diff --git a/features/steps/acms_context_show_clear_steps.py b/features/steps/acms_context_show_clear_steps.py
index 71a7b19a0..b9ee251c7 100644
--- a/features/steps/acms_context_show_clear_steps.py
+++ b/features/steps/acms_context_show_clear_steps.py
@@ -316,6 +316,4 @@ def step_then_clear_json_key(context: Any, key: str) -> None:
 
 @then("the acms clear should require confirmation")
 def step_then_clear_needs_confirm(context: Any) -> None:
-    assert context.clear_needs_confirm is True, (
-        "Expected clear to require confirmation"
-    )
+    assert context.clear_needs_confirm is True, "Expected clear to require confirmation"
diff --git a/src/cleveragents/application/services/context_tiers.py b/src/cleveragents/application/services/context_tiers.py
index 6109a9477..866c03418 100644
--- a/src/cleveragents/application/services/context_tiers.py
+++ b/src/cleveragents/application/services/context_tiers.py
@@ -450,9 +450,7 @@ class ContextTierService(TierRuntimeMixin, ScopedTierMixin):
         with self._lock:
             for fid in fragment_ids:
                 before = (
-                    (fid in self._hot)
-                    or (fid in self._warm)
-                    or (fid in self._cold)
+                    (fid in self._hot) or (fid in self._warm) or (fid in self._cold)
                 )
                 if before:
                     self._remove_from_all(fid)
diff --git a/src/cleveragents/cli/commands/acms_context.py b/src/cleveragents/cli/commands/acms_context.py
index 82053a9c4..64caefa29 100644
--- a/src/cleveragents/cli/commands/acms_context.py
+++ b/src/cleveragents/cli/commands/acms_context.py
@@ -31,9 +31,7 @@ from cleveragents.application.services.context_tiers import ContextTierService
 from cleveragents.domain.models.acms.tiers import ContextTier, TieredFragment
 
 app = typer.Typer(
-    help=(
-        "ACMS context index: inspect assembled context and remove stale entries"
-    )
+    help=("ACMS context index: inspect assembled context and remove stale entries")
 )
 console = Console()
 err_console = Console(stderr=True)
@@ -246,9 +244,7 @@ def _apply_clear_filters(
             to_remove.append(frag)
 
     # Remove matched fragments
-    removed_count = tier_service.remove_by_filter(
-        [f.fragment_id for f in to_remove]
-    )
+    removed_count = tier_service.remove_by_filter([f.fragment_id for f in to_remove])
 
     # Count remaining
     if project_names:
@@ -324,8 +320,7 @@ def acms_show(
     """
     if view not in _VALID_VIEWS:
         err_console.print(
-            f"[red]Invalid view '{view}': must be one of "
-            f"{sorted(_VALID_VIEWS)}[/red]"
+            f"[red]Invalid view '{view}': must be one of {sorted(_VALID_VIEWS)}[/red]"
         )
         raise typer.Exit(1)
 
@@ -451,8 +446,7 @@ def acms_clear(
             ContextTier(tier_filter)
         except ValueError:
             err_console.print(
-                f"[red]Invalid tier '{tier_filter}': "
-                f"must be hot, warm, or cold[/red]"
+                f"[red]Invalid tier '{tier_filter}': must be hot, warm, or cold[/red]"
             )
             raise typer.Exit(1) from None
 
@@ -493,9 +487,7 @@ def acms_clear(
         if tier_filter:
             filter_parts.append(f"tier={tier_filter!r}")
         filter_desc = ", ".join(filter_parts)
-        confirmed = typer.confirm(
-            f"Remove ACMS entries matching {filter_desc}?"
-        )
+        confirmed = typer.confirm(f"Remove ACMS entries matching {filter_desc}?")
         if not confirmed:
             console.print("[yellow]Cancelled.[/yellow]")
             raise typer.Exit(0)