Sort residents by least flexibility first

src-tauri/src/config.rs

@@ -17,8 +17,8 @@ const YEAR: i32 = 2026;
 pub struct ToxicPair((ResidentId, ResidentId));
 
 impl ToxicPair {
-    pub fn new(res_id_1: u8, res_id_2: u8) -> Self {
-        Self((ResidentId(res_id_1), ResidentId(res_id_2)))
+    pub fn new(r_id_1: u8, r_id_2: u8) -> Self {
+        Self((ResidentId(r_id_1), ResidentId(r_id_2)))
     }
 
     pub fn matches(&self, other: &ToxicPair) -> bool {
@@ -134,6 +134,14 @@ impl UserConfig {
         }
         supply
     }
+
+    pub fn flexibility_map(&self) -> HashMap<ResidentId, u8> {
+        let mut map = HashMap::new();
+        for r in &self.residents {
+            map.insert(r.id, r.allowed_types.len() as u8);
+        }
+        map
+    }
 }
 
 impl Default for UserConfig {