feat(theme): Add NERV visual effects (scanlines, flicker) in src/theme_nerv_fx.py

src/theme_nerv_fx.py

@@ -0,0 +1,20 @@
+import time
+import math
+from imgui_bundle import imgui
+
+class ScanlineOverlay:
+ def __init__(self):
+  self.enabled = True
+
+ def render(self, width: float, height: float):
+  if not self.enabled:
+   return
+  draw_list = imgui.get_foreground_draw_list()
+  color = imgui.get_color_u32((0.0, 0.0, 0.0, 0.06))
+  for y in range(0, int(height), 2):
+   draw_list.add_line((0.0, float(y)), (float(width), float(y)), color, 1.0)
+
+class StatusFlicker:
+ def get_alpha(self) -> float:
+  # Modulate between 0.7 and 1.0 using sin wave
+  return 0.85 + 0.15 * math.sin(time.time() * 20.0)