[Lint]Add lint hooks for clang-format, shellcheck, forbidden imports, and boolean context manager checks (#7511)

### What this PR does / why we need it?
This PR introduces several upstream `vllm`-aligned lint hooks into
`vllm-ascend` and makes them part of the actual `pre-commit` flow.

Main changes in this PR:
- add `check-boolean-context-manager` to catch boolean expressions in
`with` statements
- add `check-forbidden-imports` to forbid direct `re` imports and
disallowed direct `triton` imports
- enable shell script linting through `tools/shellcheck.sh`
- add root `.clang-format` aligned with upstream `vllm`, enable
`clang-format` in `pre-commit`, temporarily **exclude all `csrc/**`**
from `clang-format` to avoid bringing a large native code reformat into
this PR

This PR focuses on landing the smaller and immediately useful lint
alignment first, without mixing in the larger requirements-management
migration.

### Does this PR introduce _any_ user-facing change?
No.

This PR only updates repository lint configuration, static checks, and
internal import/style enforcement. It does not change runtime behavior
or public interfaces.

### How was this patch tested?
Tested locally in the project virtual environment.

Commands used:
```bash
bash format.sh
```
Verified checks passed:
``` bash
ruff check...............................................................Passed
ruff format..............................................................Passed
codespell................................................................Passed
typos....................................................................Passed
clang-format.............................................................Passed
Lint GitHub Actions workflow files.......................................Passed
Lint shell scripts.......................................................Passed
Lint PNG exports from excalidraw.........................................Passed
Check for spaces in all filenames........................................Passed
Enforce __init__.py in Python packages...................................Passed
Check for forbidden imports..............................................Passed
Check for boolean ops in with-statements.................................Passed
Suggestion...............................................................Passed
- hook id: suggestion
- duration: 0s

To bypass pre-commit hooks, add --no-verify to git commit.
```
**note:**
clang-format is enabled but currently excludes all csrc/**


- vLLM version: v0.17.0
- vLLM main:
8b6325758c

---------

Signed-off-by: MrZ20 <2609716663@qq.com>

tools/check_boolean_context_manager.py

@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2026 Huawei Technologies Co., Ltd. All Rights Reserved.
+# Copyright 2023 The vLLM team.
+#
+# Licensed 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.
+# This file is a part of the vllm-ascend project.
+# Adapted from https://github.com/vllm-project/vllm/tree/main/tools
+#
+"""Lint: detect `with a() and b():` (boolean op in with-statement context).
+
+Using `and`/`or` to combine context managers is almost always a bug:
+
+    with ctx_a() and ctx_b():   # BUG: only ctx_b is entered
+    with ctx_a() or  ctx_b():   # BUG: only ctx_a is entered
+
+The correct way to combine context managers is:
+
+    with ctx_a(), ctx_b():          # comma-separated
+    with (ctx_a(), ctx_b()):        # parenthesized (Python 3.10+)
+    with contextlib.ExitStack() ... # ExitStack
+"""
+
+import ast
+import sys
+
+
+def check_file(filepath: str) -> list[str]:
+    try:
+        with open(filepath, encoding="utf-8") as f:
+            source = f.read()
+    except (OSError, UnicodeDecodeError):
+        return []
+
+    try:
+        tree = ast.parse(source, filename=filepath)
+    except SyntaxError:
+        return []
+
+    violations = []
+    for node in ast.walk(tree):
+        if isinstance(node, (ast.With, ast.AsyncWith)):
+            for item in node.items:
+                if isinstance(item.context_expr, ast.BoolOp):
+                    op = "and" if isinstance(item.context_expr.op, ast.And) else "or"
+                    violations.append(
+                        f"{filepath}:{item.context_expr.lineno}: "
+                        f"boolean `{op}` used to combine context managers "
+                        "in `with` statement; use a comma instead"
+                    )
+    return violations
+
+
+def main() -> int:
+    if len(sys.argv) < 2:
+        print("Usage: check_boolean_context_manager.py <file> ...", file=sys.stderr)
+        return 1
+
+    all_violations = []
+    for filepath in sys.argv[1:]:
+        all_violations.extend(check_file(filepath))
+
+    if all_violations:
+        print(
+            "Boolean operator used to combine context managers in a `with` "
+            "statement.\n"
+            "Use `with a(), b():` or `with (a(), b()):` instead.\n"
+        )
+        for violation in all_violations:
+            print(f"  {violation}")
+        return 1
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())