diff --git a/hermes_cli/npm_engine.py b/hermes_cli/npm_engine.py
index b87489e51f..5a5ea34e00 100644
--- a/hermes_cli/npm_engine.py
+++ b/hermes_cli/npm_engine.py
@@ -129,13 +129,7 @@ def _upgrade_env() -> dict[str, str]:
     return env
 
 
-def upgrade_managed_npm(
-    npm: str,
-    npm_range: str,
-    *,
-    prefix: Path,
-    quiet: bool = False,
-) -> bool:
+def upgrade_managed_npm(npm: str, npm_range: str, *, prefix: Path, quiet: bool = False) -> bool:
     """Upgrade the managed npm at *npm* in place to satisfy *npm_range*.
 
     ``--prefix`` targets the managed tree explicitly: a managed install writes ``prefix=~/.local``
@@ -235,12 +229,7 @@ def _provision_managed_npm(npm_range: str | None, *, quiet: bool = False) -> str
     return managed_npm
 
 
-def maybe_repair_npm_engine(
-    npm: str | None,
-    output: str,
-    *,
-    quiet: bool = False,
-) -> str | None:
+def maybe_repair_npm_engine(npm: str | None, output: str, *, quiet: bool = False) -> str | None:
     """Repair an ``EBADENGINE`` failure, never touching a foreign toolchain.
 
     Truthy exactly when the caller should retry once (with the returned npm path).
diff --git a/hermes_cli/oneshot.py b/hermes_cli/oneshot.py
index 987a30eef9..7265901129 100644
--- a/hermes_cli/oneshot.py
+++ b/hermes_cli/oneshot.py
@@ -452,7 +452,4 @@ def _oneshot_clarify_callback(question: str, choices=None, multi_select=False) -
             f"[oneshot mode: no user available. Pick the best {what} from "
             f"{choices} using your own judgment and continue.]"
         )
-    return (
-        "[oneshot mode: no user available. Make the most reasonable "
-        "assumption you can and continue.]"
-    )
+    return "[oneshot mode: no user available. Make the most reasonable assumption you can and continue.]"
diff --git a/hermes_cli/partial_compress.py b/hermes_cli/partial_compress.py
index 546fb0b9f3..a9f473c866 100644
--- a/hermes_cli/partial_compress.py
+++ b/hermes_cli/partial_compress.py
@@ -18,9 +18,7 @@ DEFAULT_KEEP_LAST = 2
 MAX_KEEP_LAST = 100
 
 
-def parse_partial_compress_args(
-    raw_args: str,
-) -> Tuple[bool, int, Optional[str]]:
+def parse_partial_compress_args(raw_args: str) -> Tuple[bool, int, Optional[str]]:
     """Parse the argument string after ``/compress`` into ``(partial, keep_last, focus_topic)``.
 
     ``here [N]`` / ``up to here [N]`` / ``--keep N`` / ``-k N`` / ``--keep=N`` select the
diff --git a/hermes_cli/pets.py b/hermes_cli/pets.py
index e5d10b3203..0dfe50b22e 100644
--- a/hermes_cli/pets.py
+++ b/hermes_cli/pets.py
@@ -278,9 +278,7 @@ def _update_pet_config(when_slug: str | None = None, **values) -> bool:
 
     cfg = load_config()
     pet = cfg.setdefault("display", {}).setdefault("pet", {})
-    if when_slug is not None and (
-        not isinstance(pet, dict) or str(pet.get("slug", "") or "") != when_slug
-    ):
+    if when_slug is not None and (not isinstance(pet, dict) or str(pet.get("slug", "") or "") != when_slug):
         return False
     pet.update(values)
     save_config(cfg)
diff --git a/hermes_cli/platform_actions.py b/hermes_cli/platform_actions.py
index 94daedc4cc..5cd1c36f90 100644
--- a/hermes_cli/platform_actions.py
+++ b/hermes_cli/platform_actions.py
@@ -177,18 +177,14 @@ class PlatformActions:
 
     # -- v1 verbs -----------------------------------------------------------
 
-    async def add_reaction(
-        self, platform: str, chat_id: str, message_id: str, emoji: str
-    ) -> Dict[str, Any]:
+    async def add_reaction(self, platform: str, chat_id: str, message_id: str, emoji: str) -> Dict[str, Any]:
         """Add/set an emoji reaction on a platform message."""
         return await self._run(
             "add_reaction", platform, chat_id, message_id, emoji,
             chat_id=chat_id, message_id=message_id, emoji=emoji,
         )
 
-    async def set_thread_title(
-        self, platform: str, chat_id: str, thread_id: str, title: str
-    ) -> Dict[str, Any]:
+    async def set_thread_title(self, platform: str, chat_id: str, thread_id: str, title: str) -> Dict[str, Any]:
         """Rename a thread / forum topic."""
         return await self._run(
             "set_thread_title", platform, chat_id, thread_id, title,