fix(hud): Correct overlay logic and context mismatch

engine/effects/plugins/hud.py

@@ -92,7 +92,7 @@ class HudEffect(EffectPlugin):
 
         for i, line in enumerate(hud_lines):
             if i < len(result):
-                result[i] = line + result[i][len(line) :]
+                result[i] = line
             else:
                 result.append(line)
 

engine/pipeline/adapters/effect_plugin.py

@@ -104,6 +104,11 @@ class EffectPluginStage(Stage):
         if "metrics" in ctx.state:
             effect_ctx.set_state("metrics", ctx.state["metrics"])
 
+        # Copy pipeline_order from PipelineContext services to EffectContext state
+        pipeline_order = ctx.get("pipeline_order")
+        if pipeline_order:
+            effect_ctx.set_state("pipeline_order", pipeline_order)
+
         # Apply sensor param bindings if effect has them
         if hasattr(self._effect, "param_bindings") and self._effect.param_bindings:
             bound_config = apply_param_bindings(self._effect, effect_ctx)