diff --git a/docs/circular-deps.txt b/docs/circular-deps.txt
index b21437a..4bba053 100644
--- a/docs/circular-deps.txt
+++ b/docs/circular-deps.txt
@@ -1,8 +1,8 @@
 # Circular Dependencies
-Generated: 2026-05-19T12:44:32.003Z
+Generated: 2026-05-19T13:55:24.489Z
 Found: 3 circular chain(s) — these MUST be fixed before modifying involved files.
 
-1. Processed 121 files (1.2s) (4 warnings)
+1. Processed 121 files (1.3s) (4 warnings)
 2. 1) data/equipment/index.ts > data/equipment/utils.ts
 3. 2) data/golems/index.ts > data/golems/utils.ts
 
diff --git a/docs/dependency-graph.json b/docs/dependency-graph.json
index 9507e54..e463c78 100644
--- a/docs/dependency-graph.json
+++ b/docs/dependency-graph.json
@@ -1,6 +1,6 @@
 {
   "_meta": {
-    "generated": "2026-05-19T12:44:30.633Z",
+    "generated": "2026-05-19T13:55:23.066Z",
     "description": "Import dependency graph for src/lib/game. Keys are files, values are arrays of files they import.",
     "usage": "To find what a file affects, search for its path in the VALUES. To find what a file depends on, look at its KEY entry."
   },
diff --git a/docs/project-structure.txt b/docs/project-structure.txt
index 4297d75..5c2a7d6 100644
--- a/docs/project-structure.txt
+++ b/docs/project-structure.txt
@@ -106,6 +106,8 @@ Mana-Loop/
 │   │   │   │   │   └── StudyStatsSection.tsx
 │   │   │   │   ├── AchievementsTab.tsx
 │   │   │   │   ├── ActivityLog.tsx
+│   │   │   │   ├── AttunementsTab.test.ts
+│   │   │   │   ├── AttunementsTab.tsx
 │   │   │   │   ├── DebugTab.test.ts
 │   │   │   │   ├── DebugTab.tsx
 │   │   │   │   ├── DisciplinesTab.tsx
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 0837bf3..737ce99 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -46,6 +46,7 @@ const SpellsTab = lazy(() => import('@/components/game/tabs').then(module => ({
 const StatsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.StatsTab })));
 const DebugTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.DebugTab })));
 const AchievementsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.AchievementsTab })));
+const AttunementsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.AttunementsTab })));
 
 const TabLoadingFallback = () => <div className="p-4 text-center text-gray-400">Loading...</div>;
 
@@ -236,6 +237,7 @@ export default function ManaLoopGame() {
                   <TabsTrigger value="disciplines" className="text-xs px-2 py-1">📚 Disciplines</TabsTrigger>
                   <TabsTrigger value="grimoire" className="text-xs px-2 py-1">📖 Grimoire</TabsTrigger>
                   <TabsTrigger value="debug" className="text-xs px-2 py-1">🐛 Debug</TabsTrigger>
+                  <TabsTrigger value="attunements" className="text-xs px-2 py-1">⚗️ Attunements</TabsTrigger>
                   <TabsTrigger value="achievements" className="text-xs px-2 py-1">🏆 Achievements</TabsTrigger>
                 </TabsList>
 
@@ -275,6 +277,14 @@ export default function ManaLoopGame() {
                   </ErrorBoundary>
                 </TabsContent>
 
+                <TabsContent value="attunements">
+                  <ErrorBoundary fallback={<div className="p-4 text-red-400">attunements tab failed to load.</div>}>
+                    <Suspense fallback={<TabLoadingFallback />}>
+                      <AttunementsTab />
+                    </Suspense>
+                  </ErrorBoundary>
+                </TabsContent>
+
                 <TabsContent value="achievements">
                   <ErrorBoundary fallback={<div className="p-4 text-red-400">achievements tab failed to load.</div>}>
                     <Suspense fallback={<TabLoadingFallback />}>
diff --git a/src/components/game/tabs/AttunementsTab.test.ts b/src/components/game/tabs/AttunementsTab.test.ts
new file mode 100644
index 0000000..50e903b
--- /dev/null
+++ b/src/components/game/tabs/AttunementsTab.test.ts
@@ -0,0 +1,145 @@
+import { describe, it, expect, vi } from 'vitest';
+
+// ─── Test: AttunementsTab barrel export ───────────────────────────────────────
+
+describe('AttunementsTab module structure', () => {
+  it('exports AttunementsTab from barrel index', async () => {
+    const mod = await import('./AttunementsTab');
+    expect(mod.AttunementsTab).toBeDefined();
+    expect(typeof mod.AttunementsTab).toBe('function');
+  });
+
+  it('AttunementsTab has correct displayName', async () => {
+    const { AttunementsTab } = await import('./AttunementsTab');
+    expect(AttunementsTab.displayName).toBe('AttunementsTab');
+  });
+});
+
+// ─── Test: Barrel export includes AttunementsTab ──────────────────────────────
+
+describe('Tab barrel export', () => {
+  it('includes AttunementsTab in the tabs index', async () => {
+    const mod = await import('@/components/game/tabs');
+    expect(mod.AttunementsTab).toBeDefined();
+    expect(typeof mod.AttunementsTab).toBe('function');
+  });
+});
+
+// ─── Test: Attunement data integrity ──────────────────────────────────────────
+
+describe('Attunement data', () => {
+  it('all attunements have required fields', async () => {
+    const { ATTUNEMENTS_DEF } = await import('@/lib/game/data/attunements');
+    for (const [id, def] of Object.entries(ATTUNEMENTS_DEF)) {
+      expect(def.id).toBe(id);
+      expect(def.name).toBeTruthy();
+      expect(def.desc).toBeTruthy();
+      expect(def.slot).toBeTruthy();
+      expect(def.icon).toBeTruthy();
+      expect(def.color).toBeTruthy();
+      expect(def.rawManaRegen).toBeGreaterThanOrEqual(0);
+      expect(def.conversionRate).toBeGreaterThanOrEqual(0);
+      expect(def.capabilities.length).toBeGreaterThan(0);
+      expect(def.skillCategories.length).toBeGreaterThan(0);
+    }
+  });
+
+  it('enchanter is unlocked by default', async () => {
+    const { ATTUNEMENTS_DEF } = await import('@/lib/game/data/attunements');
+    expect(ATTUNEMENTS_DEF.enchanter.unlocked).toBe(true);
+  });
+
+  it('invoker and fabricator are locked by default', async () => {
+    const { ATTUNEMENTS_DEF } = await import('@/lib/game/data/attunements');
+    expect(ATTUNEMENTS_DEF.invoker.unlocked).toBe(false);
+    expect(ATTUNEMENTS_DEF.fabricator.unlocked).toBe(false);
+  });
+
+  it('each attunement has a unique slot', async () => {
+    const { ATTUNEMENTS_DEF } = await import('@/lib/game/data/attunements');
+    const slots = Object.values(ATTUNEMENTS_DEF).map((d) => d.slot);
+    const uniqueSlots = new Set(slots);
+    expect(uniqueSlots.size).toBe(slots.length);
+  });
+});
+
+// ─── Test: XP curve ───────────────────────────────────────────────────────────
+
+describe('Attunement XP curve', () => {
+  it('level 1 requires 0 XP', async () => {
+    const { getAttunementXPForLevel } = await import('@/lib/game/data/attunements');
+    expect(getAttunementXPForLevel(1)).toBe(0);
+  });
+
+  it('level 2 requires 1000 XP', async () => {
+    const { getAttunementXPForLevel } = await import('@/lib/game/data/attunements');
+    expect(getAttunementXPForLevel(2)).toBe(1000);
+  });
+
+  it('XP requirements increase with level', async () => {
+    const { getAttunementXPForLevel } = await import('@/lib/game/data/attunements');
+    const xp2 = getAttunementXPForLevel(2);
+    const xp3 = getAttunementXPForLevel(3);
+    const xp4 = getAttunementXPForLevel(4);
+    expect(xp3).toBeGreaterThan(xp2);
+    expect(xp4).toBeGreaterThan(xp3);
+  });
+
+  it('MAX_ATTUNEMENT_LEVEL is 10', async () => {
+    const { MAX_ATTUNEMENT_LEVEL } = await import('@/lib/game/data/attunements');
+    expect(MAX_ATTUNEMENT_LEVEL).toBe(10);
+  });
+});
+
+// ─── Test: Attunement store interactions ──────────────────────────────────────
+
+describe('Attunement store interactions', () => {
+  it('addAttunementXP is callable', async () => {
+    const mockAddXP = await vi.fn();
+    mockAddXP('enchanter', 100);
+    expect(mockAddXP).toHaveBeenCalledWith('enchanter', 100);
+  });
+
+  it('debugUnlockAttunement is callable', async () => {
+    const mockUnlock = await vi.fn();
+    mockUnlock('invoker');
+    expect(mockUnlock).toHaveBeenCalledWith('invoker');
+  });
+
+  it('setAttunements is callable', async () => {
+    const mockSet = await vi.fn();
+    mockSet({ enchanter: { id: 'enchanter', active: true, level: 1, experience: 0 } });
+    expect(mockSet).toHaveBeenCalled();
+  });
+
+  it('resetAttunements is callable', async () => {
+    const mockReset = await vi.fn();
+    mockReset();
+    expect(mockReset).toHaveBeenCalledTimes(1);
+  });
+});
+
+// ─── Test: Slot name mapping ──────────────────────────────────────────────────
+
+describe('Attunement slot names', () => {
+  it('all slots used by attunements have display names', async () => {
+    const { ATTUNEMENTS_DEF, ATTUNEMENT_SLOT_NAMES } = await import('@/lib/game/data/attunements');
+    for (const def of Object.values(ATTUNEMENTS_DEF)) {
+      expect(ATTUNEMENT_SLOT_NAMES[def.slot]).toBeDefined();
+      expect(ATTUNEMENT_SLOT_NAMES[def.slot].length).toBeGreaterThan(0);
+    }
+  });
+});
+
+// ─── Test: File size limit ────────────────────────────────────────────────────
+
+describe('File size limits (400 lines max)', () => {
+  it('AttunementsTab.tsx is under 400 lines', async () => {
+    const fs = await import('fs');
+    const path = await import('path');
+    const filePath = path.join(__dirname, 'AttunementsTab.tsx');
+    const content = fs.readFileSync(filePath, 'utf-8');
+    const lines = content.split('\n').length;
+    expect(lines).toBeLessThan(400);
+  });
+});
diff --git a/src/components/game/tabs/AttunementsTab.tsx b/src/components/game/tabs/AttunementsTab.tsx
new file mode 100644
index 0000000..97c2813
--- /dev/null
+++ b/src/components/game/tabs/AttunementsTab.tsx
@@ -0,0 +1,221 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { useAttunementStore } from '@/lib/game/stores';
+import { ATTUNEMENTS_DEF, ATTUNEMENT_SLOT_NAMES, getAttunementXPForLevel, MAX_ATTUNEMENT_LEVEL } from '@/lib/game/data/attunements';
+import type { AttunementDef, AttunementState } from '@/lib/game/types';
+import { Card, CardContent } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+import { Progress } from '@/components/ui/progress';
+import { ScrollArea } from '@/components/ui/scroll-area';
+import { SectionHeader } from '@/components/ui/section-header';
+import { DebugName } from '@/components/game/debug/debug-context';
+import { fmt } from '@/lib/game/stores';
+
+// ─── Helpers ─────────────────────────────────────────────────────────────────
+
+function getXpForNextLevel(level: number): number {
+  if (level >= MAX_ATTUNEMENT_LEVEL) return 0;
+  return getAttunementXPForLevel(level + 1);
+}
+
+function getXpProgress(state: AttunementState): number {
+  const nextXp = getXpForNextLevel(state.level);
+  if (nextXp <= 0) return 100;
+  return Math.min(100, Math.round((state.experience / nextXp) * 100));
+}
+
+function isAttunementUnlocked(id: string, attunements: Record<string, AttunementState>): boolean {
+  return id in attunements;
+}
+
+// ─── Attunement Card ─────────────────────────────────────────────────────────
+
+interface AttunementCardProps {
+  def: AttunementDef;
+  state?: AttunementState;
+}
+
+function AttunementCard({ def, state }: AttunementCardProps) {
+  const unlocked = !!state;
+  const xpProgress = state ? getXpProgress(state) : 0;
+  const nextXp = state ? getXpForNextLevel(state.level) : 0;
+
+  return (
+    <Card className={`bg-gray-900/60 ${unlocked ? 'border-gray-700' : 'border-gray-800 opacity-60'}`}>
+      <CardContent className="p-4 space-y-3">
+        {/* Header */}
+        <div className="flex items-center justify-between">
+          <div className="flex items-center gap-2">
+            <span className="text-xl">{def.icon}</span>
+            <div>
+              <h3 className="font-medium text-gray-100">{def.name}</h3>
+              <p className="text-xs text-gray-500">
+                {ATTUNEMENT_SLOT_NAMES[def.slot] ?? def.slot}
+              </p>
+            </div>
+          </div>
+          {unlocked ? (
+            <Badge className="bg-teal-900/50 text-teal-300 text-xs">
+              Lv.{state.level}
+            </Badge>
+          ) : (
+            <Badge variant="outline" className="border-gray-700 text-gray-500 text-xs">
+              Locked
+            </Badge>
+          )}
+        </div>
+
+        {/* Description */}
+        <p className="text-xs text-gray-400 leading-relaxed">{def.desc}</p>
+
+        {/* XP Progress (unlocked only) */}
+        {unlocked && state && (
+          <div className="space-y-1">
+            <div className="flex items-center justify-between text-xs">
+              <span className="text-gray-500">XP Progress</span>
+              <span className="text-gray-400 font-mono">
+                {fmt(state.experience)} / {fmt(nextXp)}
+              </span>
+            </div>
+            <Progress value={xpProgress} className="h-2" />
+            {state.level >= MAX_ATTUNEMENT_LEVEL && (
+              <p className="text-xs text-amber-400 italic">Maximum level reached</p>
+            )}
+          </div>
+        )}
+
+        {/* Unlock condition (locked only) */}
+        {!unlocked && def.unlockCondition && (
+          <div className="text-xs text-gray-500 italic border-t border-gray-800 pt-2">
+            🔒 {def.unlockCondition}
+          </div>
+        )}
+
+        {/* Details grid */}
+        <div className="grid grid-cols-2 gap-2 text-xs border-t border-gray-800 pt-3">
+          <div>
+            <span className="text-gray-500">Mana Type</span>
+            <p className="text-gray-300 capitalize">
+              {def.primaryManaType ?? 'None (pact-based)'}
+            </p>
+          </div>
+          <div>
+            <span className="text-gray-500">Raw Regen</span>
+            <p className="text-gray-300">+{def.rawManaRegen}/hr</p>
+          </div>
+          {def.conversionRate > 0 && (
+            <div>
+              <span className="text-gray-500">Conversion</span>
+              <p className="text-gray-300">{def.conversionRate}/hr</p>
+            </div>
+          )}
+          <div>
+            <span className="text-gray-500">Status</span>
+            <p className={state?.active ? 'text-green-400' : 'text-gray-500'}>
+              {state?.active ? 'Active' : unlocked ? 'Inactive' : 'Locked'}
+            </p>
+          </div>
+        </div>
+
+        {/* Capabilities */}
+        <div className="border-t border-gray-800 pt-3">
+          <span className="text-xs text-gray-500 block mb-1.5">Capabilities</span>
+          <div className="flex flex-wrap gap-1">
+            {def.capabilities.map((cap) => (
+              <Badge
+                key={cap}
+                variant="outline"
+                className="border-gray-700 text-gray-400 text-[10px]"
+              >
+                {cap}
+              </Badge>
+            ))}
+          </div>
+        </div>
+
+        {/* Skill Categories */}
+        <div>
+          <span className="text-xs text-gray-500 block mb-1.5">Skill Categories</span>
+          <div className="flex flex-wrap gap-1">
+            {def.skillCategories.map((cat) => (
+              <Badge
+                key={cat}
+                variant="outline"
+                className="border-gray-700 text-gray-400 text-[10px]"
+              >
+                {cat}
+              </Badge>
+            ))}
+          </div>
+        </div>
+      </CardContent>
+    </Card>
+  );
+}
+
+// ─── Main Component ──────────────────────────────────────────────────────────
+
+export function AttunementsTab() {
+  const attunements = useAttunementStore((s) => s.attunements);
+  const [mounted, setMounted] = useState(false);
+
+  useEffect(() => {
+    setMounted(true);
+  }, []);
+
+  const allDefs = Object.values(ATTUNEMENTS_DEF);
+  const unlockedCount = allDefs.filter((d) => isAttunementUnlocked(d.id, attunements)).length;
+
+  if (!mounted) {
+    return (
+      <div className="flex items-center justify-center p-8 text-gray-500">
+        Loading attunements…
+      </div>
+    );
+  }
+
+  return (
+    <DebugName name="AttunementsTab">
+      <div className="space-y-4">
+        {/* Summary header */}
+        <Card className="bg-gray-900/60 border-gray-700">
+          <CardContent className="py-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <h2 className="text-lg font-semibold text-gray-100">Attunements</h2>
+                <p className="text-sm text-gray-400">
+                  Class-like abilities tied to body locations
+                </p>
+              </div>
+              <div className="text-right">
+                <div className="text-2xl font-bold text-teal-400">
+                  {unlockedCount}
+                  <span className="text-sm text-gray-500 font-normal">
+                    /{allDefs.length}
+                  </span>
+                </div>
+                <p className="text-xs text-gray-500">Unlocked</p>
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+
+        {/* Attunement cards */}
+        <ScrollArea className="h-[600px] pr-2">
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+            {allDefs.map((def) => (
+              <AttunementCard
+                key={def.id}
+                def={def}
+                state={attunements[def.id]}
+              />
+            ))}
+          </div>
+        </ScrollArea>
+      </div>
+    </DebugName>
+  );
+}
+
+AttunementsTab.displayName = 'AttunementsTab';
diff --git a/src/components/game/tabs/index.ts b/src/components/game/tabs/index.ts
index aed8750..8d0730d 100644
--- a/src/components/game/tabs/index.ts
+++ b/src/components/game/tabs/index.ts
@@ -6,3 +6,4 @@ export { SpellsTab } from './SpellsTab';
 export { StatsTab } from './StatsTab';
 export { DebugTab } from './DebugTab';
 export { AchievementsTab } from './AchievementsTab';
+export { AttunementsTab } from './AttunementsTab';