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src/lib/game/data/attunements.ts

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+// ─── Attunement Definitions ─────────────────────────────────────────────────────
+// Attunements are class-like abilities tied to body locations
+// Each provides unique capabilities, primary mana types, and skill access
+
+import type { AttunementDef, AttunementSlot } from '../types';
+
+// Attunement slot display names
+export const ATTUNEMENT_SLOT_NAMES: Record<AttunementSlot, string> = {
+  rightHand: 'Right Hand',
+  leftHand: 'Left Hand',
+  head: 'Head',
+  back: 'Back',
+  chest: 'Chest',
+  leftLeg: 'Left Leg',
+  rightLeg: 'Right Leg',
+};
+
+// All attunement definitions
+export const ATTUNEMENTS_DEF: Record<string, AttunementDef> = {
+  // ─── Enchanter (Right Hand) ─────────────────────────────────────────────────
+  // Unlocks the enchanting system - applying magical effects to equipment
+  // Primary mana: Transference (used to move/apply enchantments)
+  enchanter: {
+    id: 'enchanter',
+    name: 'Enchanter',
+    desc: 'Channel transference mana through your right hand to apply magical enchantments to equipment. The art of enchanting allows you to imbue items with spell effects, stat bonuses, and special properties.',
+    slot: 'rightHand',
+    icon: '✨',
+    color: '#1ABC9C', // Teal (transference color)
+    primaryManaType: 'transference',
+    rawManaRegen: 0.5,
+    conversionRate: 0.2, // Converts 0.2 raw mana to transference per hour
+    unlocked: true, // Starting attunement
+    capabilities: ['enchanting', 'disenchanting'],
+    skillCategories: ['enchant', 'effectResearch'],
+  },
+
+  // ─── Invoker (Chest/Heart) ───────────────────────────────────────────────────
+  // Enables forming pacts with spire guardians
+  // No primary mana - instead gains mana types from each pact signed
+  invoker: {
+    id: 'invoker',
+    name: 'Invoker',
+    desc: 'Open your heart to the guardians of the spire. Form pacts with defeated guardians to gain their elemental affinity and access to their unique powers. Each pact grants access to a new mana type.',
+    slot: 'chest',
+    icon: '💜',
+    color: '#9B59B6', // Purple
+    primaryManaType: undefined, // Invoker has no primary - gains from pacts
+    rawManaRegen: 0.3,
+    conversionRate: 0, // No automatic conversion - mana comes from pacts
+    unlocked: false, // Unlocked through gameplay
+    unlockCondition: 'Defeat your first guardian and choose the path of the Invoker',
+    capabilities: ['pacts', 'guardianPowers', 'elementalMastery'],
+    skillCategories: ['invocation', 'pact'],
+  },
+
+  // ─── Fabricator (Left Hand) ──────────────────────────────────────────────────
+  // Crafts earth golems and earthen gear
+  // Primary mana: Earth
+  // Later with fire mana -> metal mana, can craft metallic gear and golems
+  fabricator: {
+    id: 'fabricator',
+    name: 'Fabricator',
+    desc: 'Shape earth and metal through your left hand to craft golems and equipment. Start with earthen constructs, and unlock metalworking when you gain fire mana to create metal mana.',
+    slot: 'leftHand',
+    icon: '⚒️',
+    color: '#F4A261', // Earth color
+    primaryManaType: 'earth',
+    rawManaRegen: 0.4,
+    conversionRate: 0.25, // Converts 0.25 raw mana to earth per hour
+    unlocked: false, // Unlocked through gameplay
+    unlockCondition: 'Prove your worth as a crafter',
+    capabilities: ['golemCrafting', 'gearCrafting', 'earthShaping'],
+    skillCategories: ['fabrication', 'golemancy'],
+  },
+};
+
+// Helper function to get attunement by slot
+export function getAttunementBySlot(slot: AttunementSlot): AttunementDef | undefined {
+  return Object.values(ATTUNEMENTS_DEF).find(a => a.slot === slot);
+}
+
+// Helper function to get all unlocked attunements for a player
+export function getUnlockedAttunements(attunements: Record<string, { active: boolean; level: number; experience: number }>): AttunementDef[] {
+  return Object.entries(attunements)
+    .filter(([id, state]) => state.active || ATTUNEMENTS_DEF[id]?.unlocked)
+    .map(([id]) => ATTUNEMENTS_DEF[id])
+    .filter(Boolean);
+}
+
+// Helper function to calculate total raw mana regen from attunements (with level scaling)
+export function getTotalAttunementRegen(attunements: Record<string, { active: boolean; level: number; experience: number }>): number {
+  return Object.entries(attunements)
+    .filter(([, state]) => state.active)
+    .reduce((total, [id, state]) => {
+      const def = ATTUNEMENTS_DEF[id];
+      if (!def) return total;
+      // Exponential scaling: base * (1.5 ^ (level - 1))
+      const levelMult = Math.pow(1.5, (state.level || 1) - 1);
+      return total + def.rawManaRegen * levelMult;
+    }, 0);
+}
+
+// Get conversion rate with level scaling
+export function getAttunementConversionRate(attunementId: string, level: number): number {
+  const def = ATTUNEMENTS_DEF[attunementId];
+  if (!def || def.conversionRate <= 0) return 0;
+  // Exponential scaling: base * (1.5 ^ (level - 1))
+  return def.conversionRate * Math.pow(1.5, (level || 1) - 1);
+}
+
+// XP required for attunement level
+export function getAttunementXPForLevel(level: number): number {
+  // New scaling: 
+  // Level 2: 1000 XP
+  // Level 3: 2500 XP
+  // Level 4: 5000 XP
+  // Level 5: 10000 XP
+  // etc. (each level requires 2x the previous, starting from 1000)
+  if (level <= 1) return 0;
+  if (level === 2) return 1000;
+  // For level 3+: 1000 * 2.5^(level-2), but rounded nicely
+  return Math.floor(1000 * Math.pow(2, level - 2) * (level >= 3 ? 1.25 : 1));
+}
+
+// Calculate XP gained from enchanting based on capacity used
+export function calculateEnchantingXP(capacityUsed: number): number {
+  // 1 XP per 10 capacity used, floored, minimum 1
+  return Math.max(1, Math.floor(capacityUsed / 10));
+}
+
+// Max attunement level
+export const MAX_ATTUNEMENT_LEVEL = 10;
+
+// Helper function to get mana types from active attunements and pacts
+export function getAttunementManaTypes(
+  attunements: Record<string, { active: boolean; level: number; experience: number }>,
+  signedPacts: number[]
+): string[] {
+  const manaTypes: string[] = [];
+  
+  // Add primary mana types from active attunements
+  Object.entries(attunements)
+    .filter(([, state]) => state.active)
+    .forEach(([id]) => {
+      const def = ATTUNEMENTS_DEF[id];
+      if (def?.primaryManaType) {
+        manaTypes.push(def.primaryManaType);
+      }
+    });
+  
+  // Invoker gains mana types from signed pacts
+  if (attunements.invoker?.active && signedPacts.length > 0) {
+    // Import GUARDIANS would be circular, so this is handled in the store
+    // For now, just mark that invoker provides pact-based mana
+    manaTypes.push('pactElements');
+  }
+  
+  return [...new Set(manaTypes)]; // Remove duplicates
+}
+
+// Get skill categories available to player based on active attunements
+export function getAvailableSkillCategories(
+  attunements: Record<string, { active: boolean; level: number; experience: number }>
+): string[] {
+  const categories = new Set<string>();
+  
+  // Always available categories
+  categories.add('mana');
+  categories.add('study');
+  categories.add('research');
+  categories.add('ascension');
+  
+  // Add categories from active attunements
+  Object.entries(attunements)
+    .filter(([, state]) => state.active)
+    .forEach(([id]) => {
+      const def = ATTUNEMENTS_DEF[id];
+      if (def?.skillCategories) {
+        def.skillCategories.forEach(cat => categories.add(cat));
+      }
+    });
+  
+  return Array.from(categories);
+}