fix(#165,#166,#167,#168,#169,#171,#172): resolve 7 open bug issues

#172 - Grimoire tab: removed dead 'loaded' state guard that permanently showed loading
#169 - Transference Mana Flow: added elements param to checkDisciplinePrerequisites so mana type unlocks are verified
#168 - Perk descriptions: wired 4 broken perks (enchant-2, channel-1, golem-2, efficiency-1) with actual bonus effects; fixed enchant-1 interval (5→50); fixed study-mana-enchantments stat (maxMana→maxManaBonus)
#171 - Shields: removed all shield equipment (4 types), recipes, category, slot mappings; added 'shields' to AGENTS.md banned list
#166 - regenMultiplier: merged disciplineEffects.multipliers.regenMultiplier into computeAllEffects()
#165 - Meditation cap: added meditationCap display to ManaStatsSection UI; updated perk description
#167 - XP accumulation: added Meditative Mastery base discipline with disciplineXpBonus stat; wired into tick pipeline

src/components/game/LootInventory/icons.ts

@@ -3,7 +3,6 @@ import {
   Sparkles,
   Package,
   Sword,
-  Shield,
   Shirt,
   Crown,
   Wrench
@@ -11,7 +10,6 @@ import {
 
 export const CATEGORY_ICONS: Record<string, typeof Sword> = {
   caster: Sword,
-  shield: Shield,
   catalyst: Sparkles,
   head: Crown,
   body: Shirt,

src/components/game/tabs/CraftingTab/FabricatorSubTab.tsx

@@ -24,7 +24,7 @@ const BRANCH_RECIPE_IDS = new Set([
   'oakStaff', 'arcanistStaff', 'battlestaff', 'arcanistCirclet', 'arcanistRobe',
   'voidCatalyst', 'arcanistPendant',
   'crystalBlade', 'arcanistBlade', 'voidBlade', 'battleHelm', 'battleRobe',
-  'battleBoots', 'combatGauntlets', 'runicShield', 'manaShield',
+  'battleBoots', 'combatGauntlets',
 ]);
 
 function isWizardBranch(recipe: FabricatorRecipe): boolean {
@@ -34,8 +34,7 @@ function isWizardBranch(recipe: FabricatorRecipe): boolean {
 
 function isPhysicalBranch(recipe: FabricatorRecipe): boolean {
   return ['crystalBlade', 'arcanistBlade', 'voidBlade', 'battleHelm',
-    'battleRobe', 'battleBoots', 'combatGauntlets', 'runicShield',
-    'manaShield'].includes(recipe.id);
+    'battleRobe', 'battleBoots', 'combatGauntlets'].includes(recipe.id);
 }
 
 function RecipeCard({

src/components/game/tabs/DisciplinesTab.tsx

@@ -257,7 +257,7 @@ export const DisciplinesTab: React.FC = () => {
       <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4">
         {activeTab?.items.map((disc) => {
           const discState = disciplines[disc.id] ?? { xp: 0, paused: true };
-          const prereqCheck = checkDisciplinePrerequisites(disc, disciplines, ALL_DISCIPLINES);
+          const prereqCheck = checkDisciplinePrerequisites(disc, disciplines, ALL_DISCIPLINES, elements);
           return (
             <DisciplineCard
               key={disc.id}

src/components/game/tabs/StatsTab.tsx

@@ -25,7 +25,11 @@ export function StatsTab() {
   return (
     <div className="space-y-4">
       <ManaStatsSection
-        stats={{ ...manaStats, rawMana: manaStats.maxMana }}
+        stats={{
+          ...manaStats,
+          rawMana: manaStats.maxMana,
+          meditationCap: manaStats.meditationCap,
+        }}
         elemMax={elemMax}
       />
       <CombatStatsSection

src/components/game/tabs/StatsTab/ManaStatsSection.tsx

@@ -11,6 +11,7 @@ export interface ManaStatsData {
   effectiveRegen: number;
   clickMana: number;
   meditationMultiplier: number;
+  meditationCap: number;
   upgradeEffects: ComputedEffects;
   incursionStrength: number;
   rawMana: number;
@@ -124,6 +125,10 @@ export function ManaStatsSection({ stats, elemMax }: ManaStatsSectionProps) {
                 {fmtDec(meditationMultiplier, 2)}x
               </span>
             </div>
+            <div className="flex justify-between text-sm">
+              <span style={{ color: 'var(--text-muted)' }}>Meditation Cap:</span>
+              <span style={{ color: 'var(--text-secondary)' }}>{fmtDec(stats.meditationCap, 1)}x</span>
+            </div>
             <div className="flex justify-between text-sm">
               <span style={{ color: 'var(--text-muted)' }}>Incursion Strength:</span>
               <span style={{ color: 'var(--color-danger)' }}>{Math.round(incursionStrength * 100)}%</span>