fix: Elemental Mana Capacity disciplines now increase element capacity

- Add optional baseMax field to ElementState to track prestige-derived max separately from bonuses
- Add computeElementMaxWithBonuses action to manaStore that computes max = baseMax + per-element bonus
- Apply per-element cap bonuses from disciplines and equipment in game tick (elementCap_* keys)
- Fix resetMana to use correct prestige key (elementalAttune instead of nonexistent elemMax)
- Add store migration (v1->v2) to populate baseMax for existing saved games
- Extract pact ritual processing to pipelines/pact-ritual.ts
- Extract element cap bonus utilities to utils/element-cap-bonus.ts
- Fix inline element types in crafting-fabricator.ts
- Update test fixtures to include baseMax in element literals

Fixes #185

src/lib/game/utils/element-cap-bonus.ts

@@ -0,0 +1,38 @@
+// ─── Element Capacity Bonus Utilities ─────────────────────────────────────────
+// Extracts and merges per-element capacity bonuses from discipline and equipment
+// effects for application during the game tick.
+
+/**
+ * Extract elementCap_* bonuses from a bonus record.
+ * Returns a map of element name → bonus amount.
+ */
+export function extractElementCapBonuses(
+  bonuses: Record<string, number>
+): Record<string, number> {
+  const result: Record<string, number> = {};
+  for (const [key, value] of Object.entries(bonuses)) {
+    if (key.startsWith('elementCap_') && value > 0) {
+      const element = key.replace('elementCap_', '');
+      result[element] = (result[element] || 0) + value;
+    }
+  }
+  return result;
+}
+
+/**
+ * Merge elementCap_* bonuses from discipline and equipment effects
+ * into a single per-element bonus map.
+ */
+export function mergePerElementCapBonuses(
+  disciplineBonuses: Record<string, number>,
+  equipmentBonuses: Record<string, number>,
+): Record<string, number> {
+  const merged: Record<string, number> = {};
+  for (const [element, value] of Object.entries(extractElementCapBonuses(disciplineBonuses))) {
+    merged[element] = (merged[element] || 0) + value;
+  }
+  for (const [element, value] of Object.entries(extractElementCapBonuses(equipmentBonuses))) {
+    merged[element] = (merged[element] || 0) + value;
+  }
+  return merged;
+}