Add TitleBenefit model and integrate benefits into FalukantService: Introduced TitleBenefit for managing title-related advantages, including tax exemptions and office eligibility. Updated service methods to utilize these benefits for character reputation, tax distribution, and allowed office types, enhancing gameplay mechanics and user experience.

backend/models/falukant/type/title_benefit.js

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+import { Model, DataTypes } from 'sequelize';
+import { sequelize } from '../../../utils/sequelize.js';
+
+/**
+ * Vorteile pro Stand (Adelstitel).
+ * benefit_type: 'tax_share' | 'tax_exempt' | 'office_eligibility' | 'free_party_type' | 'reputation_bonus'
+ * parameters: JSONB, z.B. { officeTypeNames: [] }, { partyTypeIds: [] }, { minPercent: 5, maxPercent: 15 }
+ */
+class TitleBenefit extends Model {}
+
+TitleBenefit.init({
+    id: {
+        type: DataTypes.INTEGER,
+        primaryKey: true,
+        autoIncrement: true
+    },
+    titleId: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        field: 'title_id'
+    },
+    benefitType: {
+        type: DataTypes.STRING,
+        allowNull: false,
+        field: 'benefit_type'
+    },
+    parameters: {
+        type: DataTypes.JSONB,
+        allowNull: true,
+        defaultValue: {}
+    }
+}, {
+    sequelize,
+    modelName: 'TitleBenefit',
+    tableName: 'title_benefit',
+    schema: 'falukant_type',
+    timestamps: false,
+    underscored: true
+});
+
+export default TitleBenefit;