22%]",
+};
+
+export function UserAvatar({ name, imageUrl, size, className, shape }: UserAvatarProps) {
   const label = initialsFromName(name);
+  const storedShape = useUserProfileStore((s) => s.avatarShape);
+  const shapeClass = SHAPE[shape ?? storedShape];
 
   if (imageUrl) {
     return (
-      <span className={cn("relative inline-flex shrink-0 overflow-hidden rounded-full", SIZE[size], className)}>
+      <span className={cn("relative inline-flex shrink-0 overflow-hidden bg-transparent", shapeClass, SIZE[size], className)}>
         <img src={imageUrl} alt="" className="size-full object-cover" />
       </span>
     );
@@ -33,7 +47,8 @@ export function UserAvatar({ name, imageUrl, size, className }: UserAvatarProps)
     <span
       style={avatarBgStyle()}
       className={cn(
-        "inline-flex shrink-0 items-center justify-center rounded-full font-semibold text-white",
+        "inline-flex shrink-0 items-center justify-center font-semibold text-white",
+        shapeClass,
         SIZE[size],
         className,
       )}

studio/frontend/src/features/profile/hooks/use-effective-profile.ts

@@ -7,13 +7,17 @@ import { useUserProfileStore } from "../stores/user-profile-store";
 
 export function useEffectiveProfile() {
   const displayName = useUserProfileStore((s) => s.displayName);
+  const nickname = useUserProfileStore((s) => s.nickname);
   const avatarDataUrl = useUserProfileStore((s) => s.avatarDataUrl);
 
   const sessionSub = decodeJwtSubject(getAuthToken());
   const dn = displayName.trim();
+  // Name to address the user by: nickname, else first name, else login id.
+  const addressName = nickname.trim() || dn.split(/\s+/)[0] || sessionSub || "";
   return {
     sessionSub,
     displayTitle: dn || "Unsloth",
+    addressName,
     avatarDataUrl,
   };
 }

studio/frontend/src/features/profile/sloth-avatars.ts

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: AGPL-3.0-only
+// Copyright 2026-present the Unsloth AI Inc. team. All rights reserved. See /studio/LICENSE.AGPL-3.0
+
+// Curated list of sloth emoji stickers offered as profile pictures.
+//
+// The full `public/Sloth emojis` folder has ~38 PNGs, but many are non-square
+// or carry heavy whitespace on one or more edges, which crops badly inside the
+// round avatar frame. This list is the subset that is (a) effectively square
+// (aspect ratio within ~10% of 1:1) and (b) low-whitespace on every edge, so
+// each one fills the avatar circle cleanly. Exact duplicates are de-duped.
+//
+// Paths are relative to the public folder; resolve with `publicAssetUrl(...)`
+// before using as an <img> src so spaces and subpath deploys are handled.
+export const SLOTH_AVATARS: readonly string[] = [
+  "Sloth emojis/large sloth yay.png",
+  "Sloth emojis/large sloth heart.png",
+  "Sloth emojis/large sloth wave.png",
+  "Sloth emojis/large sloth thumbs.png",
+  "Sloth emojis/large sloth cheeky.png",
+  "Sloth emojis/large sloth glasses.png",
+  "Sloth emojis/large sloth fire.png",
+  "Sloth emojis/large sloth drink.png",
+  "Sloth emojis/large sloth sad.png",
+  "Sloth emojis/Large sloth Question mark.png",
+  "Sloth emojis/sloth shy large.png",
+  "Sloth emojis/sloth shock large.png",
+  "Sloth emojis/sloth sir large.png",
+  "Sloth emojis/sloth huglove large.png",
+  "Sloth emojis/sloth headphones.png",
+  "Sloth emojis/sloth pc square.png",
+  "Sloth emojis/sloth on phone.png",
+  "Sloth emojis/sloth magnify final.png",
+  "Sloth emojis/Sloth loca pc.png",
+  "Sloth emojis/UnSloth GPU Front square.png",
+  "Sloth emojis/UnSloth Sparkling large.png",
+];

studio/frontend/src/features/profile/stores/user-profile-store.ts

@@ -4,20 +4,32 @@
 import { create } from "zustand";
 import { persist } from "zustand/middleware";
 
+export type AvatarShape = "circle" | "rounded";
+
 export interface UserProfileState {
   displayName: string;
+  // Preferred name used to address the user (greetings, etc.).
+  nickname: string;
   avatarDataUrl: string | null;
+  // Avatar outline: full circle or rounded rectangle.
+  avatarShape: AvatarShape;
   setDisplayName: (displayName: string) => void;
+  setNickname: (nickname: string) => void;
   setAvatarDataUrl: (avatarDataUrl: string | null) => void;
+  setAvatarShape: (avatarShape: AvatarShape) => void;
 }
 
 export const useUserProfileStore = create<UserProfileState>()(
   persist(
     (set) => ({
       displayName: "",
+      nickname: "",
       avatarDataUrl: null,
+      avatarShape: "circle",
       setDisplayName: (displayName) => set({ displayName }),
+      setNickname: (nickname) => set({ nickname }),
       setAvatarDataUrl: (avatarDataUrl) => set({ avatarDataUrl }),
+      setAvatarShape: (avatarShape) => set({ avatarShape }),
     }),
     { name: "unsloth_user_profile" },
   ),

studio/frontend/src/features/profile/utils/resize-image-file.ts

@@ -2,6 +2,9 @@
 // Copyright 2026-present the Unsloth AI Inc. team. All rights reserved. See /studio/LICENSE.AGPL-3.0
 
 const MAX_EDGE = 256;
+// Smallest edge we shrink a transparent image to before giving up on WebP.
+const MIN_EDGE = 96;
+const EDGE_STEP = 32;
 const MAX_BYTES = 380_000;
 const MAX_DATA_URL_LENGTH = Math.floor(MAX_BYTES * 1.35);
 const JPEG_QUALITY_START = 0.88;
@@ -50,6 +53,33 @@ function encodeCanvasWithinLimit(
   return dataUrl.length <= MAX_DATA_URL_LENGTH ? dataUrl : null;
 }
 
+// Lossless PNG keeps alpha and, unlike WebP encoding, works in every browser
+// (Safari cannot encode WebP). Size is controlled only by dimensions.
+function encodePngWithinLimit(canvas: HTMLCanvasElement): string | null {
+  const dataUrl = canvas.toDataURL("image/png");
+  if (!dataUrl.startsWith("data:image/png")) return null;
+  return dataUrl.length <= MAX_DATA_URL_LENGTH ? dataUrl : null;
+}
+
+// Draw the image onto a canvas scaled to fit within maxEdge.
+function drawScaled(
+  img: HTMLImageElement,
+  w: number,
+  h: number,
+  maxEdge: number,
+): { canvas: HTMLCanvasElement; ctx: CanvasRenderingContext2D; cw: number; ch: number } {
+  const scale = Math.min(1, maxEdge / Math.max(w, h));
+  const cw = Math.max(1, Math.round(w * scale));
+  const ch = Math.max(1, Math.round(h * scale));
+  const canvas = document.createElement("canvas");
+  canvas.width = cw;
+  canvas.height = ch;
+  const ctx = canvas.getContext("2d");
+  if (!ctx) throw new Error("Canvas not available");
+  ctx.drawImage(img, 0, 0, cw, ch);
+  return { canvas, ctx, cw, ch };
+}
+
 /** Downscale the image, preserving transparency, to stay localStorage-friendly. */
 export async function resizeImageFileToDataUrl(file: File): Promise<string> {
   const img = await loadImage(file);
@@ -57,24 +87,24 @@ export async function resizeImageFileToDataUrl(file: File): Promise<string> {
   const h = img.naturalHeight;
   if (!w || !h) throw new Error("Invalid image dimensions");
 
-  const scale = Math.min(1, MAX_EDGE / Math.max(w, h));
-  const cw = Math.max(1, Math.round(w * scale));
-  const ch = Math.max(1, Math.round(h * scale));
+  const base = drawScaled(img, w, h, MAX_EDGE);
+  const hasTransparency = canvasHasTransparency(base.ctx, base.cw, base.ch);
 
-  const canvas = document.createElement("canvas");
-  canvas.width = cw;
-  canvas.height = ch;
-  const ctx = canvas.getContext("2d");
-  if (!ctx) throw new Error("Canvas not available");
-  ctx.drawImage(img, 0, 0, cw, ch);
-
-  const hasTransparency = canvasHasTransparency(ctx, cw, ch);
   if (hasTransparency) {
-    const webpDataUrl = encodeCanvasWithinLimit(canvas, "image/webp", WEBP_QUALITY_START);
-    if (webpDataUrl) return webpDataUrl;
+    // Keep alpha, shrinking to fit. WebP is smallest where supported; PNG is
+    // the universal fallback (Safari cannot encode WebP). Never JPEG, which
+    // would paint a background behind a transparent image.
+    for (let edge = MAX_EDGE; edge >= MIN_EDGE; edge -= EDGE_STEP) {
+      const { canvas } = edge === MAX_EDGE ? base : drawScaled(img, w, h, edge);
+      const webpDataUrl = encodeCanvasWithinLimit(canvas, "image/webp", WEBP_QUALITY_START);
+      if (webpDataUrl) return webpDataUrl;
+      const pngDataUrl = encodePngWithinLimit(canvas);
+      if (pngDataUrl) return pngDataUrl;
+    }
+    throw new Error("Image is still too large after compression. Try a smaller file.");
   }
 
-  const jpegDataUrl = encodeCanvasWithinLimit(canvas, "image/jpeg", JPEG_QUALITY_START);
+  const jpegDataUrl = encodeCanvasWithinLimit(base.canvas, "image/jpeg", JPEG_QUALITY_START);
   if (jpegDataUrl) return jpegDataUrl;
 
   throw new Error("Image is still too large after compression. Try a smaller file.");

studio/frontend/src/features/settings/components/archived-chats-dialog.tsx

@@ -0,0 +1,218 @@
+// 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 {
+  AlertDialog,
+  AlertDialogAction,
+  AlertDialogCancel,
+  AlertDialogContent,
+  AlertDialogDescription,
+  AlertDialogFooter,
+  AlertDialogHeader,
+  AlertDialogTitle,
+} from "@/components/ui/alert-dialog";
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+import {
+  deleteChatItem,
+  unarchiveChatItem,
+  useChatPreferencesStore,
+  useChatRuntimeStore,
+  useChatSidebarItems,
+  type SidebarItem,
+} from "@/features/chat";
+import { toast } from "@/lib/toast";
+import { ArchiveRestoreIcon, Delete02Icon } from "@hugeicons/core-free-icons";
+import { HugeiconsIcon } from "@hugeicons/react";
+import { useNavigate, useRouterState } from "@tanstack/react-router";
+import { useState } from "react";
+import { useSettingsDialogStore } from "../stores/settings-dialog-store";
+
+function formatCreatedAt(ms: number): string {
+  return new Date(ms).toLocaleDateString(undefined, {
+    year: "numeric",
+    month: "long",
+    day: "numeric",
+  });
+}
+
+export function ArchivedChatsDialog({
+  open,
+  onOpenChange,
+}: {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}) {
+  const { archivedItems } = useChatSidebarItems({ requireMessages: false });
+  const navigate = useNavigate();
+  const closeSettings = useSettingsDialogStore((s) => s.closeDialog);
+  const storeThreadId = useChatRuntimeStore((s) => s.activeThreadId);
+  // Open chat id from the route. Compare panes do not write the store, so the
+  // pair id only lives in the search params; mirror how the sidebar reads it.
+  const openChatId = useRouterState({
+    select: (s) => {
+      if (!s.location.pathname.startsWith("/chat")) return undefined;
+      const search = s.location.search as Record<string, string | undefined>;
+      return search.thread ?? search.compare ?? storeThreadId ?? undefined;
+    },
+  });
+  const confirmDeleteChats = useChatPreferencesStore(
+    (s) => s.confirmDeleteChats,
+  );
+  const [confirmingDelete, setConfirmingDelete] = useState<SidebarItem | null>(
+    null,
+  );
+
+  // Open an archived chat: leave it archived, just navigate to it.
+  function openChat(item: SidebarItem) {
+    navigate({
+      to: "/chat",
+      search:
+        item.type === "single" ? { thread: item.id } : { compare: item.id },
+    });
+    onOpenChange(false);
+    closeSettings();
+  }
+
+  async function handleUnarchive(item: SidebarItem) {
+    try {
+      await unarchiveChatItem(item);
+      toast.success("Chat unarchived");
+    } catch (err) {
+      toast.error("Failed to unarchive chat", {
+        description: err instanceof Error ? err.message : undefined,
+      });
+    }
+  }
+
+  async function handleDelete(item: SidebarItem) {
+    try {
+      // Pass the open chat id (single or compare) so deleting it resets nav.
+      await deleteChatItem(item, openChatId, (view) => {
+        navigate({
+          to: "/chat",
+          search: item.projectId
+            ? { project: item.projectId }
+            : { new: view.newThreadNonce },
+        });
+      });
+      toast.success("Chat deleted");
+    } catch (err) {
+      toast.error("Failed to delete chat", {
+        description: err instanceof Error ? err.message : undefined,
+      });
+    }
+  }
+
+  function requestDelete(item: SidebarItem) {
+    if (confirmDeleteChats) setConfirmingDelete(item);
+    else void handleDelete(item);
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-2xl">
+        <DialogHeader>
+          <DialogTitle>Archived chats</DialogTitle>
+        </DialogHeader>
+
+        {archivedItems.length === 0 ? (
+          <p className="py-8 text-center text-sm text-muted-foreground">
+            No archived chats.
+          </p>
+        ) : (
+          <div className="max-h-[60vh] overflow-y-auto">
+            <div className="flex items-center gap-4 border-b border-border/60 px-1 pb-2 text-xs font-semibold text-foreground">
+              <span className="flex-1">Name</span>
+              <span className="w-32 shrink-0">Date created</span>
+              <span className="w-16 shrink-0" />
+            </div>
+            {archivedItems.map((item) => (
+              <div
+                key={item.id}
+                className="group flex items-center gap-4 border-b border-border/40 px-1 py-2.5 text-sm last:border-0"
+              >
+                <button
+                  type="button"
+                  onClick={() => openChat(item)}
+                  className="min-w-0 flex-1 truncate text-left text-primary hover:underline"
+                  title={item.title}
+                >
+                  {item.title}
+                </button>
+                <span className="w-32 shrink-0 text-muted-foreground tabular-nums">
+                  {formatCreatedAt(item.createdAt)}
+                </span>
+                <span className="flex w-16 shrink-0 items-center justify-end gap-1">
+                  <button
+                    type="button"
+                    onClick={() => void handleUnarchive(item)}
+                    aria-label="Unarchive chat"
+                    title="Unarchive"
+                    className="inline-flex size-7 items-center justify-center rounded-full text-muted-foreground transition-colors hover:bg-muted hover:text-foreground"
+                  >
+                    <HugeiconsIcon
+                      icon={ArchiveRestoreIcon}
+                      strokeWidth={1.75}
+                      className="size-4"
+                    />
+                  </button>
+                  <button
+                    type="button"
+                    onClick={() => requestDelete(item)}
+                    aria-label="Delete chat"
+                    title="Delete"
+                    className="inline-flex size-7 items-center justify-center rounded-full text-muted-foreground transition-colors hover:bg-destructive/10 hover:text-destructive"
+                  >
+                    <HugeiconsIcon
+                      icon={Delete02Icon}
+                      strokeWidth={1.75}
+                      className="size-4"
+                    />
+                  </button>
+                </span>
+              </div>
+            ))}
+          </div>
+        )}
+      </DialogContent>
+
+      <AlertDialog
+        open={confirmingDelete !== null}
+        onOpenChange={(o) => {
+          if (!o) setConfirmingDelete(null);
+        }}
+      >
+        <AlertDialogContent>
+          <AlertDialogHeader>
+            <AlertDialogTitle>Delete chat</AlertDialogTitle>
+            <AlertDialogDescription>
+              Delete{" "}
+              <span className="font-medium text-foreground">
+                &quot;{confirmingDelete?.title}&quot;
+              </span>
+              ? This cannot be undone.
+            </AlertDialogDescription>
+          </AlertDialogHeader>
+          <AlertDialogFooter>
+            <AlertDialogCancel>Cancel</AlertDialogCancel>
+            <AlertDialogAction
+              variant="destructive"
+              onClick={() => {
+                const item = confirmingDelete;
+                setConfirmingDelete(null);
+                if (item) void handleDelete(item);
+              }}
+            >
+              Delete
+            </AlertDialogAction>
+          </AlertDialogFooter>
+        </AlertDialogContent>
+      </AlertDialog>
+    </Dialog>
+  );
+}

studio/frontend/src/features/settings/components/studio-version-section.tsx

@@ -0,0 +1,70 @@
+// 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 { getAuthToken } from "@/features/auth";
+import { useT } from "@/i18n";
+import { apiUrl } from "@/lib/api-base";
+import { useEffect, useState } from "react";
+import { SettingsRow } from "./settings-row";
+import { SettingsSection } from "./settings-section";
+
+type ApiObject = Record<string, unknown>;
+
+async function fetchStudioVersions(): Promise<{
+  packageVersion: string | null;
+  studioVersion: string | null;
+}> {
+  try {
+    const token = getAuthToken();
+    const headers = new Headers();
+    if (token) headers.set("Authorization", `Bearer ${token}`);
+    const res = await fetch(apiUrl("/api/health"), { headers });
+    if (!res.ok) {
+      return { packageVersion: null, studioVersion: null };
+    }
+    const data = (await res.json()) as ApiObject;
+    const packageVersion = data.version;
+    const studioVersion = data.studio_version;
+    return {
+      packageVersion:
+        typeof packageVersion === "string" ? packageVersion : null,
+      studioVersion: typeof studioVersion === "string" ? studioVersion : null,
+    };
+  } catch {
+    return { packageVersion: null, studioVersion: null };
+  }
+}
+
+// Shared "Unsloth" version block, shown in both General and About.
+export function StudioVersionSection() {
+  const t = useT();
+  const [packageVersion, setPackageVersion] = useState("dev");
+  const [studioVersion, setStudioVersion] = useState("dev");
+
+  useEffect(() => {
+    let canceled = false;
+    fetchStudioVersions().then((next) => {
+      if (canceled) return;
+      if (next.packageVersion) setPackageVersion(next.packageVersion);
+      if (next.studioVersion) setStudioVersion(next.studioVersion);
+    });
+    return () => {
+      canceled = true;
+    };
+  }, []);
+
+  return (
+    <SettingsSection title="Unsloth">
+      <SettingsRow label={t("settings.about.studioVersion")}>
+        <code className="font-mono text-xs text-muted-foreground">
+          {studioVersion}
+        </code>
+      </SettingsRow>
+      <SettingsRow label={t("settings.about.packageVersion")}>
+        <code className="font-mono text-xs text-muted-foreground">
+          {packageVersion}
+        </code>
+      </SettingsRow>
+    </SettingsSection>
+  );
+}

studio/frontend/src/features/settings/stores/settings-dialog-store.ts

@@ -20,11 +20,24 @@ interface SettingsDialogState {
   // previous-focus capture, leaving focus on <body> after close. We restore
   // explicitly via onCloseAutoFocus.
   opener: HTMLElement | null;
+  // Set when something asks to jump straight to the archived chats list (the
+  // archive toast). ChatTab consumes it to open the dialog, then clears it.
+  archivedChatsRequested: boolean;
   openDialog: (tab?: SettingsTab) => void;
+  openArchivedChats: () => void;
+  consumeArchivedChatsRequest: () => void;
   closeDialog: () => void;
   setActiveTab: (tab: SettingsTab) => void;
 }
 
+function captureOpener(): HTMLElement | null {
+  return typeof document !== "undefined" &&
+    document.activeElement instanceof HTMLElement &&
+    document.activeElement !== document.body
+    ? document.activeElement
+    : null;
+}
+
 const ACTIVE_TAB_KEY = "unsloth_settings_active_tab";
 
 function loadInitialTab(): SettingsTab {
@@ -53,17 +66,21 @@ export const useSettingsDialogStore = create<SettingsDialogState>((set) => ({
   open: false,
   activeTab: loadInitialTab(),
   opener: null,
+  archivedChatsRequested: false,
   openDialog: (tab) =>
     set((state) => ({
       open: true,
       activeTab: tab ?? state.activeTab,
-      opener:
-        typeof document !== "undefined" &&
-        document.activeElement instanceof HTMLElement &&
-        document.activeElement !== document.body
-          ? document.activeElement
-          : null,
+      opener: captureOpener(),
     })),
+  openArchivedChats: () =>
+    set({
+      open: true,
+      activeTab: "chat",
+      archivedChatsRequested: true,
+      opener: captureOpener(),
+    }),
+  consumeArchivedChatsRequest: () => set({ archivedChatsRequested: false }),
   // Do NOT clear `opener` here. onCloseAutoFocus runs on the next render
   // pass after `open: false` lands, so the opener must still be readable
   // from the store at that point. The next openDialog() overwrites it.

studio/frontend/src/features/settings/tabs/about-tab.tsx

@@ -19,6 +19,7 @@ import { HugeiconsIcon } from "@hugeicons/react";
 import { useEffect, useState } from "react";
 import { SettingsRow } from "../components/settings-row";
 import { SettingsSection } from "../components/settings-section";
+import { StudioVersionSection } from "../components/studio-version-section";
 import {
   type UpdateInstallSource,
   UpdateStudioInstructions,
@@ -44,31 +45,6 @@ function isUpdateInstallSource(value: unknown): value is UpdateInstallSource {
   );
 }
 
-async function fetchStudioVersions(): Promise<{
-  packageVersion: string | null;
-  studioVersion: string | null;
-}> {
-  try {
-    const token = getAuthToken();
-    const headers = new Headers();
-    if (token) headers.set("Authorization", `Bearer ${token}`);
-    const res = await fetch(apiUrl("/api/health"), { headers });
-    if (!res.ok) {
-      return { packageVersion: null, studioVersion: null };
-    }
-    const data = (await res.json()) as ApiObject;
-    const packageVersion = data.version;
-    const studioVersion = data.studio_version;
-    return {
-      packageVersion:
-        typeof packageVersion === "string" ? packageVersion : null,
-      studioVersion: typeof studioVersion === "string" ? studioVersion : null,
-    };
-  } catch {
-    return { packageVersion: null, studioVersion: null };
-  }
-}
-
 async function fetchInstallSource(): Promise<UpdateInstallSource> {
   if (isTauri) {
     return "unknown";
@@ -99,8 +75,6 @@ export function AboutTab() {
   const deviceType = usePlatformStore((s) => s.deviceType);
   const defaultShell = deviceType === "windows" ? "windows" : "unix";
   const [shutdownOpen, setShutdownOpen] = useState(false);
-  const [packageVersion, setPackageVersion] = useState("dev");
-  const [studioVersion, setStudioVersion] = useState("dev");
   const [installSource, setInstallSource] = useState<
     UpdateInstallSource | "loading"
   >("loading");
@@ -108,18 +82,6 @@ export function AboutTab() {
   useEffect(() => {
     let canceled = false;
 
-    fetchStudioVersions().then((nextVersions) => {
-      if (canceled) {
-        return;
-      }
-      if (nextVersions.packageVersion) {
-        setPackageVersion(nextVersions.packageVersion);
-      }
-      if (nextVersions.studioVersion) {
-        setStudioVersion(nextVersions.studioVersion);
-      }
-    });
-
     fetchInstallSource().then((nextInstallSource) => {
       if (!canceled) {
         setInstallSource(nextInstallSource);
@@ -142,18 +104,7 @@ export function AboutTab() {
         </p>
       </header>
 
-      <SettingsSection title="Unsloth">
-        <SettingsRow label={t("settings.about.studioVersion")}>
-          <code className="font-mono text-xs text-muted-foreground">
-            {studioVersion}
-          </code>
-        </SettingsRow>
-        <SettingsRow label={t("settings.about.packageVersion")}>
-          <code className="font-mono text-xs text-muted-foreground">
-            {packageVersion}
-          </code>
-        </SettingsRow>
-      </SettingsSection>
+      <StudioVersionSection />
 
       <SettingsSection title={t("settings.about.updates")}>
         <div className="py-2">

studio/frontend/src/features/settings/tabs/chat-tab.tsx

@@ -30,6 +30,7 @@ import {
   downloadChatExport,
   importConversationsFromFile,
   useChatRuntimeStore,
+  useChatPreferencesStore,
   type PlusMenuItemId,
   usePlusMenuPrefsStore,
 } from "@/features/chat";
@@ -50,6 +51,8 @@ import { useEffect, useRef, useState } from "react";
 import type { ReactNode } from "react";
 import { SettingsRow } from "../components/settings-row";
 import { SettingsSection } from "../components/settings-section";
+import { ArchivedChatsDialog } from "../components/archived-chats-dialog";
+import { useSettingsDialogStore } from "../stores/settings-dialog-store";
 
 // Adjustable "+" menu items shown in settings, in display order. Icons mirror
 // the ones used in the composer + menu itself.
@@ -134,7 +137,21 @@ export function ChatTab() {
   const plusPins = usePlusMenuPrefsStore((state) => state.pins);
   const togglePlusPin = usePlusMenuPrefsStore((state) => state.togglePin);
   const [confirmOpen, setConfirmOpen] = useState(false);
+  const [archivedOpen, setArchivedOpen] = useState(false);
   const [count, setCount] = useState<number | null>(null);
+  const archivedChatsRequested = useSettingsDialogStore(
+    (s) => s.archivedChatsRequested,
+  );
+  const consumeArchivedChatsRequest = useSettingsDialogStore(
+    (s) => s.consumeArchivedChatsRequest,
+  );
+
+  // Open the archived list when the archive toast asked to jump here.
+  useEffect(() => {
+    if (!archivedChatsRequested) return;
+    setArchivedOpen(true);
+    consumeArchivedChatsRequest();
+  }, [archivedChatsRequested, consumeArchivedChatsRequest]);
   const [exporting, setExporting] = useState(false);
   const [clearing, setClearing] = useState(false);
   const collapseHtmlArtifacts = useChatRuntimeStore(
@@ -152,6 +169,12 @@ export function ChatTab() {
   const hydratePersistedSettings = useChatRuntimeStore(
     (state) => state.hydratePersistedSettings,
   );
+  const confirmDeleteChats = useChatPreferencesStore(
+    (state) => state.confirmDeleteChats,
+  );
+  const setConfirmDeleteChats = useChatPreferencesStore(
+    (state) => state.setConfirmDeleteChats,
+  );
 
   useEffect(() => {
     void countAllChats().then(setCount);
@@ -303,6 +326,29 @@ export function ChatTab() {
       </SettingsSection>
 
       <SettingsSection title={t("settings.chat.data")}>
+        <SettingsRow
+          label="Archived chats"
+          description="View and manage chats you have archived."
+        >
+          <Button
+            variant="outline"
+            size="sm"
+            onClick={() => setArchivedOpen(true)}
+          >
+            Manage
+          </Button>
+        </SettingsRow>
+
+        <SettingsRow
+          label="Confirm before deleting"
+          description="Ask for confirmation before a chat is deleted. Turn off to delete instantly."
+        >
+          <Switch
+            checked={confirmDeleteChats}
+            onCheckedChange={setConfirmDeleteChats}
+          />
+        </SettingsRow>
+
         <SettingsRow
           label={t("settings.chat.exportHistory")}
           description={t("settings.chat.exportHistoryDescription")}
@@ -405,6 +451,8 @@ export function ChatTab() {
 
         <SettingsRow
           destructive
+          // divide-y already draws the row separator; drop the extra border.
+          className="border-t-0 mt-0 pt-3"
           label={t("settings.chat.clearAllChats")}
           description={
             count === null
@@ -429,6 +477,8 @@ export function ChatTab() {
         </SettingsRow>
       </SettingsSection>
 
+      <ArchivedChatsDialog open={archivedOpen} onOpenChange={setArchivedOpen} />
+
       <Dialog open={confirmOpen} onOpenChange={setConfirmOpen}>
         <DialogContent className="max-w-md">
           <DialogHeader>

studio/frontend/src/features/settings/tabs/general-tab.tsx

@@ -37,6 +37,7 @@ import { useEffect, useRef, useState } from "react";
 import { Eye, EyeOff } from "lucide-react";
 import { SettingsRow } from "../components/settings-row";
 import { SettingsSection } from "../components/settings-section";
+import { StudioVersionSection } from "../components/studio-version-section";
 
 // Keys cleared by "Reset all local preferences".
 // NEVER include auth/session keys here — clearing them would log the user out
@@ -59,6 +60,7 @@ const PREFS_KEYS: string[] = [
   "unsloth_tool_call_timeout",
   "unsloth_chat_inference_params",
   "unsloth_chat_collapsible_state",
+  "unsloth_chat_preferences",
   // Chat presets
   "unsloth_chat_custom_presets",
   "unsloth_chat_active_preset",
@@ -252,6 +254,8 @@ export function GeneralTab() {
         </p>
       </header>
 
+      <StudioVersionSection />
+
       <SettingsSection title={t("settings.general.account")}>
         <SettingsRow
           label={t("settings.general.huggingFaceToken")}

studio/frontend/src/hooks/use-llama-update-check.ts

@@ -68,6 +68,11 @@ async function fetchStatus(
   }
 }
 
+// Update probes force a refresh so a newly published build is not masked by the
+// backend's 24h release cache (the banner would otherwise lag up to a day). The
+// job-progress poll below stays cached; it only reads local job state.
+const recheckStatus = () => fetchStatus(true);
+
 interface UseLlamaUpdateCheckOptions {
   enabled?: boolean;
 }
@@ -161,13 +166,13 @@ export function useLlamaUpdateCheck({
     let canceled = false;
 
     const firstTimer = setTimeout(() => {
-      fetchStatus().then((s) => {
+      recheckStatus().then((s) => {
         if (!canceled) surfaceIfAvailable(s);
       });
     }, FIRST_CHECK_DELAY_MS);
 
     const reminder = setInterval(() => {
-      fetchStatus().then((s) => {
+      recheckStatus().then((s) => {
         if (!canceled) surfaceIfAvailable(s);
       });
     }, REMINDER_INTERVAL_MS);
@@ -194,7 +199,7 @@ export function useLlamaUpdateCheck({
     if (snoozeTimer.current) clearTimeout(snoozeTimer.current);
     snoozeTimer.current = setTimeout(() => {
       snoozeTimer.current = null;
-      fetchStatus().then(surfaceIfAvailable);
+      recheckStatus().then(surfaceIfAvailable);
     }, SNOOZE_DELAY_MS);
   }, [surfaceIfAvailable]);
 

studio/frontend/src/i18n/locales/en.ts

@@ -152,6 +152,13 @@ export const en = {
       description: "How your profile appears in Unsloth.",
       changePicture: "Change profile picture",
       displayName: "Display name",
+      nickname: "What should Unsloth call you?",
+      nicknamePlaceholder: "Nickname",
+      nicknameSaved: "Preferred name saved",
+      avatarShape: "Profile picture shape",
+      avatarShapeCircle: "Circle",
+      avatarShapeRounded: "Rounded",
+      chooseSloth: "Or pick a sloth",
       nameSaved: "Profile name saved",
       namePersistErrorTitle: "Could not persist profile name",
       namePersistErrorDescription:

studio/frontend/src/i18n/locales/zh-CN.ts

@@ -139,6 +139,13 @@ export const zhCN = {
       description: "更新你在 Unsloth 中显示的个人资料。",
       changePicture: "更换头像",
       displayName: "显示名称",
+      nickname: "Unsloth 应该怎么称呼你？",
+      nicknamePlaceholder: "昵称",
+      nicknameSaved: "称呼名称已保存",
+      avatarShape: "头像形状",
+      avatarShapeCircle: "圆形",
+      avatarShapeRounded: "圆角矩形",
+      chooseSloth: "或选择一只树懒",
       nameSaved: "个人资料名称已保存",
       namePersistErrorTitle: "无法持久保存个人资料名称",
       namePersistErrorDescription:

studio/frontend/src/index.css

@@ -578,6 +578,11 @@
 	.sidebar-row-action-glyph {
 		@apply inline-flex size-6 items-center justify-center rounded-full text-sidebar-foreground/55;
 	}
+	/* Secondary row action (the pinned-chat unpin button) sits just left of
+	   the primary "…" options button. */
+	.sidebar-row-action.is-unpin-action {
+		right: 1.875rem;
+	}
 
 	/* Branch picker chevron buttons sit beside action bar icon buttons
 	   (size-8, rounded-full). Height + radius match for visual
@@ -744,7 +749,7 @@
 	}
 
 	.tooltip-compact {
-		@apply rounded-[9px] border-transparent bg-black px-2.5 py-1.5 text-[11px] font-medium leading-snug text-white shadow-md;
+		@apply rounded-[11px] border-transparent bg-black px-2.5 py-1.5 text-[11px] font-medium leading-snug text-white shadow-md;
 	}
 
 	/* Dialog popups: borderless; chatbox shadow in light, flat card
@@ -1784,6 +1789,12 @@
 	padding-bottom: 14px !important;
 }
 
+/* Downloading state shows a progress bar as the last row; give it a little
+   extra breathing room below the bar. */
+[data-sonner-toast][data-styled='true'].chat-model-load-toast:has([role='progressbar']) {
+	padding-bottom: 18px !important;
+}
+
 [data-sonner-toast][data-styled='true'].chat-model-loaded-toast [data-close-button] {
 	top: calc(50% - 0.25px) !important;
 	transform: translateY(-50%) !important;

studio/frontend/src/lib/chevron-icons.ts

@@ -0,0 +1,34 @@
+// 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 { IconSvgElement } from "@hugeicons/react";
+
+// Standard chevrons: straight-line shapes shared across dropdown triggers and
+// submenu arrows so every menu indicator matches the composer's menus.
+export const ChevronDownStandardIcon: IconSvgElement = [
+  [
+    "path",
+    {
+      d: "M5.99977 9.00005L11.9998 15L17.9998 9",
+      stroke: "currentColor",
+      strokeLinecap: "round",
+      strokeLinejoin: "round",
+      strokeWidth: "1.5",
+      key: "0",
+    },
+  ],
+];
+
+export const ChevronRightStandardIcon: IconSvgElement = [
+  [
+    "path",
+    {
+      d: "M9 6L15 12L9 18",
+      stroke: "currentColor",
+      strokeLinecap: "round",
+      strokeLinejoin: "round",
+      strokeWidth: "1.5",
+      key: "0",
+    },
+  ],
+];

studio/install_llama_prebuilt.py

@@ -5932,9 +5932,9 @@ def resolve_install_attempts(
 
 def _linux_published_attempts(host: HostInfo, bundle: PublishedReleaseBundle) -> list[AssetChoice]:
     """Build the install attempts for a fork Linux host from a manifest-described
-    bundle: CUDA (with a CPU fallback), per-gfx ROCm, or CPU. Same selection the
-    upstream filename path used, just sourced from the manifest instead of
-    reconstructed from asset names."""
+    bundle: CUDA, per-gfx ROCm, or (non-GPU) CPU. Same selection the upstream
+    filename path used, just sourced from the manifest instead of reconstructed
+    from asset names."""
     attempts: list[AssetChoice] = []
     if host.has_usable_nvidia:
         # Prefer the cudart major Studio loads at runtime (torch's bundled
@@ -5949,7 +5949,7 @@ def _linux_published_attempts(host: HostInfo, bundle: PublishedReleaseBundle) ->
         )
         if selection is not None:
             attempts.extend(selection.attempts)
-    if host.has_rocm and not host.has_usable_nvidia:
+    elif host.has_rocm:
         # Use the fork's own per-gfx ROCm bundle (hash-approved, ships the full
         # ROCm runtime). Do NOT append the CPU asset for ROCm-only hosts: if no
         # bundle covers the GPU we want validate_prebuilt_attempts to raise
@@ -5959,6 +5959,10 @@ def _linux_published_attempts(host: HostInfo, bundle: PublishedReleaseBundle) ->
         if published_rocm is not None:
             attempts.append(published_rocm)
     else:
+        # CPU-only host. A usable-NVIDIA host never reaches here -- if its CUDA
+        # selection produced nothing we want an empty attempt list so the caller
+        # source-builds with CUDA, not a CPU-only binary silently installed on a
+        # GPU host (mirrors the ROCm branch, and Windows NVIDIA).
         cpu_choice = published_asset_choice_for_kind(bundle, "linux-cpu")
         if cpu_choice is not None:
             attempts.append(cpu_choice)
@@ -6436,13 +6440,19 @@ def validate_prebuilt_attempts(
                 f"runtime_line={attempt.runtime_line} coverage_class={attempt.coverage_class}"
             )
 
-        if existing_install_dir is not None and existing_install_matches_choice(
-            existing_install_dir,
-            host,
-            llama_tag = llama_tag,
-            release_tag = release_tag,
-            choice = attempt,
-            approved_checksums = approved_checksums,
+        if (
+            existing_install_dir is not None
+            and existing_install_matches_choice(
+                existing_install_dir,
+                host,
+                llama_tag = llama_tag,
+                release_tag = release_tag,
+                choice = attempt,
+                approved_checksums = approved_checksums,
+            )
+            # Skip a matching candidate unless it still needs the DiffusionGemma
+            # backfill re-extract (gated per-attempt, not per-plan).
+            and not diffusion_visual_server_backfill_needed(existing_install_dir, host, attempt)
         ):
             log(
                 "existing llama.cpp install already matches fallback candidate "
@@ -6490,6 +6500,31 @@ def validate_prebuilt_attempts(
     raise PrebuiltFallback("no prebuilt bundle passed validation")
 
 
+def diffusion_visual_server_backfill_needed(
+    install_dir: Path, host: HostInfo, choice: AssetChoice
+) -> bool:
+    """True when an existing install matches the tag but lacks the DiffusionGemma
+    visual-server the chosen bundle ships. An install made before the visual-server
+    entered the copy allowlist matches on tag yet is missing the binary, so the
+    tag-match skip never backfills it (DiffusionGemma then fails with "runner not
+    found"). Gated to the fork ("published") bundles that actually carry it, so
+    upstream installs -- which never ship it -- can't thrash on repeated updates.
+    Once a re-extract lands the binary this returns False, so it self-limits."""
+    if choice.source_label != "published":
+        return False
+    name = "llama-diffusion-gemma-visual-server" + (".exe" if host.is_windows else "")
+    if name not in runtime_patterns_for_choice(choice):
+        return False
+    for cand in (
+        install_dir / name,
+        install_dir / "build" / "bin" / name,
+        install_dir / "build" / "bin" / "Release" / name,
+    ):
+        if cand.is_file():
+            return False
+    return True
+
+
 def install_prebuilt(
     install_dir: Path,
     llama_tag: str,
@@ -6528,11 +6563,17 @@ def install_prebuilt(
             )
             if release_plans and existing_install_matches_plan(install_dir, host, release_plans[0]):
                 current = release_plans[0]
-                log(
-                    "existing llama.cpp install already matches selected release "
-                    f"{current.release_tag} upstream_tag={current.llama_tag}; skipping download and install"
-                )
-                return
+                if diffusion_visual_server_backfill_needed(install_dir, host, current.attempts[0]):
+                    log(
+                        f"existing install matches {current.release_tag} but is missing the "
+                        "DiffusionGemma visual-server; re-extracting the bundle to backfill it"
+                    )
+                else:
+                    log(
+                        "existing llama.cpp install already matches selected release "
+                        f"{current.release_tag} upstream_tag={current.llama_tag}; skipping download and install"
+                    )
+                    return
             with tempfile.TemporaryDirectory(prefix = "unsloth-llama-prebuilt-") as tmp:
                 work_dir = Path(tmp)
                 probe_path = work_dir / "stories260K.gguf"
@@ -6540,12 +6581,19 @@ def install_prebuilt(
                 release_count = len(release_plans)
                 for release_index, plan in enumerate(release_plans):
                     choice = plan.attempts[0]
+                    backfill = diffusion_visual_server_backfill_needed(install_dir, host, choice)
                     if existing_install_matches_plan(install_dir, host, plan):
-                        log(
-                            "existing llama.cpp install already matches fallback release "
-                            f"{plan.release_tag} upstream_tag={plan.llama_tag}; skipping reinstall"
-                        )
-                        return
+                        if backfill:
+                            log(
+                                f"existing install matches fallback {plan.release_tag} but is missing "
+                                "the DiffusionGemma visual-server; re-extracting to backfill it"
+                            )
+                        else:
+                            log(
+                                "existing llama.cpp install already matches fallback release "
+                                f"{plan.release_tag} upstream_tag={plan.llama_tag}; skipping reinstall"
+                            )
+                            return
                     log(
                         "selected "
                         f"{choice.name} ({choice.source_label}) from published release "
@@ -6563,6 +6611,7 @@ def install_prebuilt(
                             release_tag = plan.release_tag,
                             approved_checksums = plan.approved_checksums,
                             initial_fallback_used = release_index > 0,
+                            # Skip is gated per-attempt inside, so pass the dir always.
                             existing_install_dir = install_dir,
                         )
                     except ExistingInstallSatisfied:

studio/setup.sh

@@ -386,6 +386,70 @@ if [[ "$keynames" == *$'\nCOLAB_'* ]]; then
     IS_COLAB=true
 fi
 
+# Resolve studio home + ownership marker before the llama-only split: the
+# llama.cpp section needs STUDIO_HOME / _STUDIO_HOME_IS_CUSTOM, but
+# UNSLOTH_STUDIO_LLAMA_ONLY=1 ('unsloth studio update') skips the base install.
+# UNSLOTH_STUDIO_HOME (or STUDIO_HOME alias) overrides the install root
+# (mirrors install.sh). UNSLOTH_STUDIO_HOME wins when both are set.
+_studio_override_var=""
+_studio_override="${UNSLOTH_STUDIO_HOME:-}"
+if [ -n "$_studio_override" ]; then
+    _studio_override_var="UNSLOTH_STUDIO_HOME"
+else
+    _studio_override="${STUDIO_HOME:-}"
+    [ -n "$_studio_override" ] && _studio_override_var="STUDIO_HOME"
+fi
+# Strip whitespace so " " is treated as unset (matches Python .strip()).
+_studio_override=$(printf '%s' "$_studio_override" | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')
+case "$_studio_override" in
+    "~") _studio_override="$HOME" ;;
+    "~/"*) _studio_override="$HOME/${_studio_override#'~/'}" ;;
+esac
+if [ -n "$_studio_override" ]; then
+    # setup.sh runs against an existing install (via 'unsloth studio update');
+    # a typo in the override must fail fast instead of materializing an
+    # empty workspace dir. Mirrors setup.ps1 behavior.
+    if [ ! -d "$_studio_override" ]; then
+        echo "ERROR: $_studio_override_var=$_studio_override does not exist." >&2
+        echo "       Run install.sh to create the install root before 'unsloth studio update'." >&2
+        exit 1
+    fi
+    [ -w "$_studio_override" ] || { echo "ERROR: $_studio_override_var=$_studio_override is not writable." >&2; exit 1; }
+    STUDIO_HOME="$(CDPATH= cd -P -- "$_studio_override" && pwd -P)" || exit 1
+else
+    STUDIO_HOME="$HOME/.unsloth/studio"
+fi
+VENV_DIR="$STUDIO_HOME/unsloth_studio"
+VENV_T5_530_DIR="$STUDIO_HOME/.venv_t5_530"
+VENV_T5_550_DIR="$STUDIO_HOME/.venv_t5_550"
+VENV_T5_510_DIR="$STUDIO_HOME/.venv_t5_510"
+
+_STUDIO_OWNED_MARKER=".unsloth-studio-owned"
+_LEGACY_STUDIO_HOME="$HOME/.unsloth/studio"
+_studio_home_canon="$STUDIO_HOME"
+if [ -d "$_studio_home_canon" ]; then
+    _studio_home_canon=$(CDPATH= cd -P -- "$_studio_home_canon" 2>/dev/null && pwd -P) \
+        || _studio_home_canon="$STUDIO_HOME"
+fi
+if [ -d "$_LEGACY_STUDIO_HOME" ]; then
+    _LEGACY_STUDIO_HOME=$(CDPATH= cd -P -- "$_LEGACY_STUDIO_HOME" 2>/dev/null && pwd -P) \
+        || _LEGACY_STUDIO_HOME="$HOME/.unsloth/studio"
+fi
+_STUDIO_HOME_IS_CUSTOM=false
+if [ "$_studio_home_canon" != "$_LEGACY_STUDIO_HOME" ]; then
+    _STUDIO_HOME_IS_CUSTOM=true
+fi
+_assert_studio_owned_or_absent() {
+    _aso_dir="$1"
+    _aso_label="$2"
+    [ -d "$_aso_dir" ] || return 0
+    if [ "$_STUDIO_HOME_IS_CUSTOM" = true ] && [ ! -f "$_aso_dir/$_STUDIO_OWNED_MARKER" ]; then
+        echo "ERROR: $_aso_dir already exists and is not marked as a Studio-owned $_aso_label." >&2
+        echo "       Move it aside or choose an empty UNSLOTH_STUDIO_HOME before re-running." >&2
+        exit 1
+    fi
+}
+
 if [ "$_LLAMA_ONLY" != "1" ]; then
 # ── Detect whether frontend needs building ──
 # Skip if SKIP_STUDIO_FRONTEND=1 (Tauri desktop app bundles its own frontend),
@@ -605,40 +669,6 @@ if [ -d "$SCRIPT_DIR/backend/core/data_recipe/oxc-validator" ] && command -v npm
 fi
 
 # ── Python venv + deps ──
-# UNSLOTH_STUDIO_HOME (or STUDIO_HOME alias) overrides the install root
-# (mirrors install.sh). UNSLOTH_STUDIO_HOME wins when both are set.
-_studio_override_var=""
-_studio_override="${UNSLOTH_STUDIO_HOME:-}"
-if [ -n "$_studio_override" ]; then
-    _studio_override_var="UNSLOTH_STUDIO_HOME"
-else
-    _studio_override="${STUDIO_HOME:-}"
-    [ -n "$_studio_override" ] && _studio_override_var="STUDIO_HOME"
-fi
-# Strip whitespace so " " is treated as unset (matches Python .strip()).
-_studio_override=$(printf '%s' "$_studio_override" | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')
-case "$_studio_override" in
-    "~") _studio_override="$HOME" ;;
-    "~/"*) _studio_override="$HOME/${_studio_override#'~/'}" ;;
-esac
-if [ -n "$_studio_override" ]; then
-    # setup.sh runs against an existing install (via 'unsloth studio update');
-    # a typo in the override must fail fast instead of materializing an
-    # empty workspace dir. Mirrors setup.ps1 behavior.
-    if [ ! -d "$_studio_override" ]; then
-        echo "ERROR: $_studio_override_var=$_studio_override does not exist." >&2
-        echo "       Run install.sh to create the install root before 'unsloth studio update'." >&2
-        exit 1
-    fi
-    [ -w "$_studio_override" ] || { echo "ERROR: $_studio_override_var=$_studio_override is not writable." >&2; exit 1; }
-    STUDIO_HOME="$(CDPATH= cd -P -- "$_studio_override" && pwd -P)" || exit 1
-else
-    STUDIO_HOME="$HOME/.unsloth/studio"
-fi
-VENV_DIR="$STUDIO_HOME/unsloth_studio"
-VENV_T5_530_DIR="$STUDIO_HOME/.venv_t5_530"
-VENV_T5_550_DIR="$STUDIO_HOME/.venv_t5_550"
-VENV_T5_510_DIR="$STUDIO_HOME/.venv_t5_510"
 
 [ -d "$REPO_ROOT/.venv" ] && rm -rf "$REPO_ROOT/.venv"
 [ -d "$REPO_ROOT/.venv_overlay" ] && rm -rf "$REPO_ROOT/.venv_overlay"
@@ -757,38 +787,6 @@ fi
 # Gemma 4 models need transformers>=5.5.0; Gemma 4 Unified needs 5.10.x.
 # Pre-install into separate directories to avoid runtime pip overhead.
 # The training subprocess prepends the appropriate dir to sys.path.
-#
-# Runs outside the _SKIP_PYTHON_DEPS gate so that upgrades from legacy
-# single .venv_t5 are always migrated to the tiered layout.
-# why: in env-override mode $STUDIO_HOME is user-chosen; require the
-# ownership marker before rm -rf so unrelated dirs survive. Gated on the
-# canonical comparison so an override pointing at the legacy default still
-# behaves like a default install.
-_STUDIO_OWNED_MARKER=".unsloth-studio-owned"
-_LEGACY_STUDIO_HOME="$HOME/.unsloth/studio"
-_studio_home_canon="$STUDIO_HOME"
-if [ -d "$_studio_home_canon" ]; then
-    _studio_home_canon=$(CDPATH= cd -P -- "$_studio_home_canon" 2>/dev/null && pwd -P) \
-        || _studio_home_canon="$STUDIO_HOME"
-fi
-if [ -d "$_LEGACY_STUDIO_HOME" ]; then
-    _LEGACY_STUDIO_HOME=$(CDPATH= cd -P -- "$_LEGACY_STUDIO_HOME" 2>/dev/null && pwd -P) \
-        || _LEGACY_STUDIO_HOME="$HOME/.unsloth/studio"
-fi
-_STUDIO_HOME_IS_CUSTOM=false
-if [ "$_studio_home_canon" != "$_LEGACY_STUDIO_HOME" ]; then
-    _STUDIO_HOME_IS_CUSTOM=true
-fi
-_assert_studio_owned_or_absent() {
-    _aso_dir="$1"
-    _aso_label="$2"
-    [ -d "$_aso_dir" ] || return 0
-    if [ "$_STUDIO_HOME_IS_CUSTOM" = true ] && [ ! -f "$_aso_dir/$_STUDIO_OWNED_MARKER" ]; then
-        echo "ERROR: $_aso_dir already exists and is not marked as a Studio-owned $_aso_label." >&2
-        echo "       Move it aside or choose an empty UNSLOTH_STUDIO_HOME before re-running." >&2
-        exit 1
-    fi
-}
 _target_has_pkg_version() {
     _thpv_dir="$1"
     _thpv_pkg="$2"

tests/studio/install/test_launch_studio_launcher.py

@@ -0,0 +1,50 @@
+"""Guard install.ps1's launch-studio.vbs against re-introducing the AV-heuristic
+shape: a WScript .vbs spawning a hidden, ExecutionPolicy-Bypass PowerShell."""
+
+import re
+from pathlib import Path
+
+import pytest
+
+REPO_ROOT = Path(__file__).resolve().parents[3]
+INSTALL_PS1 = REPO_ROOT / "install.ps1"
+
+
+def _vbs_block() -> str:
+    text = INSTALL_PS1.read_text(encoding = "utf-8")
+    m = re.search(r'\$vbsContent\s*=\s*@"\r?\n(.*?)\r?\n"@', text, re.S)
+    assert m, "could not locate the $vbsContent here-string in install.ps1"
+    return m.group(1)
+
+
+def test_install_ps1_present():
+    assert INSTALL_PS1.is_file(), f"missing {INSTALL_PS1}"
+
+
+def test_vbs_does_not_pass_windowstyle_hidden():
+    vbs = _vbs_block()
+    assert "-WindowStyle Hidden" not in vbs, (
+        "launch-studio.vbs must not pass -WindowStyle Hidden to PowerShell: the "
+        "window is already hidden by shell.Run(cmd, 0, False); the redundant flag "
+        "only adds the hidden-PowerShell token that AV heuristics flag."
+    )
+
+
+def test_vbs_stays_windowless_via_shell_run():
+    vbs = _vbs_block()
+    assert re.search(r"shell\.Run\s+cmd\s*,\s*0\s*,\s*False", vbs), (
+        "launcher must remain windowless via shell.Run(cmd, 0, False) "
+        "(intWindowStyle 0 = hidden)."
+    )
+
+
+def test_vbs_keeps_bypass_and_file_invocation():
+    # Bypass lets the unsigned local .ps1 run under the default Restricted policy.
+    vbs = _vbs_block()
+    assert "-ExecutionPolicy Bypass" in vbs
+    assert "-File" in vbs
+    assert "powershell" in vbs
+
+
+if __name__ == "__main__":
+    raise SystemExit(pytest.main([__file__, "-v"]))

tests/studio/install/test_selection_logic.py

@@ -2611,6 +2611,59 @@ class TestDirectLinuxNvidiaCpuGate:
         assert [a.install_kind for a in plan.attempts] == ["linux-cpu"]
 
 
+class TestLinuxPublishedAttemptsNvidiaCpuGate:
+    """Live fork-manifest path (_linux_published_attempts): an NVIDIA host whose
+    CUDA selection finds nothing must NOT be handed the manifest's CPU bundle --
+    the attempt list stays empty so the caller source-builds with CUDA instead of
+    silently installing a CPU-only binary on a GPU host. CPU-only hosts still get
+    the CPU bundle. Mirrors the ROCm policy and TestDirectLinuxNvidiaCpuGate (the
+    latter covers direct_linux_release_plan, which is off the live path, this the
+    live path)."""
+
+    def _cpu_only_bundle(self):
+        return make_release(
+            [
+                make_artifact(
+                    "app-b8508-linux-x64-cpu.tar.gz",
+                    install_kind = "linux-cpu",
+                    runtime_line = None,
+                    coverage_class = None,
+                    supported_sms = [],
+                    min_sm = None,
+                    max_sm = None,
+                    bundle_profile = None,
+                    rank = 1000,
+                ),
+            ]
+        )
+
+    def test_nvidia_host_without_cuda_line_gets_no_cpu_attempt(self, monkeypatch):
+        monkeypatch.setattr(
+            INSTALL_LLAMA_PREBUILT,
+            "detect_torch_cuda_runtime_preference",
+            lambda host: CudaRuntimePreference(runtime_line = None, selection_log = []),
+        )
+        monkeypatch.setattr(
+            INSTALL_LLAMA_PREBUILT,
+            "detected_linux_runtime_lines",
+            lambda: (["cuda13"], {"cuda13": ["/usr/local/cuda/lib64"]}),
+        )
+        host = make_host(driver_cuda_version = (13, 1), compute_caps = ["100"])
+        attempts = INSTALL_LLAMA_PREBUILT._linux_published_attempts(host, self._cpu_only_bundle())
+        assert attempts == []
+
+    def test_cpu_host_gets_cpu_attempt(self):
+        host = make_host(
+            nvidia_smi = None,
+            driver_cuda_version = None,
+            compute_caps = [],
+            has_physical_nvidia = False,
+            has_usable_nvidia = False,
+        )
+        attempts = INSTALL_LLAMA_PREBUILT._linux_published_attempts(host, self._cpu_only_bundle())
+        assert [a.install_kind for a in attempts] == ["linux-cpu"]
+
+
 # ===========================================================================
 # N.1d. published_windows_cuda_attempts -- version-dynamic ordering seed
 # ===========================================================================

tests/test_studio_install_workspace_guard.py

@@ -873,15 +873,20 @@ def test_llama_cpp_search_roots_handles_studio_root_oserror():
     llama_cpp = (
         REPO_ROOT / "studio" / "backend" / "core" / "inference" / "llama_cpp.py"
     ).read_text()
-    find_block_start = llama_cpp.index("_find_llama_server_binary")
-    find_block = llama_cpp[find_block_start : find_block_start + 4000]
-    assert (
-        "except (ImportError, OSError, ValueError):" in find_block
+
+    def _method_body(name: str) -> str:
+        # Whole method body (def to next sibling def), so the check survives the
+        # function growing past any fixed-size window.
+        start = llama_cpp.index(f"def {name}")
+        indent = " " * (start - llama_cpp.rfind("\n", 0, start) - 1)
+        nxt = llama_cpp.find(f"\n{indent}def ", start + 1)
+        return llama_cpp[start : nxt if nxt != -1 else len(llama_cpp)]
+
+    assert "except (ImportError, OSError, ValueError):" in _method_body(
+        "_find_llama_server_binary"
     ), "_find_llama_server_binary must catch (ImportError, OSError, ValueError) from studio_root()"
-    kill_def_idx = llama_cpp.index("def _kill_orphaned_servers")
-    kill_block = llama_cpp[kill_def_idx : kill_def_idx + 4000]
-    assert (
-        "except (ImportError, OSError, ValueError):" in kill_block
+    assert "except (ImportError, OSError, ValueError):" in _method_body(
+        "_kill_orphaned_servers"
     ), "sibling _kill_orphaned_servers must keep its (ImportError, OSError, ValueError) handler"
 
 

unsloth/_auto_install.py

@@ -40,4 +40,4 @@ else: raise RuntimeError(f"Torch = {v} too new!")
 if v > V('2.6.9') and cuda not in ("11.8", "12.6", "12.8", "13.0"): raise RuntimeError(f"CUDA = {cuda} not supported!")
 if v >= V('2.10.0') and cuda not in ("12.6", "12.8", "13.0"): raise RuntimeError(f"Torch 2.10 requires CUDA 12.6, 12.8, or 13.0! Got CUDA = {cuda}")
 x = x.format(cuda.replace(".", ""), "-ampere" if False else "") # is_ampere is broken due to flash-attn
-print(f'pip install --upgrade pip && pip install --no-deps git+https://github.com/unslothai/unsloth-zoo.git && pip install "unsloth[{x}] @ git+https://github.com/unslothai/unsloth.git" --no-build-isolation')
+print(f'pip install --upgrade pip setuptools wheel && pip install --no-deps git+https://github.com/unslothai/unsloth-zoo.git && pip install "unsloth[{x}] @ git+https://github.com/unslothai/unsloth.git" --no-build-isolation')

unsloth/models/_utils.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "2026.6.5"
+__version__ = "2026.6.7"
 
 __all__ = [
     "SUPPORTS_BFLOAT16",