Add talk circles with TopicDef, staff/phone chat, and opinion outcomes.

src/HSchool.Content/PeopleDefs.cs

@@ -162,6 +162,14 @@ public sealed class TraitSkillModifier
     public int Offset { get; init; }
 }
 
+/// <summary>Biases topic pick toward a tag. Used on gossip and similar traits.</summary>
+public sealed class TopicTagWeight
+{
+    public required string Tag { get; init; }
+
+    public float Weight { get; init; } = 1f;
+}
+
 public sealed class TraitDef : Def
 {
     public int Weight { get; init; } = 1;
@@ -190,6 +198,39 @@ public sealed class TraitDef : Def
     /// cold-loving is negative.
     /// </summary>
     public float ComfortTemperatureOffset { get; init; }
+
+    /// <summary>How often this person initiates talk. Quiet below 1, leader above.</summary>
+    public float TalkInitiative { get; init; } = 1f;
+
+    /// <summary>Extra seats preferred in a circle. Social trait raises it.</summary>
+    public int TalkCircleBonus { get; init; }
+
+    /// <summary>Multiplies opinion shift from talk. Gossip above 1.</summary>
+    public float TalkOpinionMultiplier { get; init; } = 1f;
+
+    /// <summary>Pull toward topics carrying these tags when this person picks the subject.</summary>
+    public IReadOnlyList<TopicTagWeight> TalkTagWeights { get; init; } = [];
+}
+
+/// <summary>Conversation subject. Tags gate appropriateness; language is optional skill help.</summary>
+public sealed class TopicDef : Def
+{
+    /// <summary>Vanilla tags: study, games, food, family, sport, gossip, rude, appearance.</summary>
+    public IReadOnlyList<string> Tags { get; init; } = [];
+
+    public IntRange? Age { get; init; }
+
+    /// <summary>Empty means every role.</summary>
+    public IReadOnlyList<string> Roles { get; init; } = [];
+
+    /// <summary>Allowed as whisper on lesson — phase 43 uses this; ordinary Chat does not.</summary>
+    public bool WhisperOnLesson { get; init; }
+
+    /// <summary>Skill that helps when shared above threshold. Null — any language works equally.</summary>
+    public string? Language { get; init; }
+
+    /// <summary>Base opinion shift toward each other participant when talk succeeds.</summary>
+    public int OpinionShift { get; init; } = 2;
 }
 
 public sealed class StaffingDef : Def
@@ -329,6 +370,36 @@ public sealed class BehaviorDef : Def
     /// </summary>
     public IReadOnlyList<OpinionBand> OpinionBands { get; init; } = DefaultOpinionBands;
 
+    /// <summary>Skill points Communication gains per game hour of talk — less than a lesson.</summary>
+    public float TalkSkillPerHour { get; init; } = 0.02f;
+
+    /// <summary>Language used in talk, when not already at skill max.</summary>
+    public float TalkLanguageSkillPerHour { get; init; } = 0.005f;
+
+    /// <summary>Minimum shared language skill for full opinion shift.</summary>
+    public int TalkLanguageThreshold { get; init; } = 25;
+
+    /// <summary>Opinion multiplier when participants share no language above threshold.</summary>
+    public float TalkNoLanguageOpinionMultiplier { get; init; } = 0.15f;
+
+    /// <summary>Opinion multiplier for phone chat vs live circle.</summary>
+    public float TalkPhoneOpinionMultiplier { get; init; } = 0.5f;
+
+    /// <summary>How much Communication scales opinion shift (per 100 points).</summary>
+    public float TalkCommunicationOpinionScale { get; init; } = 0.5f;
+
+    /// <summary>Minimum circle size. Below this Chat does not start.</summary>
+    public int TalkCircleMin { get; init; } = 2;
+
+    /// <summary>Maximum people in one live circle.</summary>
+    public int TalkCircleMax { get; init; } = 4;
+
+    /// <summary>Opinion at or above — friend for invites and node pull.</summary>
+    public int TalkFriendThreshold { get; init; } = 40;
+
+    /// <summary>Opinion at or below — enemy; never invited, lunch nodes avoided.</summary>
+    public int TalkEnemyThreshold { get; init; } = -40;
+
     public static IReadOnlyList<OpinionBand> DefaultOpinionBands { get; } =
     [
         new() { Min = 70, Id = "OpinionCloseFriend" },