refactor(gui_2): merge shaders into gui_2; git rm src/shaders.py

Per spec FR1 + Phase 1.2: draw_soft_shadow moved into src/gui_2.py
as a region block; consumer sites changed from shaders.draw_soft_shadow()
to draw_soft_shadow(). Removed the local import workaround at line 7016.

src/gui_2.py

@@ -6044,7 +6044,7 @@ def render_patch_modal(app: App) -> None:
   if opened:
    p_min = imgui.get_window_pos()
    p_max = imgui.ImVec2(p_min.x + imgui.get_window_size().x, p_min.y + imgui.get_window_size().y)
-   shaders.draw_soft_shadow(imgui.get_background_draw_list(), p_min, p_max, imgui.ImVec4(0, 0, 0, 0.6), 25.0, 6.0)
+   draw_soft_shadow(imgui.get_background_draw_list(), p_min, p_max, imgui.ImVec4(0, 0, 0, 0.6), 25.0, 6.0)
    
    imgui.text_colored(theme.get_color("status_warning"), "Tier 4 QA Generated a Patch")
    imgui.separator()
@@ -7013,11 +7013,9 @@ def render_track_proposal_modal(app: App) -> None:
  if app._show_track_proposal_modal:
   imgui.open_popup("Track Proposal")
  if imgui.begin_popup_modal("Track Proposal", True, imgui.WindowFlags_.always_auto_resize)[0]:
-  from src import shaders #TODO(Ed): Review local import
   p_min = imgui.get_window_pos()
   p_max = imgui.ImVec2(p_min.x + imgui.get_window_size().x, p_min.y + imgui.get_window_size().y)
-  # Render soft shadow behind the modal
+  draw_soft_shadow(imgui.get_background_draw_list(), p_min, p_max, imgui.ImVec4(0, 0, 0, 0.6), 25.0, 6.0)
-  shaders.draw_soft_shadow(imgui.get_background_draw_list(), p_min, p_max, imgui.ImVec4(0, 0, 0, 0.6), 25.0, 6.0)
   
   if app._show_track_proposal_modal:
    imgui.text_colored(C_IN(), "Proposed Implementation Tracks")
@@ -8483,3 +8481,28 @@ def get_bg() -> BackgroundShader:
   _bg = BackgroundShader()
  return _bg
 #endregion: Bg Shader
+
+#region: Shaders (moved from src/shaders.py)
+def draw_soft_shadow(draw_list: imgui.ImDrawList, p_min: imgui.ImVec2, p_max: imgui.ImVec2, color: imgui.ImVec4, shadow_size: float = 10.0, rounding: float = 0.0) -> None:
+ r, g, b, a = color.x, color.y, color.z, color.w
+ steps      = int(shadow_size)
+ if steps <= 0: return
+ alpha_step = a / steps
+ for i in range(steps):
+  current_alpha = a - (i * alpha_step)
+  current_alpha = current_alpha * (1.0 - (i / steps)**2)
+  if current_alpha <= 0.01:
+   continue
+  expand = float(i)
+  c_min = imgui.ImVec2(p_min.x - expand, p_min.y - expand)
+  c_max = imgui.ImVec2(p_max.x + expand, p_max.y + expand)
+  u32_color = imgui.get_color_u32(imgui.ImVec4(r, g, b, current_alpha))
+  draw_list.add_rect(
+   c_min,
+   c_max,
+   u32_color,
+   rounding + expand if rounding > 0 else 0.0,
+   flags=imgui.ImDrawFlags_.round_corners_all if rounding > 0 else imgui.ImDrawFlags_.none,
+   thickness=1.0
+  )
+#endregion: Shaders

src/shaders.py

@@ -1,35 +0,0 @@
-from imgui_bundle import imgui
-
-
-def draw_soft_shadow(draw_list: imgui.ImDrawList, p_min: imgui.ImVec2, p_max: imgui.ImVec2, color: imgui.ImVec4, shadow_size: float = 10.0, rounding: float = 0.0) -> None:
- """
- Simulates a soft shadow effect by drawing multiple concentric rounded rectangles
- with decreasing alpha values. This is a faux-shader effect using primitive batching.
- """
- r, g, b, a = color.x, color.y, color.z, color.w
- steps      = int(shadow_size)
- if steps <= 0: return
-  
- alpha_step = a / steps
- 
- for i in range(steps):
-  current_alpha = a - (i * alpha_step)
-  # Apply an easing function (e.g., cubic) for a smoother shadow falloff
-  current_alpha = current_alpha * (1.0 - (i / steps)**2) 
-  if current_alpha <= 0.01:
-   continue
-  
-  expand = float(i)
-  c_min = imgui.ImVec2(p_min.x - expand, p_min.y - expand)
-  c_max = imgui.ImVec2(p_max.x + expand, p_max.y + expand)
-  
-  u32_color = imgui.get_color_u32(imgui.ImVec4(r, g, b, current_alpha))
-  
-  draw_list.add_rect(
-   c_min, 
-   c_max, 
-   u32_color, 
-   rounding + expand if rounding > 0 else 0.0, 
-   flags=imgui.ImDrawFlags_.round_corners_all if rounding > 0 else imgui.ImDrawFlags_.none,
-   thickness=1.0
-  )