diff --git a/api/core/tools/mcp_tool/tool.py b/api/core/tools/mcp_tool/tool.py
index ef9e9c103a..1d439323f2 100644
--- a/api/core/tools/mcp_tool/tool.py
+++ b/api/core/tools/mcp_tool/tool.py
@@ -3,8 +3,8 @@ from __future__ import annotations
 import base64
 import json
 import logging
-from collections.abc import Generator
-from typing import Any
+from collections.abc import Generator, Mapping
+from typing import Any, cast
 
 from core.mcp.auth_client import MCPClientWithAuthRetry
 from core.mcp.error import MCPConnectionError
@@ -17,6 +17,7 @@ from core.mcp.types import (
     TextContent,
     TextResourceContents,
 )
+from core.model_runtime.entities.llm_entities import LLMUsage, LLMUsageMetadata
 from core.tools.__base.tool import Tool
 from core.tools.__base.tool_runtime import ToolRuntime
 from core.tools.entities.tool_entities import ToolEntity, ToolInvokeMessage, ToolProviderType
@@ -46,6 +47,7 @@ class MCPTool(Tool):
         self.headers = headers or {}
         self.timeout = timeout
         self.sse_read_timeout = sse_read_timeout
+        self._latest_usage = LLMUsage.empty_usage()
 
     def tool_provider_type(self) -> ToolProviderType:
         return ToolProviderType.MCP
@@ -59,6 +61,10 @@ class MCPTool(Tool):
         message_id: str | None = None,
     ) -> Generator[ToolInvokeMessage, None, None]:
         result = self.invoke_remote_mcp_tool(tool_parameters)
+
+        # Extract usage metadata from MCP protocol's _meta field
+        self._latest_usage = self._derive_usage_from_result(result)
+
         # handle dify tool output
         for content in result.content:
             if isinstance(content, TextContent):
@@ -120,6 +126,99 @@ class MCPTool(Tool):
         for item in json_list:
             yield self.create_json_message(item)
 
+    @property
+    def latest_usage(self) -> LLMUsage:
+        return self._latest_usage
+
+    @classmethod
+    def _derive_usage_from_result(cls, result: CallToolResult) -> LLMUsage:
+        """
+        Extract usage metadata from MCP tool result's _meta field.
+
+        The MCP protocol's _meta field (aliased as 'meta' in Python) can contain
+        usage information such as token counts, costs, and other metadata.
+
+        Args:
+            result: The CallToolResult from MCP tool invocation
+
+        Returns:
+            LLMUsage instance with values from meta or empty_usage if not found
+        """
+        # Extract usage from the meta field if present
+        if result.meta:
+            usage_dict = cls._extract_usage_dict(result.meta)
+            if usage_dict is not None:
+                return LLMUsage.from_metadata(cast(LLMUsageMetadata, cast(object, dict(usage_dict))))
+
+        return LLMUsage.empty_usage()
+
+    @classmethod
+    def _extract_usage_dict(cls, payload: Mapping[str, Any]) -> Mapping[str, Any] | None:
+        """
+        Recursively search for usage dictionary in the payload.
+
+        The MCP protocol's _meta field can contain usage data in various formats:
+        - Direct usage field: {"usage": {...}}
+        - Nested in metadata: {"metadata": {"usage": {...}}}
+        - Or nested within other fields
+
+        Args:
+            payload: The payload to search for usage data
+
+        Returns:
+            The usage dictionary if found, None otherwise
+        """
+        # Check for direct usage field
+        usage_candidate = payload.get("usage")
+        if isinstance(usage_candidate, Mapping):
+            return usage_candidate
+
+        # Check for metadata nested usage
+        metadata_candidate = payload.get("metadata")
+        if isinstance(metadata_candidate, Mapping):
+            usage_candidate = metadata_candidate.get("usage")
+            if isinstance(usage_candidate, Mapping):
+                return usage_candidate
+
+        # Check for common token counting fields directly in payload
+        # Some MCP servers may include token counts directly
+        if "total_tokens" in payload or "prompt_tokens" in payload or "completion_tokens" in payload:
+            usage_dict: dict[str, Any] = {}
+            for key in (
+                "prompt_tokens",
+                "completion_tokens",
+                "total_tokens",
+                "prompt_unit_price",
+                "completion_unit_price",
+                "total_price",
+                "currency",
+                "prompt_price_unit",
+                "completion_price_unit",
+                "prompt_price",
+                "completion_price",
+                "latency",
+                "time_to_first_token",
+                "time_to_generate",
+            ):
+                if key in payload:
+                    usage_dict[key] = payload[key]
+            if usage_dict:
+                return usage_dict
+
+        # Recursively search through nested structures
+        for value in payload.values():
+            if isinstance(value, Mapping):
+                found = cls._extract_usage_dict(value)
+                if found is not None:
+                    return found
+            elif isinstance(value, list) and not isinstance(value, (str, bytes, bytearray)):
+                for item in value:
+                    if isinstance(item, Mapping):
+                        found = cls._extract_usage_dict(item)
+                        if found is not None:
+                            return found
+        return None
+
     def fork_tool_runtime(self, runtime: ToolRuntime) -> MCPTool:
         return MCPTool(
             entity=self.entity,
diff --git a/api/pyproject.toml b/api/pyproject.toml
index 3d61c652f5..f6f47403df 100644
--- a/api/pyproject.toml
+++ b/api/pyproject.toml
@@ -85,7 +85,7 @@ dependencies = [
     "starlette==0.49.1",
     "tiktoken~=0.9.0",
     "transformers~=4.56.1",
-    "unstructured[docx,epub,md,ppt,pptx]~=0.16.1",
+    "unstructured[docx,epub,md,ppt,pptx]~=0.18.18",
     "yarl~=1.18.3",
     "webvtt-py~=0.5.1",
     "sseclient-py~=1.8.0",
diff --git a/api/tasks/document_indexing_update_task.py b/api/tasks/document_indexing_update_task.py
index 45d58c92ec..c7508c6d05 100644
--- a/api/tasks/document_indexing_update_task.py
+++ b/api/tasks/document_indexing_update_task.py
@@ -36,25 +36,19 @@ def document_indexing_update_task(dataset_id: str, document_id: str):
         document.indexing_status = "parsing"
         document.processing_started_at = naive_utc_now()
 
-        # delete all document segment and index
-        try:
-            dataset = session.query(Dataset).where(Dataset.id == dataset_id).first()
-            if not dataset:
-                raise Exception("Dataset not found")
+        dataset = session.query(Dataset).where(Dataset.id == dataset_id).first()
+        if not dataset:
+            return
 
-            index_type = document.doc_form
-            index_processor = IndexProcessorFactory(index_type).init_index_processor()
-
-            segments = session.scalars(select(DocumentSegment).where(DocumentSegment.document_id == document_id)).all()
-            if segments:
-                index_node_ids = [segment.index_node_id for segment in segments]
-
-                # delete from vector index
-                index_processor.clean(dataset, index_node_ids, with_keywords=True, delete_child_chunks=True)
-                segment_ids = [segment.id for segment in segments]
-                segment_delete_stmt = delete(DocumentSegment).where(DocumentSegment.id.in_(segment_ids))
-                session.execute(segment_delete_stmt)
+        index_type = document.doc_form
+        segments = session.scalars(select(DocumentSegment).where(DocumentSegment.document_id == document_id)).all()
+        index_node_ids = [segment.index_node_id for segment in segments]
 
+    clean_success = False
+    try:
+        index_processor = IndexProcessorFactory(index_type).init_index_processor()
+        if index_node_ids:
+            index_processor.clean(dataset, index_node_ids, with_keywords=True, delete_child_chunks=True)
             end_at = time.perf_counter()
             logger.info(
                 click.style(
@@ -64,15 +58,21 @@ def document_indexing_update_task(dataset_id: str, document_id: str):
                     fg="green",
                 )
             )
-        except Exception:
-            logger.exception("Cleaned document when document update data source or process rule failed")
+            clean_success = True
+    except Exception:
+        logger.exception("Failed to clean document index during update, document_id: %s", document_id)
 
-        try:
-            indexing_runner = IndexingRunner()
-            indexing_runner.run([document])
-            end_at = time.perf_counter()
-            logger.info(click.style(f"update document: {document.id} latency: {end_at - start_at}", fg="green"))
-        except DocumentIsPausedError as ex:
-            logger.info(click.style(str(ex), fg="yellow"))
-        except Exception:
-            logger.exception("document_indexing_update_task failed, document_id: %s", document_id)
+    if clean_success:
+        with session_factory.create_session() as session, session.begin():
+            segment_delete_stmt = delete(DocumentSegment).where(DocumentSegment.document_id == document_id)
+            session.execute(segment_delete_stmt)
+
+    try:
+        indexing_runner = IndexingRunner()
+        indexing_runner.run([document])
+        end_at = time.perf_counter()
+        logger.info(click.style(f"update document: {document.id} latency: {end_at - start_at}", fg="green"))
+    except DocumentIsPausedError as ex:
+        logger.info(click.style(str(ex), fg="yellow"))
+    except Exception:
+        logger.exception("document_indexing_update_task failed, document_id: %s", document_id)
diff --git a/api/tests/unit_tests/tools/test_mcp_tool.py b/api/tests/unit_tests/tools/test_mcp_tool.py
index a527773e4e..5930b63f58 100644
--- a/api/tests/unit_tests/tools/test_mcp_tool.py
+++ b/api/tests/unit_tests/tools/test_mcp_tool.py
@@ -1,4 +1,5 @@
 import base64
+from decimal import Decimal
 from unittest.mock import Mock, patch
 
 import pytest
@@ -9,8 +10,10 @@ from core.mcp.types import (
     CallToolResult,
     EmbeddedResource,
     ImageContent,
+    TextContent,
     TextResourceContents,
 )
+from core.model_runtime.entities.llm_entities import LLMUsage
 from core.tools.__base.tool_runtime import ToolRuntime
 from core.tools.entities.common_entities import I18nObject
 from core.tools.entities.tool_entities import ToolEntity, ToolIdentity, ToolInvokeMessage
@@ -120,3 +123,231 @@ class TestMCPToolInvoke:
         # Validate values
         values = {m.message.variable_name: m.message.variable_value for m in var_msgs}
         assert values == {"a": 1, "b": "x"}
+
+
+class TestMCPToolUsageExtraction:
+    """Test usage metadata extraction from MCP tool results."""
+
+    def test_extract_usage_dict_from_direct_usage_field(self) -> None:
+        """Test extraction when usage is directly in meta.usage field."""
+        meta = {
+            "usage": {
+                "prompt_tokens": 100,
+                "completion_tokens": 50,
+                "total_tokens": 150,
+                "total_price": "0.001",
+                "currency": "USD",
+            }
+        }
+        usage_dict = MCPTool._extract_usage_dict(meta)
+        assert usage_dict is not None
+        assert usage_dict["prompt_tokens"] == 100
+        assert usage_dict["completion_tokens"] == 50
+        assert usage_dict["total_tokens"] == 150
+        assert usage_dict["total_price"] == "0.001"
+        assert usage_dict["currency"] == "USD"
+
+    def test_extract_usage_dict_from_nested_metadata(self) -> None:
+        """Test extraction when usage is nested in meta.metadata.usage."""
+        meta = {
+            "metadata": {
+                "usage": {
+                    "prompt_tokens": 200,
+                    "completion_tokens": 100,
+                    "total_tokens": 300,
+                }
+            }
+        }
+        usage_dict = MCPTool._extract_usage_dict(meta)
+        assert usage_dict is not None
+        assert usage_dict["prompt_tokens"] == 200
+        assert usage_dict["total_tokens"] == 300
+
+    def test_extract_usage_dict_from_flat_token_fields(self) -> None:
+        """Test extraction when token counts are directly in meta."""
+        meta = {
+            "prompt_tokens": 150,
+            "completion_tokens": 75,
+            "total_tokens": 225,
+            "currency": "EUR",
+        }
+        usage_dict = MCPTool._extract_usage_dict(meta)
+        assert usage_dict is not None
+        assert usage_dict["prompt_tokens"] == 150
+        assert usage_dict["completion_tokens"] == 75
+        assert usage_dict["total_tokens"] == 225
+        assert usage_dict["currency"] == "EUR"
+
+    def test_extract_usage_dict_recursive(self) -> None:
+        """Test recursive search through nested structures."""
+        meta = {
+            "custom": {
+                "nested": {
+                    "usage": {
+                        "total_tokens": 500,
+                        "prompt_tokens": 300,
+                        "completion_tokens": 200,
+                    }
+                }
+            }
+        }
+        usage_dict = MCPTool._extract_usage_dict(meta)
+        assert usage_dict is not None
+        assert usage_dict["total_tokens"] == 500
+
+    def test_extract_usage_dict_from_list(self) -> None:
+        """Test extraction from nested list structures."""
+        meta = {
+            "items": [
+                {"usage": {"total_tokens": 100}},
+                {"other": "data"},
+            ]
+        }
+        usage_dict = MCPTool._extract_usage_dict(meta)
+        assert usage_dict is not None
+        assert usage_dict["total_tokens"] == 100
+
+    def test_extract_usage_dict_returns_none_when_missing(self) -> None:
+        """Test that None is returned when no usage data is present."""
+        meta = {"other": "data", "custom": {"nested": {"value": 123}}}
+        usage_dict = MCPTool._extract_usage_dict(meta)
+        assert usage_dict is None
+
+    def test_extract_usage_dict_empty_meta(self) -> None:
+        """Test with empty meta dict."""
+        usage_dict = MCPTool._extract_usage_dict({})
+        assert usage_dict is None
+
+    def test_derive_usage_from_result_with_meta(self) -> None:
+        """Test _derive_usage_from_result with populated meta."""
+        meta = {
+            "usage": {
+                "prompt_tokens": 100,
+                "completion_tokens": 50,
+                "total_tokens": 150,
+                "total_price": "0.0015",
+                "currency": "USD",
+            }
+        }
+        result = CallToolResult(content=[], _meta=meta)
+        usage = MCPTool._derive_usage_from_result(result)
+
+        assert isinstance(usage, LLMUsage)
+        assert usage.prompt_tokens == 100
+        assert usage.completion_tokens == 50
+        assert usage.total_tokens == 150
+        assert usage.total_price == Decimal("0.0015")
+        assert usage.currency == "USD"
+
+    def test_derive_usage_from_result_without_meta(self) -> None:
+        """Test _derive_usage_from_result with no meta returns empty usage."""
+        result = CallToolResult(content=[], meta=None)
+        usage = MCPTool._derive_usage_from_result(result)
+
+        assert isinstance(usage, LLMUsage)
+        assert usage.total_tokens == 0
+        assert usage.prompt_tokens == 0
+        assert usage.completion_tokens == 0
+
+    def test_derive_usage_from_result_calculates_total_tokens(self) -> None:
+        """Test that total_tokens is calculated when missing."""
+        meta = {
+            "usage": {
+                "prompt_tokens": 100,
+                "completion_tokens": 50,
+                # total_tokens is missing
+            }
+        }
+        result = CallToolResult(content=[], _meta=meta)
+        usage = MCPTool._derive_usage_from_result(result)
+
+        assert usage.total_tokens == 150  # 100 + 50
+        assert usage.prompt_tokens == 100
+        assert usage.completion_tokens == 50
+
+    def test_invoke_sets_latest_usage_from_meta(self) -> None:
+        """Test that _invoke sets _latest_usage from result meta."""
+        tool = _make_mcp_tool()
+        meta = {
+            "usage": {
+                "prompt_tokens": 200,
+                "completion_tokens": 100,
+                "total_tokens": 300,
+                "total_price": "0.003",
+                "currency": "USD",
+            }
+        }
+        result = CallToolResult(content=[TextContent(type="text", text="test")], _meta=meta)
+
+        with patch.object(tool, "invoke_remote_mcp_tool", return_value=result):
+            list(tool._invoke(user_id="test_user", tool_parameters={}))
+
+        # Verify latest_usage was set correctly
+        assert tool.latest_usage.prompt_tokens == 200
+        assert tool.latest_usage.completion_tokens == 100
+        assert tool.latest_usage.total_tokens == 300
+        assert tool.latest_usage.total_price == Decimal("0.003")
+
+    def test_invoke_with_no_meta_returns_empty_usage(self) -> None:
+        """Test that _invoke returns empty usage when no meta is present."""
+        tool = _make_mcp_tool()
+        result = CallToolResult(content=[TextContent(type="text", text="test")], _meta=None)
+
+        with patch.object(tool, "invoke_remote_mcp_tool", return_value=result):
+            list(tool._invoke(user_id="test_user", tool_parameters={}))
+
+        # Verify latest_usage is empty
+        assert tool.latest_usage.total_tokens == 0
+        assert tool.latest_usage.prompt_tokens == 0
+        assert tool.latest_usage.completion_tokens == 0
+
+    def test_latest_usage_property_returns_llm_usage(self) -> None:
+        """Test that latest_usage property returns LLMUsage instance."""
+        tool = _make_mcp_tool()
+        assert isinstance(tool.latest_usage, LLMUsage)
+
+    def test_initial_usage_is_empty(self) -> None:
+        """Test that MCPTool is initialized with empty usage."""
+        tool = _make_mcp_tool()
+        assert tool.latest_usage.total_tokens == 0
+        assert tool.latest_usage.prompt_tokens == 0
+        assert tool.latest_usage.completion_tokens == 0
+        assert tool.latest_usage.total_price == Decimal(0)
+
+    @pytest.mark.parametrize(
+        "meta_data",
+        [
+            # Direct usage field
+            {"usage": {"prompt_tokens": 10, "completion_tokens": 5, "total_tokens": 15}},
+            # Nested metadata
+            {"metadata": {"usage": {"total_tokens": 100}}},
+            # Flat token fields
+            {"total_tokens": 50, "prompt_tokens": 30, "completion_tokens": 20},
+            # With price info
+            {
+                "usage": {
+                    "total_tokens": 150,
+                    "total_price": "0.002",
+                    "currency": "EUR",
+                }
+            },
+            # Deep nested
+            {"level1": {"level2": {"usage": {"total_tokens": 200}}}},
+        ],
+    )
+    def test_various_meta_formats(self, meta_data) -> None:
+        """Test that various meta formats are correctly parsed."""
+        result = CallToolResult(content=[], _meta=meta_data)
+        usage = MCPTool._derive_usage_from_result(result)
+
+        assert isinstance(usage, LLMUsage)
+        # Should have at least some usage data
+        if meta_data.get("usage", {}).get("total_tokens") or meta_data.get("total_tokens"):
+            expected_total = (
+                meta_data.get("usage", {}).get("total_tokens")
+                or meta_data.get("total_tokens")
+                or meta_data.get("metadata", {}).get("usage", {}).get("total_tokens")
+                or meta_data.get("level1", {}).get("level2", {}).get("usage", {}).get("total_tokens")
+            )
+            if expected_total:
+                assert usage.total_tokens == expected_total
diff --git a/api/uv.lock b/api/uv.lock
index 2fd670fdff..0a746e7df1 100644
--- a/api/uv.lock
+++ b/api/uv.lock
@@ -1783,7 +1783,7 @@ requires-dist = [
     { name = "starlette", specifier = "==0.49.1" },
     { name = "tiktoken", specifier = "~=0.9.0" },
     { name = "transformers", specifier = "~=4.56.1" },
-    { name = "unstructured", extras = ["docx", "epub", "md", "ppt", "pptx"], specifier = "~=0.16.1" },
+    { name = "unstructured", extras = ["docx", "epub", "md", "ppt", "pptx"], specifier = "~=0.18.18" },
     { name = "weave", specifier = ">=0.52.16" },
     { name = "weaviate-client", specifier = "==4.17.0" },
     { name = "webvtt-py", specifier = "~=0.5.1" },
@@ -7085,12 +7085,12 @@ wheels = [
 
 [[package]]
 name = "unstructured"
-version = "0.16.25"
+version = "0.18.31"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "backoff" },
     { name = "beautifulsoup4" },
-    { name = "chardet" },
+    { name = "charset-normalizer" },
     { name = "dataclasses-json" },
     { name = "emoji" },
     { name = "filetype" },
@@ -7098,6 +7098,7 @@ dependencies = [
     { name = "langdetect" },
     { name = "lxml" },
     { name = "nltk" },
+    { name = "numba" },
     { name = "numpy" },
     { name = "psutil" },
     { name = "python-iso639" },
@@ -7110,9 +7111,9 @@ dependencies = [
     { name = "unstructured-client" },
     { name = "wrapt" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/64/31/98c4c78e305d1294888adf87fd5ee30577a4c393951341ca32b43f167f1e/unstructured-0.16.25.tar.gz", hash = "sha256:73b9b0f51dbb687af572ecdb849a6811710b9cac797ddeab8ee80fa07d8aa5e6", size = 1683097, upload-time = "2025-03-07T11:19:39.507Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/a9/5f/64285bd69a538bc28753f1423fcaa9d64cd79a9e7c097171b1f0d27e9cdb/unstructured-0.18.31.tar.gz", hash = "sha256:af4bbe32d1894ae6e755f0da6fc0dd307a1d0adeebe0e7cc6278f6cf744339ca", size = 1707700, upload-time = "2026-01-27T15:33:05.378Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/12/4f/ad08585b5c8a33c82ea119494c4d3023f4796958c56e668b15cc282ec0a0/unstructured-0.16.25-py3-none-any.whl", hash = "sha256:14719ccef2830216cf1c5bf654f75e2bf07b17ca5dcee9da5ac74618130fd337", size = 1769286, upload-time = "2025-03-07T11:19:37.299Z" },
+    { url = "https://files.pythonhosted.org/packages/c8/4a/9c43f39d9e443c9bc3f2e379b305bca27110adc653b071221b3132c18de5/unstructured-0.18.31-py3-none-any.whl", hash = "sha256:fab4641176cb9b192ed38048758aa0d9843121d03626d18f42275afb31e5b2d3", size = 1794889, upload-time = "2026-01-27T15:33:03.136Z" },
 ]
 
 [package.optional-dependencies]
diff --git a/web/app/components/header/account-setting/model-provider-page/hooks.ts b/web/app/components/header/account-setting/model-provider-page/hooks.ts
index 6aba41d4e4..8db964cc27 100644
--- a/web/app/components/header/account-setting/model-provider-page/hooks.ts
+++ b/web/app/components/header/account-setting/model-provider-page/hooks.ts
@@ -308,7 +308,7 @@ export const useMarketplaceAllPlugins = (providers: ModelProvider[], searchText:
   }, [plugins, collectionPlugins, exclude])
 
   return {
-    plugins: allPlugins,
+    plugins: searchText ? plugins : allPlugins,
     isLoading: isCollectionLoading || isPluginsLoading,
   }
 }
diff --git a/web/app/components/workflow/skill/editor/skill-editor/plugins/file-picker-panel.tsx b/web/app/components/workflow/skill/editor/skill-editor/plugins/file-picker-panel.tsx
index 39692fff98..c57dbb02bf 100644
--- a/web/app/components/workflow/skill/editor/skill-editor/plugins/file-picker-panel.tsx
+++ b/web/app/components/workflow/skill/editor/skill-editor/plugins/file-picker-panel.tsx
@@ -1,7 +1,7 @@
 import type { NodeRendererProps } from 'react-arborist'
 import type { FileAppearanceType } from '@/app/components/base/file-uploader/types'
 import type { TreeNodeData } from '@/app/components/workflow/skill/type'
-import { RiArrowDownSLine, RiArrowRightSLine, RiFolderLine, RiFolderOpenLine, RiQuestionLine } from '@remixicon/react'
+import { RiArrowDownSLine, RiArrowRightSLine, RiFolderLine, RiFolderOpenLine } from '@remixicon/react'
 import { useSize } from 'ahooks'
 import * as React from 'react'
 import { useCallback, useMemo, useRef } from 'react'
@@ -52,7 +52,7 @@ const FilePickerTreeNode = ({ node, style, dragHandle, onSelectNode }: FilePicke
       aria-selected={isSelected}
       aria-expanded={isFolder ? node.isOpen : undefined}
       className={cn(
-        'group relative flex h-6 cursor-pointer items-center gap-px overflow-hidden rounded-md',
+        'group relative flex h-6 cursor-pointer items-center gap-0 overflow-hidden rounded-md',
         'hover:bg-state-base-hover',
         'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-inset focus-visible:ring-components-input-border-active',
         isSelected && 'bg-state-base-active',
@@ -82,6 +82,12 @@ const FilePickerTreeNode = ({ node, style, dragHandle, onSelectNode }: FilePicke
           {node.data.name}
         </span>
       </div>
+      {isFolder && (
+        <span
+          aria-hidden="true"
+          className="h-full w-px shrink-0 bg-transparent group-hover:bg-components-panel-bg"
+        />
+      )}
       {isFolder && (
         <button
           type="button"
@@ -89,8 +95,10 @@ const FilePickerTreeNode = ({ node, style, dragHandle, onSelectNode }: FilePicke
           onClick={handleToggle}
           aria-label={t('skillSidebar.toggleFolder')}
           className={cn(
-            'flex size-6 shrink-0 items-center justify-center rounded-md',
-            'text-text-tertiary hover:bg-state-base-hover-alt',
+            'flex size-6 shrink-0 items-center justify-center rounded-r-md',
+            'bg-transparent text-text-tertiary',
+            'group-hover:bg-state-base-hover-subtle',
+            'hover:bg-state-base-hover-subtle',
             'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-inset focus-visible:ring-components-input-border-active',
           )}
         >
@@ -162,7 +170,6 @@ const FilePickerPanel = ({
           <span className="flex-1 text-[12px] font-medium uppercase leading-4 text-text-tertiary">
             {t('skillEditor.referenceFiles')}
           </span>
-          <RiQuestionLine className="size-4 text-text-tertiary" aria-hidden="true" />
         </div>
       )}
       <div