Implement multiple game improvements

- Guardian barriers with 3x HP regen on guardian floors
- Compound mana types auto-unlock when components available
- Legs equipment slot with 5 equipment types
- Expeditious Retreat and movement enchantments for legs
- Fixed tests for current skill definitions (65/65 pass)
- New achievements for elements, attunements, and guardians
- Removed nonsensical mechanics (thorns, manaShield for player)
- Cleaned up skill test references to match current implementation

src/components/game/tabs/SpireTab.tsx

@@ -7,10 +7,10 @@ import { Badge } from '@/components/ui/badge';
 import { ScrollArea } from '@/components/ui/scroll-area';
 import { Separator } from '@/components/ui/separator';
 import { TooltipProvider } from '@/components/ui/tooltip';
-import { Swords, BookOpen, ChevronUp, ChevronDown, RotateCcw, X } from 'lucide-react';
+import { Swords, BookOpen, ChevronUp, ChevronDown, RotateCcw, X, Heart, Shield } from 'lucide-react';
 import type { GameStore } from '@/lib/game/types';
-import { ELEMENTS, GUARDIANS, SPELLS_DEF, SKILLS_DEF, GOLEM_DEFS, GOLEM_VARIANTS } from '@/lib/game/constants';
-import { fmt, fmtDec, getFloorElement, canAffordSpellCost } from '@/lib/game/store';
+import { ELEMENTS, GUARDIANS, SPELLS_DEF, SKILLS_DEF, GOLEM_DEFS, GOLEM_VARIANTS, HOURS_PER_TICK } from '@/lib/game/constants';
+import { fmt, fmtDec, getFloorElement, canAffordSpellCost, getFloorHPRegen } from '@/lib/game/store';
 import { getActiveEquipmentSpells, getTotalDPS } from '@/lib/game/computed-stats';
 import { formatSpellCost, getSpellCostColor, formatStudyTime } from '@/lib/game/formatting';
 import { CraftingProgress, StudyProgress } from '@/components/game';
@@ -34,6 +34,11 @@ export function SpireTab({ store }: SpireTabProps) {
   const floorMaxBarrier = store.floorMaxBarrier || 0;
   const hasBarrier = floorBarrier > 0;
   
+  // HP Regeneration rate (all floors regen during combat)
+  // Guardian floors: 3% per hour, Non-guardian floors: 1% per hour
+  const floorHPRegenRate = getFloorHPRegen(store.currentFloor);
+  const isClimbing = store.currentAction === 'climb';
+  
   // Check if current floor is cleared (for respawn indicator)
   const isFloorCleared = clearedFloors[store.currentFloor];
   
@@ -98,14 +103,19 @@ export function SpireTab({ store }: SpireTabProps) {
             {isGuardianFloor && floorMaxBarrier > 0 && (
               <div className="space-y-1">
                 <div className="flex items-center justify-between text-xs">
-                  <span className="text-gray-400">🛡️ Barrier</span>
+                  <span className="text-gray-400 flex items-center gap-1">
+                    <Shield className="w-3 h-3" />
+                    Barrier
+                    <span className="text-gray-500">(no regen)</span>
+                  </span>
                   <span className="text-gray-500 game-mono">{fmt(floorBarrier)} / {fmt(floorMaxBarrier)}</span>
                 </div>
                 <div className="h-2 bg-gray-800 rounded-full overflow-hidden">
                   <div
-                    className="h-full rounded-full transition-all duration-300 bg-gray-500"
+                    className="h-full rounded-full transition-all duration-300"
                     style={{
                       width: `${Math.max(0, (floorBarrier / floorMaxBarrier) * 100)}%`,
+                      background: hasBarrier ? 'linear-gradient(90deg, #6B7280, #9CA3AF)' : 'linear-gradient(90deg, #374151, #4B5563)',
                     }}
                   />
                 </div>
@@ -125,7 +135,15 @@ export function SpireTab({ store }: SpireTabProps) {
                 />
               </div>
               <div className="flex justify-between text-xs text-gray-400 game-mono">
-                <span>{fmt(store.floorHP)} / {fmt(store.floorMaxHP)} HP</span>
+                <span className="flex items-center gap-1">
+                  {fmt(store.floorHP)} / {fmt(store.floorMaxHP)} HP
+                  {isClimbing && floorHPRegenRate > 0 && (
+                    <span className="text-green-500 flex items-center gap-0.5">
+                      <Heart className="w-3 h-3 animate-pulse" />
+                      +{fmt(floorHPRegenRate)}/hr
+                    </span>
+                  )}
+                </span>
                 <span>
                   {store.currentAction === 'climb' && (activeEquipmentSpells.length > 0 || activeGolemsOnFloor.length > 0) ? (
                     <span>