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/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({