Refine Select.field-input styling

Adjust Select.field-input CSS to remove its own border and padding (keeping height: 3) and prevent double borders on focus. Add a rule to give the inner SelectCurrent element the standard border so the visual outline is applied to the correct child, while the existing focus rule still highlights SelectCurrent with the amber border. These tweaks clean up layout and border rendering for select inputs.

Author: CptPlastic

src/lore/tui.py

@@ -275,7 +275,9 @@ class AddMemoryScreen(ModalScreen):
         border: solid {_BORDER}; margin-bottom: 1;
     }}
     .field-input:focus {{ border: solid {_AMBER}; color: {_PHOSPHOR_H}; }}
-    Select.field-input {{ height: 3; }}
+    Select.field-input {{ height: 3; border: none; padding: 0; }}
+    Select.field-input:focus {{ border: none; }}
+    Select.field-input > SelectCurrent {{ border: solid {_BORDER}; }}
     Select.field-input:focus > SelectCurrent {{ border: solid {_AMBER}; }}
     #new-cat-input {{ display: none; }}
     #new-cat-input.visible {{ display: block; }}