diff --git a/plugins/violin_guard/schemas.py b/plugins/violin_guard/schemas.py
index c53207f..88e5a3e 100644
--- a/plugins/violin_guard/schemas.py
+++ b/plugins/violin_guard/schemas.py
@@ -3,11 +3,11 @@
 from __future__ import annotations
 
 from typing import Any, Literal
+
 from pydantic import BaseModel, ConfigDict, Field
 
 from . import state
 
-
 # ---------------------------------------------------------------------------
 # Pydantic v2 Models
 # ---------------------------------------------------------------------------
@@ -77,9 +77,7 @@ class RecordHypothesisArgsModel(BaseModel):
             " no-results/unavailable outcomes are allowed."
         ),
     )
-    test_command: str = Field(
-        "", description="Exact syntax tested, including argument order"
-    )
+    test_command: str = Field("", description="Exact syntax tested, including argument order")
     test_response: str = Field("", description="Exact decisive response or error")
     verification_status: str = ""
     rejection_reason: str = Field(
@@ -112,8 +110,7 @@ class ExecArgsModel(BaseModel):
     background: bool = Field(
         False,
         description=(
-            "Run as a tracked background process; use status/cancel for lifecycle"
-            " management"
+            "Run as a tracked background process; use status/cancel for lifecycle management"
         ),
     )
 
@@ -297,9 +294,7 @@ class TargetArgsModel(BaseModel):
     eng_dir: str = Field(
         ..., description="engagement dir (required; target resolution is engagement-scoped)"
     )
-    scope: str = Field(
-        "", description="explicit scope.yaml path (else $ENG_DIR/scope/scope.yaml)"
-    )
+    scope: str = Field("", description="explicit scope.yaml path (else $ENG_DIR/scope/scope.yaml)")
     host: str = Field("", description="in-scope IP/CIDR to resolve")
     role: str = Field("", description="named role from scope.yaml targets.roles (e.g. web)")
     field: Literal["ip", "url", "host"] = Field("ip", description="what to print (default ip)")
diff --git a/plugins/violin_guard/targets.py b/plugins/violin_guard/targets.py
index 48228da..2cdf634 100644
--- a/plugins/violin_guard/targets.py
+++ b/plugins/violin_guard/targets.py
@@ -8,7 +8,6 @@ from __future__ import annotations
 
 import contextlib
 import re
-import shlex
 from dataclasses import dataclass, field
 from pathlib import Path
 from typing import Any
diff --git a/plugins/violin_guard/terminal_policy.py b/plugins/violin_guard/terminal_policy.py
index d25be27..6c3a851 100644
--- a/plugins/violin_guard/terminal_policy.py
+++ b/plugins/violin_guard/terminal_policy.py
@@ -198,9 +198,7 @@ def _has_target_literal_in_segment(seg: CommandSegment) -> bool:
     words = seg.words
     executable = seg.executable
     skip_code = (
-        executable in _SCRIPT_INTERPRETERS
-        and executable not in _SHELL_WRAPPERS
-        and "-c" in words
+        executable in _SCRIPT_INTERPRETERS and executable not in _SHELL_WRAPPERS and "-c" in words
     )
     c_index = words.index("-c") if skip_code else -1
     for index, word in enumerate(words):
@@ -252,11 +250,7 @@ def _is_local_compilation_or_test(seg: CommandSegment) -> bool:
             "doctest",
         }:
             return True
-    return (
-        "py_compile" in seg.raw_text
-        or "pytest" in lower_words
-        or "unittest" in lower_words
-    )
+    return "py_compile" in seg.raw_text or "pytest" in lower_words or "unittest" in lower_words
 
 
 def _block_terminal_segment(seg: CommandSegment) -> str | None:
diff --git a/tests/guard/test_bashlex_ast.py b/tests/guard/test_bashlex_ast.py
index 916f031..7de695b 100644
--- a/tests/guard/test_bashlex_ast.py
+++ b/tests/guard/test_bashlex_ast.py
@@ -1,7 +1,5 @@
 """Unit tests for bashlex AST parsing and terminal policy classification."""
 
-import pytest
-
 from plugins.violin_guard import bash_ast, terminal_policy