pets get their action bar, macros arrive, and hunters draw the bow

- a hunter's or warlock's pet has its action bar now: attack, follow, stay, the pet's own spells with cooldowns and autocast sparkles
- the macro system lands: the macro window, the icon chooser, /cast and /macro, and macros dragged onto the action bar
- hunter shots look right at last: the bow draws and releases on the shot, and the arrow lays a spark trail its whole flight
- the options window re-dresses in 1.12's own art with the classic dialog look, and gets a working search box and clickable steppers

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/benilla-ui/src/script/action.rs

@@ -26,6 +26,7 @@ use super::Model;
 /// pack/unpack included) — this crate is deliberately engine-free (no protocol dependency, see
 /// the crate doc), so it can't just import `benilla_protocol::messages::ACTION_KIND_*`.
 pub(crate) const ACTION_KIND_SPELL: u8 = 0x00;
+pub(crate) const ACTION_KIND_MACRO: u8 = 0x40;
 pub(crate) const ACTION_KIND_ITEM: u8 = 0x80;
 
 /// What one action slot displays. The app resolves icons (Spell.dbc × SpellIcon.dbc for a spell,
@@ -163,7 +164,7 @@ impl super::UiScript {
 /// reads truthy. Deliberately NOT Lua's plain truthiness (where `0` is truthy) — the reference
 /// passes literal `0` from a keybind meaning "never place", which only a numeric-zero check
 /// reproduces.
-fn truthy_nonzero(v: &Value) -> bool {
+pub(super) fn truthy_nonzero(v: &Value) -> bool {
     match v {
         Value::Nil => false,
         Value::Boolean(b) => *b,