Replace selectable name sets with a country that owns names and climate presets.

Create picks a country; climate is rolled from the school seed and stored. Old Slavic saves lift as Russia.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/HSchool.Simulation/School.cs

@@ -75,8 +75,11 @@ public sealed class School : IDisposable
 
     public int PeopleSeed { get; private set; }
 
-    /// <summary>Name pack used to generate this school's people. Needed again on 1 September.</summary>
-    public string? NameSetId { get; private set; }
+    /// <summary>Country used to generate this school's people. Needed again on 1 September.</summary>
+    public string? CountryId { get; private set; }
+
+    /// <summary>Climate preset rolled at birth. Phase 32 reads it; it cannot change on a live school.</summary>
+    public string? ClimatePresetId { get; private set; }
 
     /// <summary>Skill everyone generated for this school speaks natively.</summary>
     public string? NativeLanguage { get; private set; }
@@ -118,14 +121,15 @@ public sealed class School : IDisposable
     /// <summary>
     /// Installs a roster that already matches the map. Spawns entities; does not write to disk.
     /// </summary>
-    public void InstallPeople(Roster roster, int seed, string? nameSetId = null, ApplicantPool? applicants = null, string? nativeLanguage = null)
+    public void InstallPeople(Roster roster, int seed, string? countryId = null, ApplicantPool? applicants = null, string? nativeLanguage = null, string? climatePresetId = null)
     {
         ObjectDisposedException.ThrowIf(_disposed, this);
         ArgumentNullException.ThrowIfNull(roster);
 
         Roster = roster;
         PeopleSeed = seed;
-        NameSetId = nameSetId;
+        CountryId = countryId;
+        ClimatePresetId = climatePresetId;
         NativeLanguage = nativeLanguage;
         Applicants = applicants;
         RosterSpawner.Spawn(World, roster);
@@ -278,7 +282,7 @@ public sealed class School : IDisposable
 
     private bool TryYearlyIntake(DateTime before, DateTime after)
     {
-        if (Roster is null || Catalog is null || NameSetId is null)
+        if (Roster is null || Catalog is null || CountryId is null)
         {
             return false;
         }
@@ -286,7 +290,7 @@ public sealed class School : IDisposable
         var changed = false;
         foreach (var date in YearlyIntake.DatesBetween(before, after))
         {
-            Roster = YearlyIntake.Apply(Catalog, Roster, PeopleSeed, NameSetId, date, NativeLanguage);
+            Roster = YearlyIntake.Apply(Catalog, Roster, PeopleSeed, CountryId, date, NativeLanguage);
             changed = true;
         }
 
@@ -303,12 +307,12 @@ public sealed class School : IDisposable
 
     private bool TryApplicantRefresh()
     {
-        if (Applicants is null || Roster is null || Catalog is null || NameSetId is null || Catalog.StaffingRules is null)
+        if (Applicants is null || Roster is null || Catalog is null || CountryId is null || Catalog.StaffingRules is null)
         {
             return false;
         }
 
-        var next = Applicants.Advance(Catalog, Roster, PeopleSeed, NameSetId, Clock.Time, NativeLanguage);
+        var next = Applicants.Advance(Catalog, Roster, PeopleSeed, CountryId, Clock.Time, NativeLanguage);
         if (next.Week == Applicants.Week)
         {
             return false;

src/HSchool.Simulation/SchoolCreationError.cs

@@ -13,7 +13,7 @@ public enum SchoolCreationError
     InvalidMap,
     UnknownMod,
     InvalidCatalog,
-    UnknownNameSet,
+    UnknownCountry,
     UnknownNativeLanguage,
     MissingMod,
     ModCycle,