style: apply ruff lint fixes and formatting to figment modules

Fixes: unused imports, import sorting, unused variable, overly broad
exception type in test.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

effects_plugins/figment.py

@@ -53,7 +53,11 @@ class FigmentEffect(EffectPlugin):
         },
     )
 
-    def __init__(self, figment_dir: str | None = None, triggers: list[FigmentTrigger] | None = None):
+    def __init__(
+        self,
+        figment_dir: str | None = None,
+        triggers: list[FigmentTrigger] | None = None,
+    ):
         self.config = EffectConfig(
             enabled=False,
             intensity=1.0,
@@ -125,7 +129,9 @@ class FigmentEffect(EffectPlugin):
         self._phase = FigmentPhase.REVEAL
         self._progress = 0.0
 
-    def get_figment_state(self, frame_number: int, w: int, h: int) -> FigmentState | None:
+    def get_figment_state(
+        self, frame_number: int, w: int, h: int
+    ) -> FigmentState | None:
         """Tick the state machine and return current state, or None if idle."""
         if not self.config.enabled:
             return None
@@ -178,9 +184,13 @@ class FigmentEffect(EffectPlugin):
     def _handle_command(self, cmd: FigmentCommand, w: int, h: int) -> None:
         if cmd.action == FigmentAction.TRIGGER:
             self.trigger(w, h)
-        elif cmd.action == FigmentAction.SET_INTENSITY and isinstance(cmd.value, (int, float)):
+        elif cmd.action == FigmentAction.SET_INTENSITY and isinstance(
+            cmd.value, (int, float)
+        ):
             self.config.intensity = float(cmd.value)
-        elif cmd.action == FigmentAction.SET_INTERVAL and isinstance(cmd.value, (int, float)):
+        elif cmd.action == FigmentAction.SET_INTERVAL and isinstance(
+            cmd.value, (int, float)
+        ):
             self.config.params["interval_secs"] = float(cmd.value)
         elif cmd.action == FigmentAction.SET_COLOR and isinstance(cmd.value, str):
             if cmd.value in THEME_REGISTRY: