fix(regression): for adding files in the files & media panel.

src/gui_2.py

@@ -3521,6 +3521,7 @@ def render_files_and_media(app: App) -> None:
   imgui.dummy(imgui.ImVec2(0, 5))
   if imgui.button("Add Files to Inventory"):
    r = hide_tk_root(); paths = filedialog.askopenfilenames(); r.destroy()
+   from src import models
    for p in paths:
     if p not in [f.path if hasattr(f, "path") else f for f in app.files]: app.files.append(models.FileItem(path=p))
   imgui.same_line()
@@ -6456,7 +6457,7 @@ def render_mma_track_summary(app: App) -> None:
    | ETA: ~14m (6 tickets remaining)                         |
    +---------------------------------------------------------+
  """
- is_nerv = theme.is_nerv_active()
+ is_nerv    = theme.is_nerv_active()
  track_name = app.active_track.description if app.active_track else "None"
  if getattr(app, "ui_project_execution_mode", "native") == "beads": track_name = "Beads Graph"
  track_stats = project_manager.calculate_track_progress(app.active_track.tickets if app.active_track else app.active_tickets)