Master talents: experience, points and four branches (Builder, Warlord, Warlock, Merchant) with a toolbar window

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/main.rs

@@ -30,6 +30,7 @@ mod props;
 mod research;
 mod rival;
 mod rogues;
+mod talents;
 mod render3d;
 mod rooms;
 mod save;
@@ -1821,6 +1822,7 @@ app.pending_briefing = briefing_of(&campaign, i);
                     }
                     UiAction::OpenMenu => menu.page = Some(Page::Pause),
                     UiAction::SendGold(to, amount) => app.game.queue(Act::SendGold { to, amount }),
+                    UiAction::LearnTalent(branch) => app.game.queue(Act::Talent { branch }),
                     UiAction::Locked => {
                         let locked = ui.last_locked.unwrap_or(usize::MAX);
                         app.game.msg(if app.game.can_research(locked) { "msg.tool_research" } else { "msg.tool_locked" }, vec![]);