fix(palette): auto-focus input via set_next_window_focus + apply(theme) + try/except for actions

Added imgui.set_next_window_focus() on open so the palette window itself gets focus. The input field then gets focus on the next drawn widget. Wrapped action calls in try/except so a buggy command does not break the imgui.end_child/end pairing (was causing IM_ASSERT crash). Fixed theme_2 calls: apply_dark_theme and apply_light_theme do not exist; use theme_2.apply(palette_name). switch_to_dark_theme uses apply 10x Dark. switch_to_light_theme uses apply ImGui Light. switch_to_nerv_theme uses apply NERV instead of apply_nerv() from src.theme_nerv.

src/commands.py

@@ -69,20 +69,20 @@ def show_documentation(app: "App") -> None:
 
 @registry.register
 def switch_to_dark_theme(app: "App") -> None:
- """Switch to Dark Theme."""
+ """Switch to Dark Theme (10x Dark palette)."""
  from src import theme_2
- theme_2.apply_dark_theme()
+ theme_2.apply("10x Dark")
 
 
 @registry.register
 def switch_to_light_theme(app: "App") -> None:
- """Switch to Light Theme."""
+ """Switch to Light Theme (ImGui Light palette)."""
  from src import theme_2
- theme_2.apply_light_theme()
+ theme_2.apply("ImGui Light")
 
 
 @registry.register
 def switch_to_nerv_theme(app: "App") -> None:
  """Switch to NERV Theme."""
- from src.theme_nerv import apply_nerv
- apply_nerv()
+ from src import theme_2
+ theme_2.apply("NERV")