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/lib/game/hooks/useGameDerived.ts

@@ -54,6 +54,7 @@ export function useManaStats() {
   );
 
   const disciplineEffects = computeDisciplineEffects();
+  const meditationCap = 5.0 + disciplineEffects.meditationCapBonus;
   const meditationMultiplier = useMemo(
     () => getMeditationBonus(meditateTicks, {}, upgradeEffects.meditationEfficiency, disciplineEffects.meditationCapBonus),
     [meditateTicks, upgradeEffects.meditationEfficiency, disciplineEffects.meditationCapBonus]
@@ -86,6 +87,7 @@ export function useManaStats() {
     baseRegen,
     clickMana,
     meditationMultiplier,
+    meditationCap,
     incursionStrength,
     effectiveRegenWithSpecials,
     manaCascadeBonus,