codeant-ai-for-open-source[bot] commented on code in PR #39922:
URL: https://github.com/apache/superset/pull/39922#discussion_r3488663446


##########
superset/mcp_service/chart/plugins/xy.py:
##########
@@ -0,0 +1,199 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""XY chart type plugin (line, bar, area, scatter)."""
+
+from __future__ import annotations
+
+import logging
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _xy_chart_context,
+    _xy_chart_what,
+    map_xy_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, XYChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.chart.validation.runtime.cardinality_validator 
import (
+    CardinalityValidator,
+)
+from superset.mcp_service.chart.validation.runtime.format_validator import (
+    FormatTypeValidator,
+)
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+logger = logging.getLogger(__name__)

Review Comment:
   **Suggestion:** Add a type annotation to the module-level logger variable to 
satisfy the rule requiring type hints on annotatable variables. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   The module-level logger is a newly introduced variable that can be type 
annotated, but it is declared without a hint. This is a valid instance of the 
type-hint requirement.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=95533e707a4a4b0b8b5e3563335a40e3&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=95533e707a4a4b0b8b5e3563335a40e3&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/xy.py
   **Line:** 42:42
   **Comment:**
        *Custom Rule: Add a type annotation to the module-level logger variable 
to satisfy the rule requiring type hints on annotatable variables.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=6068935347575e270a17364967e3b409997d2287ce10452021cf0ea99ba9c288&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=6068935347575e270a17364967e3b409997d2287ce10452021cf0ea99ba9c288&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/xy.py:
##########
@@ -0,0 +1,199 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""XY chart type plugin (line, bar, area, scatter)."""
+
+from __future__ import annotations
+
+import logging
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _xy_chart_context,
+    _xy_chart_what,
+    map_xy_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, XYChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.chart.validation.runtime.cardinality_validator 
import (
+    CardinalityValidator,
+)
+from superset.mcp_service.chart.validation.runtime.format_validator import (
+    FormatTypeValidator,
+)
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+logger = logging.getLogger(__name__)
+
+
+class XYChartPlugin(BaseChartPlugin):
+    """Plugin for xy chart type (line, bar, area, scatter)."""
+
+    chart_type = "xy"
+    display_name = "Line / Bar / Area / Scatter Chart"

Review Comment:
   **Suggestion:** Add explicit type annotations to the class-level metadata 
fields so these new variables comply with the type-hint requirement. 
[custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   These are new class-level metadata variables that can be annotated, but they 
are declared without type hints. That matches the rule requiring type hints on 
annotatable variables.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=280f8934e53c41efb736a2353055d4ac&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=280f8934e53c41efb736a2353055d4ac&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/xy.py
   **Line:** 48:49
   **Comment:**
        *Custom Rule: Add explicit type annotations to the class-level metadata 
fields so these new variables comply with the type-hint requirement.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=f8962d0ddbed73342d081ac80d2d0b90c64d75f115ea46ac518d5fd3ba163eb3&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=f8962d0ddbed73342d081ac80d2d0b90c64d75f115ea46ac518d5fd3ba163eb3&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/registry.py:
##########
@@ -0,0 +1,279 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""
+ChartTypeRegistry — central registry mapping chart_type strings to plugins.
+
+Replaces the four previously-scattered dispatch locations:
+  - schema_validator.py: chart_type_validators dict
+  - dataset_validator.py: isinstance branches in _extract_column_references()
+  - chart_utils.py: if/elif chain in map_config_to_form_data()
+  - dataset_validator.py: isinstance branches in normalize_column_names()
+
+Usage::
+
+    from superset.mcp_service.chart.registry import get_registry
+
+    plugin = get_registry().get("xy")
+    if plugin is None:
+        raise ValueError("Unknown chart type: xy")
+    form_data = plugin.to_form_data(config, dataset_id)
+"""
+
+from __future__ import annotations
+
+import logging
+import sys
+import threading
+from collections.abc import Callable, Iterable
+from dataclasses import dataclass, field
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from superset.mcp_service.chart.plugin import ChartTypePlugin
+
+logger = logging.getLogger(__name__)
+
+_REGISTRY: dict[str, "ChartTypePlugin"] = {}
+_plugins_loaded = False

Review Comment:
   **Suggestion:** Add an explicit type annotation for the module-level 
`_plugins_loaded` state flag to satisfy the type-hint requirement for relevant 
variables. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   The rule requires type hints for relevant variables that can be annotated. 
This module-level boolean state flag is declared without an explicit type 
annotation, so the suggestion identifies a real violation.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=4a1e8baf4ea94b39ae2ba998e65a2fba&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=4a1e8baf4ea94b39ae2ba998e65a2fba&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/registry.py
   **Line:** 52:52
   **Comment:**
        *Custom Rule: Add an explicit type annotation for the module-level 
`_plugins_loaded` state flag to satisfy the type-hint requirement for relevant 
variables.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=8f4966dc3c3f569b645379edf39a84c267aa0f5dbb09ec5c31e005dc6bda8355&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=8f4966dc3c3f569b645379edf39a84c267aa0f5dbb09ec5c31e005dc6bda8355&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/registry.py:
##########
@@ -0,0 +1,279 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""
+ChartTypeRegistry — central registry mapping chart_type strings to plugins.
+
+Replaces the four previously-scattered dispatch locations:
+  - schema_validator.py: chart_type_validators dict
+  - dataset_validator.py: isinstance branches in _extract_column_references()
+  - chart_utils.py: if/elif chain in map_config_to_form_data()
+  - dataset_validator.py: isinstance branches in normalize_column_names()
+
+Usage::
+
+    from superset.mcp_service.chart.registry import get_registry
+
+    plugin = get_registry().get("xy")
+    if plugin is None:
+        raise ValueError("Unknown chart type: xy")
+    form_data = plugin.to_form_data(config, dataset_id)
+"""
+
+from __future__ import annotations
+
+import logging
+import sys
+import threading
+from collections.abc import Callable, Iterable
+from dataclasses import dataclass, field
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from superset.mcp_service.chart.plugin import ChartTypePlugin
+
+logger = logging.getLogger(__name__)
+
+_REGISTRY: dict[str, "ChartTypePlugin"] = {}
+_plugins_loaded = False
+_plugins_load_failed = False

Review Comment:
   **Suggestion:** Add an explicit type annotation for the module-level 
`_plugins_load_failed` state flag to comply with the required type hints for 
annotatable variables. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This is another module-level boolean variable that can be annotated but is 
currently assigned without a type hint, which violates the Python type-hint 
requirement.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=71273aad2b924cd6a67f44b86875ff5f&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=71273aad2b924cd6a67f44b86875ff5f&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/registry.py
   **Line:** 53:53
   **Comment:**
        *Custom Rule: Add an explicit type annotation for the module-level 
`_plugins_load_failed` state flag to comply with the required type hints for 
annotatable variables.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=3422d0914cfc85460aa33940b8ae24e2e0a9d25003d529a48b66156ef552de7b&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=3422d0914cfc85460aa33940b8ae24e2e0a9d25003d529a48b66156ef552de7b&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/schemas.py:
##########
@@ -68,6 +69,8 @@
     sanitize_user_input_with_changes,
 )
 
+logger = logging.getLogger(__name__)

Review Comment:
   **Suggestion:** Add an explicit type annotation for the module-level logger 
variable to satisfy the type-hint requirement for relevant variables. 
[custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   The rule requires type hints on relevant variables that can be annotated. 
This new module-level variable is untyped, and it can be annotated (for 
example, as a Logger), so the suggestion correctly identifies a real violation.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=6045b72b5ef744ecbfa72ce12a7ccfce&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=6045b72b5ef744ecbfa72ce12a7ccfce&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/schemas.py
   **Line:** 72:72
   **Comment:**
        *Custom Rule: Add an explicit type annotation for the module-level 
logger variable to satisfy the type-hint requirement for relevant variables.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=fd069c291545496837da2eec244c450daadf2519976c8c7e4d685d004a035a52&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=fd069c291545496837da2eec244c450daadf2519976c8c7e4d685d004a035a52&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/registry.py:
##########
@@ -0,0 +1,279 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""
+ChartTypeRegistry — central registry mapping chart_type strings to plugins.
+
+Replaces the four previously-scattered dispatch locations:
+  - schema_validator.py: chart_type_validators dict
+  - dataset_validator.py: isinstance branches in _extract_column_references()
+  - chart_utils.py: if/elif chain in map_config_to_form_data()
+  - dataset_validator.py: isinstance branches in normalize_column_names()
+
+Usage::
+
+    from superset.mcp_service.chart.registry import get_registry
+
+    plugin = get_registry().get("xy")
+    if plugin is None:
+        raise ValueError("Unknown chart type: xy")
+    form_data = plugin.to_form_data(config, dataset_id)
+"""
+
+from __future__ import annotations
+
+import logging
+import sys
+import threading
+from collections.abc import Callable, Iterable
+from dataclasses import dataclass, field
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from superset.mcp_service.chart.plugin import ChartTypePlugin
+
+logger = logging.getLogger(__name__)
+
+_REGISTRY: dict[str, "ChartTypePlugin"] = {}
+_plugins_loaded = False
+_plugins_load_failed = False
+_plugins_lock = threading.RLock()

Review Comment:
   **Suggestion:** Add a concrete type annotation to the module-level 
`_plugins_lock` variable so this shared synchronization object is explicitly 
typed. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   The synchronization primitive is a module-level variable that can be type 
annotated, but it is defined without an explicit hint. That matches the stated 
type-hint rule violation.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=1404b180286e4ec6ac689b3109a5bd01&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=1404b180286e4ec6ac689b3109a5bd01&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/registry.py
   **Line:** 54:54
   **Comment:**
        *Custom Rule: Add a concrete type annotation to the module-level 
`_plugins_lock` variable so this shared synchronization object is explicitly 
typed.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=e66c179eb44eedd2427e5743077f54c334fabdc576461a6d58ee6f5b0dedbf63&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=e66c179eb44eedd2427e5743077f54c334fabdc576461a6d58ee6f5b0dedbf63&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/schemas.py:
##########
@@ -561,11 +572,27 @@ def serialize_chart_object(chart: ChartLike | None) -> 
ChartInfo | None:
     # Extract structured filter information
     filters_info = extract_filters_from_form_data(chart_form_data)
 
+    _viz_type = getattr(chart, "viz_type", None)
+    _display_name = None

Review Comment:
   **Suggestion:** Annotate the newly introduced local variable with its 
expected optional string type instead of leaving it untyped. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This new local variable is introduced without a type hint even though its 
value is clearly intended to be an optional string. That fits the custom rule 
requiring type hints for relevant variables that can be annotated.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=a9c36320fbac49f3808ff01ae5eac1c3&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=a9c36320fbac49f3808ff01ae5eac1c3&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/schemas.py
   **Line:** 576:576
   **Comment:**
        *Custom Rule: Annotate the newly introduced local variable with its 
expected optional string type instead of leaving it untyped.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=1c41be09a108e45bd4e906191baf80a2861203d7f8e322d044fd905f563bbea1&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=1c41be09a108e45bd4e906191baf80a2861203d7f8e322d044fd905f563bbea1&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/mixed_timeseries.py:
##########
@@ -0,0 +1,173 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Mixed timeseries chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _mixed_timeseries_what,
+    _summarize_filters,
+    map_mixed_timeseries_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, 
MixedTimeseriesChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class MixedTimeseriesChartPlugin(BaseChartPlugin):
+    """Plugin for mixed_timeseries chart type."""
+

Review Comment:
   **Suggestion:** Add an explicit class-variable type annotation for 
`chart_type` to satisfy the type-hint requirement for relevant variables. 
[custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   The file adds a new class attribute without an explicit type annotation. 
Since `chart_type` is a class-level variable that can be annotated, this 
matches the Python type-hint requirement.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=585eef316e16459892893d550957b75f&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=585eef316e16459892893d550957b75f&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/mixed_timeseries.py
   **Line:** 38:38
   **Comment:**
        *Custom Rule: Add an explicit class-variable type annotation for 
`chart_type` to satisfy the type-hint requirement for relevant variables.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=a9f1940ecfd82e0ff637fff9ae29f24e2fabe0d3cb76eaf821e5d1727be530c6&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=a9f1940ecfd82e0ff637fff9ae29f24e2fabe0d3cb76eaf821e5d1727be530c6&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/handlebars.py:
##########
@@ -0,0 +1,194 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Handlebars chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _handlebars_chart_what,
+    _summarize_filters,
+    map_handlebars_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, HandlebarsChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class HandlebarsChartPlugin(BaseChartPlugin):
+    """Plugin for handlebars chart type (custom HTML template charts)."""
+
+    chart_type = "handlebars"
+    display_name = "Handlebars (Custom Template)"

Review Comment:
   **Suggestion:** Add explicit type annotations to these class-level variables 
(for example using `ClassVar[str]`) to satisfy the type-hint requirement for 
annotatable variables. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   These class attributes are new Python variables that can be annotated with 
`str` or `ClassVar[str]`, but they are currently untyped. That matches the 
custom rule requiring type hints on annotatable variables in modified Python 
code.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=aedbae8ef4ba40fa9675700a7ab295a8&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=aedbae8ef4ba40fa9675700a7ab295a8&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/handlebars.py
   **Line:** 39:40
   **Comment:**
        *Custom Rule: Add explicit type annotations to these class-level 
variables (for example using `ClassVar[str]`) to satisfy the type-hint 
requirement for annotatable variables.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=f46d94d0d08242b0cd394228294f413f0280481c49284ad7349ee399fd30831a&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=f46d94d0d08242b0cd394228294f413f0280481c49284ad7349ee399fd30831a&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/mixed_timeseries.py:
##########
@@ -0,0 +1,173 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Mixed timeseries chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _mixed_timeseries_what,
+    _summarize_filters,
+    map_mixed_timeseries_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, 
MixedTimeseriesChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class MixedTimeseriesChartPlugin(BaseChartPlugin):
+    """Plugin for mixed_timeseries chart type."""
+
+    chart_type = "mixed_timeseries"
+    display_name = "Mixed Timeseries"
+    native_viz_types: ClassVar[Mapping[str, str]] = {
+        "mixed_timeseries": "Mixed Timeseries Chart",
+    }
+
+    def pre_validate(
+        self,
+        config: dict[str, Any],
+    ) -> ChartGenerationError | None:
+        missing_fields = []

Review Comment:
   **Suggestion:** Add a concrete local variable annotation for 
`missing_fields` to indicate it is a list of strings. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This local variable is newly introduced and clearly has the type 
`list[str]`, but it is left unannotated. That is a direct violation of the 
type-hint rule.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=dc12019217634df78a42d75a7cf75da5&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=dc12019217634df78a42d75a7cf75da5&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/mixed_timeseries.py
   **Line:** 49:49
   **Comment:**
        *Custom Rule: Add a concrete local variable annotation for 
`missing_fields` to indicate it is a list of strings.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=afe401deeb8320832fead72b3a7672d357fe79fc1586f39618fb88bdaa613c66&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=afe401deeb8320832fead72b3a7672d357fe79fc1586f39618fb88bdaa613c66&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/mixed_timeseries.py:
##########
@@ -0,0 +1,173 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Mixed timeseries chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _mixed_timeseries_what,
+    _summarize_filters,
+    map_mixed_timeseries_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, 
MixedTimeseriesChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class MixedTimeseriesChartPlugin(BaseChartPlugin):
+    """Plugin for mixed_timeseries chart type."""
+
+    chart_type = "mixed_timeseries"

Review Comment:
   **Suggestion:** Add an explicit class-variable type annotation for 
`display_name` so this new class attribute is fully type hinted. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   `display_name` is a new class-level string attribute and is unannotated. 
This is a type-hint omission on a relevant variable that can be annotated, so 
the suggestion is valid.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=18bd9c838c634b259ad536b5facabf5d&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=18bd9c838c634b259ad536b5facabf5d&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/mixed_timeseries.py
   **Line:** 39:39
   **Comment:**
        *Custom Rule: Add an explicit class-variable type annotation for 
`display_name` so this new class attribute is fully type hinted.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=f915c33266537cfd3515e841e839c4ca8097e863cc75a6c6293873ef8fc3b4a7&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=f915c33266537cfd3515e841e839c4ca8097e863cc75a6c6293873ef8fc3b4a7&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/pie.py:
##########
@@ -0,0 +1,140 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Pie chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _pie_chart_what,
+    _summarize_filters,
+    map_pie_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, PieChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class PieChartPlugin(BaseChartPlugin):
+    """Plugin for pie chart type."""
+
+    chart_type = "pie"
+    display_name = "Pie / Donut Chart"

Review Comment:
   **Suggestion:** Add explicit type annotations to the new class-level 
attributes so these plugin metadata fields are fully typed. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This new Python file introduces class-level attributes without type 
annotations. The custom rule requires type hints on relevant variables that can 
be annotated, so these untyped metadata fields are a real violation.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=b2f257117580451e8d6a923697e7782a&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=b2f257117580451e8d6a923697e7782a&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/pie.py
   **Line:** 39:40
   **Comment:**
        *Custom Rule: Add explicit type annotations to the new class-level 
attributes so these plugin metadata fields are fully typed.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=84bedc410711c7ae0afc530d3e6ef7f66ec12552560773eb16d5c99359e0cd3d&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=84bedc410711c7ae0afc530d3e6ef7f66ec12552560773eb16d5c99359e0cd3d&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/pie.py:
##########
@@ -0,0 +1,140 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Pie chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _pie_chart_what,
+    _summarize_filters,
+    map_pie_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, PieChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class PieChartPlugin(BaseChartPlugin):
+    """Plugin for pie chart type."""
+
+    chart_type = "pie"
+    display_name = "Pie / Donut Chart"
+    native_viz_types: ClassVar[Mapping[str, str]] = {
+        "pie": "Pie Chart",
+    }
+
+    def pre_validate(
+        self,
+        config: dict[str, Any],
+    ) -> ChartGenerationError | None:
+        missing_fields = []

Review Comment:
   **Suggestion:** Annotate this local collection variable with its concrete 
element type to satisfy the type-hint requirement for relevant variables. 
[custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This local list is newly introduced in Python code and can be explicitly 
annotated. Since the rule flags omitted type hints for relevant variables that 
can be annotated, this is a valid violation.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=ca60948fcb514c61897a38de7c2c0a6b&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=ca60948fcb514c61897a38de7c2c0a6b&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/pie.py
   **Line:** 49:49
   **Comment:**
        *Custom Rule: Annotate this local collection variable with its concrete 
element type to satisfy the type-hint requirement for relevant variables.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=9ec6cf893715c26e716d3ca367f65171d9c16b0c4d7c78869388d811f921dd6d&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=9ec6cf893715c26e716d3ca367f65171d9c16b0c4d7c78869388d811f921dd6d&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/pivot_table.py:
##########
@@ -0,0 +1,164 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Pivot table chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _pivot_table_what,
+    _summarize_filters,
+    map_pivot_table_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, PivotTableChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class PivotTableChartPlugin(BaseChartPlugin):
+    """Plugin for pivot_table chart type."""
+
+    chart_type = "pivot_table"
+    display_name = "Pivot Table"
+    native_viz_types: ClassVar[Mapping[str, str]] = {
+        "pivot_table_v2": "Pivot Table",
+    }
+
+    def pre_validate(
+        self,
+        config: dict[str, Any],
+    ) -> ChartGenerationError | None:
+        missing_fields = []

Review Comment:
   **Suggestion:** Add a concrete list type annotation to this local variable 
to avoid leaving an inferable but untyped mutable value. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This local mutable list is initialized without a type annotation even though 
its intended element type is clear from usage. The custom rule covers relevant 
variables that can be annotated, so this is a valid violation.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=6a67a404214c413e80d393fc22c21895&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=6a67a404214c413e80d393fc22c21895&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/pivot_table.py
   **Line:** 49:49
   **Comment:**
        *Custom Rule: Add a concrete list type annotation to this local 
variable to avoid leaving an inferable but untyped mutable value.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=2ffd39556920417d98ec61340ebd58a2862f272d82b72d6e65a7e14320c7c583&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=2ffd39556920417d98ec61340ebd58a2862f272d82b72d6e65a7e14320c7c583&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/pivot_table.py:
##########
@@ -0,0 +1,164 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Pivot table chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _pivot_table_what,
+    _summarize_filters,
+    map_pivot_table_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, PivotTableChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class PivotTableChartPlugin(BaseChartPlugin):
+    """Plugin for pivot_table chart type."""
+
+    chart_type = "pivot_table"

Review Comment:
   **Suggestion:** Add an explicit type annotation to this class-level constant 
to satisfy the type-hint requirement for relevant variables. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This new class attribute is a statically inferable constant and is 
unannotated. The custom rule requires type hints for relevant variables that 
can be annotated, so this is a real violation.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=07fb83f1f85743fb81a467761976b92a&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=07fb83f1f85743fb81a467761976b92a&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/pivot_table.py
   **Line:** 39:39
   **Comment:**
        *Custom Rule: Add an explicit type annotation to this class-level 
constant to satisfy the type-hint requirement for relevant variables.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=6ef6c858ddc281cc08de9deba644fd2f661926b860885059fc402f1ec0d7809c&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=6ef6c858ddc281cc08de9deba644fd2f661926b860885059fc402f1ec0d7809c&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/pivot_table.py:
##########
@@ -0,0 +1,164 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Pivot table chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _pivot_table_what,
+    _summarize_filters,
+    map_pivot_table_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, PivotTableChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class PivotTableChartPlugin(BaseChartPlugin):
+    """Plugin for pivot_table chart type."""
+
+    chart_type = "pivot_table"
+    display_name = "Pivot Table"

Review Comment:
   **Suggestion:** Add an explicit type annotation to this class-level display 
label variable so it complies with the type-hint rule. [custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This class-level string attribute can be annotated but is left untyped. That 
matches the stated Python type-hint rule for relevant variables.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=e9264a77854047f8b0f3c8b6f41f8d12&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=e9264a77854047f8b0f3c8b6f41f8d12&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/pivot_table.py
   **Line:** 40:40
   **Comment:**
        *Custom Rule: Add an explicit type annotation to this class-level 
display label variable so it complies with the type-hint rule.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=8e9daf44275097082ffb947fe5b0a8b2081b1975bad799eff86243a4944066f0&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=8e9daf44275097082ffb947fe5b0a8b2081b1975bad799eff86243a4944066f0&reaction=dislike'>👎</a>



##########
superset/mcp_service/chart/plugins/table.py:
##########
@@ -0,0 +1,136 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Table chart type plugin."""
+
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any, ClassVar
+
+from superset.mcp_service.chart.chart_utils import (
+    _summarize_filters,
+    _table_chart_what,
+    map_table_config,
+)
+from superset.mcp_service.chart.plugin import BaseChartPlugin
+from superset.mcp_service.chart.schemas import ColumnRef, TableChartConfig
+from superset.mcp_service.chart.validation.dataset_validator import 
DatasetValidator
+from superset.mcp_service.common.error_schemas import ChartGenerationError
+
+
+class TableChartPlugin(BaseChartPlugin):
+    """Plugin for table chart type."""
+
+    chart_type = "table"

Review Comment:
   **Suggestion:** Add an explicit `ClassVar[str]` type annotation to this 
class attribute to satisfy the type-hint requirement for new Python code. 
[custom_rule]
   
   **Severity Level:** Minor ⚠️
   <details>
   <summary><b>Why it matters? 🤔 </b></summary>
   
   This new Python class attribute is unannotated even though it can be 
type-hinted. That matches the type-hint rule for new or modified Python code, 
so the suggestion identifies a real violation.
   </details>
   
   [![Fix in 
Cursor](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-cursor-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=60b6d0f3ceb54926944fd45e8e66b421&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
 [![Fix in VSCode 
Claude](https://new-codeant-butcket.s3.us-west-1.amazonaws.com/badges/fix-in-vscode-claude-flat.svg)](https://app.codeant.ai/fix-in-ide?tool=vscode-claude&prompt_id=60b6d0f3ceb54926944fd45e8e66b421&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
   
   *(Use Cmd/Ctrl + Click for best experience)*
   <details>
   <summary><b>Prompt for AI Agent 🤖 </b></summary>
   
   ```mdx
   This is a comment left during a code review.
   
   **Path:** superset/mcp_service/chart/plugins/table.py
   **Line:** 39:39
   **Comment:**
        *Custom Rule: Add an explicit `ClassVar[str]` type annotation to this 
class attribute to satisfy the type-hint requirement for new Python code.
   
   Validate the correctness of the flagged issue. If correct, How can I resolve 
this? If you propose a fix, implement it and please make it concise.
   Once fix is implemented, also check other comments on the same PR, and ask 
user if the user wants to fix the rest of the comments as well. if said yes, 
then fetch all the comments validate the correctness and implement a minimal fix
   ```
   </details>
   <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=853b13bfaa9bc65920e7a452a84bc48c277ec415d18b048dd07625c6fde43e67&reaction=like'>👍</a>
 | <a 
href='https://app.codeant.ai/feedback?pr_url=https%3A%2F%2Fgithub.com%2Fapache%2Fsuperset%2Fpull%2F39922&comment_hash=853b13bfaa9bc65920e7a452a84bc48c277ec415d18b048dd07625c6fde43e67&reaction=dislike'>👎</a>



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