Weather above ground: rain puts out fires, fog shortens sight, storms strike with lightning

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

src/game.rs

@@ -636,6 +636,8 @@ pub struct Game {
     #[serde(default)]
     pub bridgework: crate::bridges::BridgeWork, // burning and worn bridges
     #[serde(default)]
+    pub weather: crate::weather::Weather, // above ground (weather.rs)
+    #[serde(default)]
     pub trading: crate::traders::Trading, // the visiting trader (traders.rs)
     #[serde(default)]
     pub happenings: Option<crate::events::Events>, // random events (free games and versus), see events.rs
@@ -991,6 +993,7 @@ impl Game {
             vrng: crate::particles::vrng(),
             dwarf_caves: Vec::new(),
             bridgework: Default::default(),
+            weather: Default::default(),
             trading: Default::default(),
             happenings: None,
             snares: Vec::new(),
@@ -1805,6 +1808,7 @@ impl Game {
             self.update_rivals(dt);
         }
         self.update_dwarves(dt);
+        self.update_weather(dt);
         self.update_bridges(dt);
         self.update_wood(dt);
         self.update_events(dt);