feat: Complete Golemancy System Redesign - Component-Based Construction

- Fix Crystal-Steel Hybrid Frame unlock to require Fabricator 5 + Enchanter 5 (dual attunement)
- Fix golem slot calculation: pass fabricator level to summon logic, cap at 7 (base 5 + discipline bonus)
- Integrate discipline golemCapacity bonus into slot calculation in combat-descent-actions and golem-combat pipeline
- Update GolemancyTab UI to show discipline slot bonus in header
- Add comprehensive test suite: golemancy-data.test.ts (344 lines) and golemancy-combat.test.ts (313 lines)
- All 1009 tests pass across 52 test files

src/lib/game/data/golems/frames.ts

@@ -126,9 +126,9 @@ const CRYSTAL_STEEL_HYBRID_FRAME: FrameDefinition = {
   specialEffect: 'guardianConstruct',
   summonCost: [elemCost('crystal', 20), elemCost('metal', 15), rawCost(15)],
   unlockRequirement: {
-    type: 'attunement_level',
-    attunement: 'fabricator',
-    level: 5,
+    type: 'dual_attunement',
+    attunements: ['fabricator', 'enchanter'],
+    levels: [5, 5],
   },
 };
 

src/lib/game/data/golems/golemancy-data.test.ts

@@ -0,0 +1,344 @@
+// ─── Golemancy Data Layer Tests ───────────────────────────────────────────────
+// Tests component registries, unlock requirements, computed stats, and slot limits.
+
+import { describe, it, expect } from 'vitest';
+import {
+  CORES, FRAMES, MIND_CIRCUITS, GOLEM_ENCHANTMENTS,
+  ALL_CORES, ALL_FRAMES, ALL_MIND_CIRCUITS, ALL_GOLEM_ENCHANTMENTS,
+} from '@/lib/game/data/golems';
+import {
+  getGolemSlots,
+  isComponentUnlocked,
+  computeGolemStats,
+  canAffordGolemDesign,
+  createActiveGolem,
+} from '@/lib/game/data/golems/utils';
+import type { GolemDesign } from '@/lib/game/data/golems/types';
+
+// ─── Helper ───────────────────────────────────────────────────────────────────
+
+function makeDesign(coreId: string, frameId: string, circuitId: string, enchantIds: string[] = []): GolemDesign {
+  return {
+    id: `test_${coreId}_${frameId}_${circuitId}`,
+    name: `Test ${coreId} ${frameId}`,
+    core: CORES[coreId],
+    frame: FRAMES[frameId],
+    mindCircuit: MIND_CIRCUITS[circuitId],
+    enchantments: enchantIds.map(id => GOLEM_ENCHANTMENTS[id]).filter(Boolean),
+    selectedManaTypes: [],
+    selectedSpells: [],
+  };
+}
+
+// ─── Component Registry Completeness ──────────────────────────────────────────
+
+describe('Component registry completeness', () => {
+  it('has exactly 4 cores', () => {
+    expect(ALL_CORES.length).toBe(4);
+    expect(Object.keys(CORES).length).toBe(4);
+  });
+
+  it('has exactly 7 frames', () => {
+    expect(ALL_FRAMES.length).toBe(7);
+    expect(Object.keys(FRAMES).length).toBe(7);
+  });
+
+  it('has exactly 4 mind circuits', () => {
+    expect(ALL_MIND_CIRCUITS.length).toBe(4);
+    expect(Object.keys(MIND_CIRCUITS).length).toBe(4);
+  });
+
+  it('has exactly 8 enchantments', () => {
+    expect(ALL_GOLEM_ENCHANTMENTS.length).toBe(8);
+    expect(Object.keys(GOLEM_ENCHANTMENTS).length).toBe(8);
+  });
+
+  it('all cores have unique tiers 1-4', () => {
+    const tiers = ALL_CORES.map(c => c.tier).sort();
+    expect(tiers).toEqual([1, 2, 3, 4]);
+  });
+
+  it('all frames have valid special effects', () => {
+    const validSpecials = new Set(['none', 'aoe', 'slow', 'guardianConstruct']);
+    for (const frame of ALL_FRAMES) {
+      expect(validSpecials.has(frame.specialEffect)).toBe(true);
+    }
+  });
+
+  it('all circuits have valid behaviors', () => {
+    const validBehaviors = new Set(['basicOnly', 'castSpell1', 'alternate2', 'cycleAll']);
+    for (const circuit of ALL_MIND_CIRCUITS) {
+      expect(validBehaviors.has(circuit.behavior)).toBe(true);
+    }
+  });
+});
+
+// ─── Unlock Requirements ──────────────────────────────────────────────────────
+
+describe('Unlock requirements', () => {
+  it('basic core requires Fabricator 2', () => {
+    const req = CORES.basic.unlockRequirement;
+    expect(req.type).toBe('attunement_level');
+    expect(isComponentUnlocked(req, { fabricator: { active: true, level: 2 } }, [], [])).toBe(true);
+    expect(isComponentUnlocked(req, { fabricator: { active: true, level: 1 } }, [], [])).toBe(false);
+  });
+
+  it('intermediate core requires dual attunement Fabricator 4 + Enchanter 2', () => {
+    const req = CORES.intermediate.unlockRequirement;
+    expect(req.type).toBe('dual_attunement');
+    expect(isComponentUnlocked(req, { fabricator: { active: true, level: 4 }, enchanter: { active: true, level: 2 } }, [], [])).toBe(true);
+    expect(isComponentUnlocked(req, { fabricator: { active: true, level: 4 }, enchanter: { active: true, level: 1 } }, [], [])).toBe(false);
+  });
+
+  it('guardian core requires guardian pact', () => {
+    const req = CORES.guardian.unlockRequirement;
+    expect(req.type).toBe('guardian_pact');
+    expect(isComponentUnlocked(req, { invoker: { active: true, level: 5 }, fabricator: { active: true, level: 5 } }, [], [1])).toBe(true);
+    expect(isComponentUnlocked(req, { invoker: { active: true, level: 5 }, fabricator: { active: true, level: 5 } }, [], [])).toBe(false);
+  });
+
+  it('crystalSteelHybrid frame requires Fabricator 5 + Enchanter 5', () => {
+    const req = FRAMES.crystalSteelHybrid.unlockRequirement;
+    expect(req.type).toBe('dual_attunement');
+    expect(isComponentUnlocked(req, { fabricator: { active: true, level: 5 }, enchanter: { active: true, level: 5 } }, [], [])).toBe(true);
+    expect(isComponentUnlocked(req, { fabricator: { active: true, level: 5 }, enchanter: { active: true, level: 4 } }, [], [])).toBe(false);
+  });
+
+  it('sand frame requires sand mana unlocked', () => {
+    const req = FRAMES.sand.unlockRequirement;
+    expect(req.type).toBe('mana_unlocked');
+    expect(isComponentUnlocked(req, {}, ['sand'], [])).toBe(true);
+    expect(isComponentUnlocked(req, {}, ['earth'], [])).toBe(false);
+  });
+
+  it('guardian circuit requires Invoker 5 + Fabricator 5', () => {
+    const req = MIND_CIRCUITS.guardian.unlockRequirement;
+    expect(req.type).toBe('dual_attunement');
+    expect(isComponentUnlocked(req, { invoker: { active: true, level: 5 }, fabricator: { active: true, level: 5 } }, [], [])).toBe(true);
+    expect(isComponentUnlocked(req, { invoker: { active: true, level: 4 }, fabricator: { active: true, level: 5 } }, [], [])).toBe(false);
+  });
+});
+
+// ─── Computed Stats ───────────────────────────────────────────────────────────
+
+describe('Computed stats', () => {
+  it('basic earth golem has correct stats', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const stats = computeGolemStats(design);
+
+    expect(stats.manaCapacity).toBe(50);
+    expect(stats.manaRegen).toBe(0.5);
+    expect(stats.maxRoomDuration).toBe(3);
+    expect(stats.baseDamage).toBe(6);
+    expect(stats.attackSpeed).toBe(1.2);
+    expect(stats.armorPierce).toBe(0.05);
+    expect(stats.magicAffinity).toBe(0.3);
+    expect(stats.aoeTargets).toBe(1);
+    expect(stats.spellSlots).toBe(0);
+    expect(stats.enchantmentCapacity).toBeCloseTo(0.3);
+    expect(stats.specialEffect).toBe('none');
+    expect(stats.availableManaTypes).toEqual(['earth']);
+  });
+
+  it('advanced steel golem with advanced circuit', () => {
+    const design = makeDesign('advanced', 'steel', 'advanced');
+    const stats = computeGolemStats(design);
+
+    expect(stats.manaCapacity).toBe(200);
+    expect(stats.manaRegen).toBe(3.0);
+    expect(stats.maxRoomDuration).toBe(5);
+    expect(stats.baseDamage).toBe(18);
+    expect(stats.attackSpeed).toBe(1.6);
+    expect(stats.armorPierce).toBe(0.5);
+    expect(stats.magicAffinity).toBe(0.5);
+    expect(stats.spellSlots).toBe(2);
+    expect(stats.enchantmentCapacity).toBeCloseTo(1.0);
+  });
+
+  it('guardian crystalSteelHybrid golem with guardian circuit', () => {
+    const design = makeDesign('guardian', 'crystalSteelHybrid', 'guardian');
+    const stats = computeGolemStats(design);
+
+    expect(stats.manaCapacity).toBe(500);
+    expect(stats.manaRegen).toBe(10.0);
+    expect(stats.maxRoomDuration).toBe(8);
+    expect(stats.baseDamage).toBe(22);
+    expect(stats.attackSpeed).toBe(2.8);
+    expect(stats.armorPierce).toBe(0.7);
+    expect(stats.magicAffinity).toBe(1.0);
+    expect(stats.spellSlots).toBe(4);
+    expect(stats.enchantmentCapacity).toBeCloseTo(3.0);
+    expect(stats.specialEffect).toBe('guardianConstruct');
+  });
+
+  it('enchantments add to summon cost', () => {
+    const designNoEnch = makeDesign('basic', 'earth', 'simple');
+    const designWithEnch = makeDesign('basic', 'earth', 'simple', ['sword_fire', 'sword_frost']);
+
+    const statsNoEnch = computeGolemStats(designNoEnch);
+    const statsWithEnch = computeGolemStats(designWithEnch);
+
+    expect(statsWithEnch.totalSummonCost.length).toBeGreaterThan(statsNoEnch.totalSummonCost.length);
+  });
+
+  it('upkeep = core.manaRegen * 2 per hour', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const stats = computeGolemStats(design);
+
+    expect(stats.upkeepCostPerHour.length).toBe(1);
+    expect(stats.upkeepCostPerHour[0].amount).toBe(1.0);
+    expect(stats.upkeepCostPerHour[0].element).toBe('earth');
+  });
+
+  it('selected mana types override core defaults', () => {
+    const design = makeDesign('intermediate', 'earth', 'simple');
+    design.selectedManaTypes = ['fire', 'water'];
+    const stats = computeGolemStats(design);
+
+    expect(stats.availableManaTypes).toEqual(['fire', 'water']);
+  });
+});
+
+// ─── Golem Slot Calculation ───────────────────────────────────────────────────
+
+describe('Golem slot calculation', () => {
+  it('returns 0 for fabricator level < 2', () => {
+    expect(getGolemSlots(0)).toBe(0);
+    expect(getGolemSlots(1)).toBe(0);
+  });
+
+  it('scales as floor(level/2)', () => {
+    expect(getGolemSlots(2)).toBe(1);
+    expect(getGolemSlots(3)).toBe(1);
+    expect(getGolemSlots(4)).toBe(2);
+    expect(getGolemSlots(5)).toBe(2);
+    expect(getGolemSlots(6)).toBe(3);
+    expect(getGolemSlots(7)).toBe(3);
+    expect(getGolemSlots(8)).toBe(4);
+    expect(getGolemSlots(9)).toBe(4);
+    expect(getGolemSlots(10)).toBe(5);
+  });
+
+  it('total slots capped at 7 (base + discipline bonus)', () => {
+    const baseSlots = getGolemSlots(10);
+    const discBonus = 2;
+    const total = Math.min(7, baseSlots + discBonus);
+    expect(total).toBe(7);
+  });
+
+  it('total slots cannot exceed 7 even with high fabricator level', () => {
+    const baseSlots = getGolemSlots(20);
+    const discBonus = 2;
+    const total = Math.min(7, baseSlots + discBonus);
+    expect(total).toBe(7);
+  });
+});
+
+// ─── Affordability ────────────────────────────────────────────────────────────
+
+describe('canAffordGolemDesign', () => {
+  it('returns true when player has enough resources', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const result = canAffordGolemDesign(design, 100, {
+      earth: { current: 50, max: 100, unlocked: true },
+    });
+    expect(result.canAfford).toBe(true);
+  });
+
+  it('returns false when raw mana insufficient', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const result = canAffordGolemDesign(design, 3, {
+      earth: { current: 50, max: 100, unlocked: true },
+    });
+    expect(result.canAfford).toBe(false);
+    expect(result.missing).toContain('raw mana');
+  });
+
+  it('returns false when element mana insufficient', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const result = canAffordGolemDesign(design, 100, {
+      earth: { current: 5, max: 100, unlocked: true },
+    });
+    expect(result.canAfford).toBe(false);
+    expect(result.missing).toContain('earth');
+  });
+
+  it('returns false when element not unlocked', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const result = canAffordGolemDesign(design, 100, {});
+    expect(result.canAfford).toBe(false);
+    expect(result.missing).toContain('not unlocked');
+  });
+});
+
+// ─── Active Golem Creation ────────────────────────────────────────────────────
+
+describe('createActiveGolem', () => {
+  it('creates active golem with correct initial state', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const active = createActiveGolem(design, 5);
+
+    expect(active.designId).toBe(design.id);
+    expect(active.summonedFloor).toBe(5);
+    expect(active.attackProgress).toBe(0);
+    expect(active.roomsRemaining).toBe(3);
+    expect(active.currentMana).toBe(50);
+    expect(active.spellCastIndex).toBe(0);
+  });
+
+  it('guardian golem starts with full mana', () => {
+    const design = makeDesign('guardian', 'crystalSteelHybrid', 'guardian');
+    const active = createActiveGolem(design, 10);
+
+    expect(active.currentMana).toBe(500);
+    expect(active.roomsRemaining).toBe(8);
+  });
+});
+
+// ─── Guardian Construct Requirements ──────────────────────────────────────────
+
+describe('Guardian Construct requirements', () => {
+  it('guardian core has tier 4', () => {
+    expect(CORES.guardian.tier).toBe(4);
+  });
+
+  it('crystalSteelHybrid frame has guardianConstruct special effect', () => {
+    expect(FRAMES.crystalSteelHybrid.specialEffect).toBe('guardianConstruct');
+  });
+
+  it('guardian circuit has cycleAll behavior', () => {
+    expect(MIND_CIRCUITS.guardian.behavior).toBe('cycleAll');
+  });
+
+  it('guardian circuit has 4 spell slots', () => {
+    expect(MIND_CIRCUITS.guardian.spellSlots).toBe(4);
+  });
+});
+
+// ─── All Component Combinations ───────────────────────────────────────────────
+
+describe('All component combinations', () => {
+  it('every core+frame+circuit combination produces valid stats', () => {
+    for (const core of ALL_CORES) {
+      for (const frame of ALL_FRAMES) {
+        for (const circuit of ALL_MIND_CIRCUITS) {
+          const design = makeDesign(core.id, frame.id, circuit.id);
+          const stats = computeGolemStats(design);
+
+          expect(stats.manaCapacity).toBeGreaterThan(0);
+          expect(stats.manaRegen).toBeGreaterThan(0);
+          expect(stats.maxRoomDuration).toBeGreaterThan(0);
+          expect(stats.baseDamage).toBeGreaterThan(0);
+          expect(stats.attackSpeed).toBeGreaterThan(0);
+          expect(stats.armorPierce).toBeGreaterThanOrEqual(0);
+          expect(stats.magicAffinity).toBeGreaterThanOrEqual(0);
+          expect(stats.aoeTargets).toBeGreaterThanOrEqual(1);
+          expect(stats.spellSlots).toBeGreaterThanOrEqual(0);
+          expect(stats.enchantmentCapacity).toBeGreaterThan(0);
+          expect(stats.totalSummonCost.length).toBeGreaterThan(0);
+          expect(stats.upkeepCostPerHour.length).toBeGreaterThan(0);
+        }
+      }
+    }
+  });
+});

src/lib/game/stores/combat-descent-actions.ts

@@ -8,6 +8,8 @@ import { getGuardianForFloor } from '../data/guardian-encounters';
 import { usePrestigeStore } from './prestigeStore';
 import { useManaStore } from './manaStore';
 import { summonGolemsOnRoomEntry } from './golem-combat-actions';
+import { computeDisciplineEffects } from '../effects/discipline-effects';
+import { useAttunementStore } from './attunementStore';
 import {
   onEnterLibraryRoom,
   onEnterRecoveryRoom,
@@ -145,6 +147,11 @@ function summonGolemsForRoom(get: GetFn, set: SetFn): void {
   const loadout = s.golemancy?.golemLoadout ?? [];
   if (loadout.length === 0) return;
 
+  const attStore = useAttunementStore.getState();
+  const fabLevel = attStore.attunements?.fabricator?.level ?? 0;
+  const discEffects = computeDisciplineEffects();
+  const discBonus = Math.floor(discEffects.bonuses.golemCapacity || 0);
+
   const currentActiveGolems = s.golemancy?.activeGolems ?? [];
   const summonResult = summonGolemsOnRoomEntry(
     loadout,
@@ -152,7 +159,8 @@ function summonGolemsForRoom(get: GetFn, set: SetFn): void {
     manaState.elements,
     s.currentFloor,
     currentActiveGolems,
-    0, // discBonus — computed in pipeline, not here
+    discBonus,
+    fabLevel,
   );
 
   if (summonResult.logMessages.length > 0) {

src/lib/game/stores/golem-combat-actions.ts

@@ -48,6 +48,7 @@ export function summonGolemsOnRoomEntry(
   currentFloor: number,
   existingActiveGolems: RuntimeActiveGolem[],
   disciplineSlotsBonus: number,
+  fabricatorLevel: number,
 ): {
   rawMana: number;
   elements: Record<string, { current: number; max: number; unlocked: boolean }>;
@@ -60,12 +61,14 @@ export function summonGolemsOnRoomEntry(
   const logMessages: string[] = [];
 
   const activeCount = newActiveGolems.length;
+  const baseSlots = getGolemSlots(fabricatorLevel);
+  const totalSlots = Math.min(7, baseSlots + disciplineSlotsBonus);
 
   for (const entry of loadout) {
     if (!entry.enabled) continue;
 
-    // Check slot availability
-    if (newActiveGolems.length >= activeCount + disciplineSlotsBonus + getGolemSlots(0)) {
+    // Check slot availability (max 7 total per AC-1)
+    if (newActiveGolems.length >= totalSlots) {
       logMessages.push('No golem slots available');
       break;
     }

src/lib/game/stores/golemancy-combat.test.ts

@@ -0,0 +1,313 @@
+// ─── Golemancy Combat Tests ────────────────────────────────────────────────────
+// Tests the golem combat actions: summoning, maintenance, mana regen, room duration.
+
+import { describe, it, expect, beforeEach } from 'vitest';
+import {
+  CORES, FRAMES, MIND_CIRCUITS, GOLEM_ENCHANTMENTS,
+} from '@/lib/game/data/golems';
+import {
+  computeGolemStats,
+  createActiveGolem,
+} from '@/lib/game/data/golems/utils';
+import type { GolemDesign, SerializedDesign } from '@/lib/game/data/golems/types';
+import {
+  summonGolemsOnRoomEntry,
+  processGolemMaintenance,
+  processGolemManaRegen,
+  countdownGolemRoomDuration,
+} from '@/lib/game/stores/golem-combat-actions';
+
+// ─── Helpers ──────────────────────────────────────────────────────────────────
+
+function makeDesign(coreId: string, frameId: string, circuitId: string, enchantIds: string[] = []): GolemDesign {
+  return {
+    id: `test_${coreId}_${frameId}_${circuitId}`,
+    name: `Test ${coreId} ${frameId}`,
+    core: CORES[coreId],
+    frame: FRAMES[frameId],
+    mindCircuit: MIND_CIRCUITS[circuitId],
+    enchantments: enchantIds.map(id => GOLEM_ENCHANTMENTS[id]).filter(Boolean),
+    selectedManaTypes: [],
+    selectedSpells: [],
+  };
+}
+
+function makeSerialized(design: GolemDesign): SerializedDesign {
+  return {
+    id: design.id,
+    name: design.name,
+    coreId: design.core.id,
+    frameId: design.frame.id,
+    mindCircuitId: design.mindCircuit.id,
+    enchantmentIds: design.enchantments.map(e => e.id),
+    selectedManaTypes: design.selectedManaTypes,
+    selectedSpells: design.selectedSpells,
+  };
+}
+
+// ─── Summon Golems on Room Entry ──────────────────────────────────────────────
+
+describe('summonGolemsOnRoomEntry', () => {
+  const emptyElements: Record<string, { current: number; max: number; unlocked: boolean }> = {
+    earth: { current: 1000, max: 1000, unlocked: true },
+    crystal: { current: 1000, max: 1000, unlocked: true },
+    fire: { current: 1000, max: 1000, unlocked: true },
+  };
+
+  it('summons affordable golems from loadout', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const loadout = [{
+      designId: design.id,
+      design: makeSerialized(design) as any,
+      enabled: true,
+    }];
+
+    const result = summonGolemsOnRoomEntry(
+      loadout, 1000, emptyElements, 1, [], 0, 2,
+    );
+
+    expect(result.activeGolems.length).toBe(1);
+    expect(result.rawMana).toBeLessThan(1000);
+  });
+
+  it('skips unenabled designs', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const loadout = [{
+      designId: design.id,
+      design: makeSerialized(design) as any,
+      enabled: false,
+    }];
+
+    const result = summonGolemsOnRoomEntry(
+      loadout, 1000, emptyElements, 1, [], 0, 2,
+    );
+
+    expect(result.activeGolems.length).toBe(0);
+  });
+
+  it('skips designs that cannot be afforded', () => {
+    const design = makeDesign('guardian', 'crystalSteelHybrid', 'guardian');
+    const loadout = [{
+      designId: design.id,
+      design: makeSerialized(design) as any,
+      enabled: true,
+    }];
+
+    const result = summonGolemsOnRoomEntry(
+      loadout, 0, emptyElements, 1, [], 0, 10,
+    );
+
+    expect(result.activeGolems.length).toBe(0);
+    expect(result.logMessages.some(m => m.includes('Not enough mana'))).toBe(true);
+  });
+
+  it('respects slot limit (max 7)', () => {
+    const designs = Array.from({ length: 10 }, (_, i) => {
+      const d = makeDesign('basic', 'earth', 'simple');
+      d.id = `design_${i}`;
+      return d;
+    });
+
+    const loadout = designs.map(d => ({
+      designId: d.id,
+      design: makeSerialized(d) as any,
+      enabled: true,
+    }));
+
+    const result = summonGolemsOnRoomEntry(
+      loadout, 10000, emptyElements, 1, [], 0, 10,
+    );
+
+    expect(result.activeGolems.length).toBeLessThanOrEqual(7);
+  });
+
+  it('does not duplicate already active golems', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const active = createActiveGolem(design, 1);
+
+    const loadout = [{
+      designId: design.id,
+      design: makeSerialized(design) as any,
+      enabled: true,
+    }];
+
+    const result = summonGolemsOnRoomEntry(
+      loadout, 1000, emptyElements, 1, [active], 0, 2,
+    );
+
+    expect(result.activeGolems.length).toBe(1);
+  });
+
+  it('passes fabricator level to slot calculation', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const loadout = [{
+      designId: design.id,
+      design: makeSerialized(design) as any,
+      enabled: true,
+    }];
+
+    // With fabricator level 2, should have 1 base slot
+    const result = summonGolemsOnRoomEntry(
+      loadout, 1000, emptyElements, 1, [], 0, 2,
+    );
+
+    expect(result.activeGolems.length).toBe(1);
+  });
+});
+
+// ─── Golem Maintenance ───────────────────────────────────────────────────────
+
+describe('processGolemMaintenance', () => {
+  it('maintains golem when upkeep is affordable', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const active = createActiveGolem(design, 1);
+
+    const elements: Record<string, { current: number; max: number; unlocked: boolean }> = {
+      earth: { current: 1000, max: 1000, unlocked: true },
+    };
+
+    const result = processGolemMaintenance(
+      [active],
+      { [design.id]: makeSerialized(design) },
+      1000,
+      elements,
+    );
+
+    expect(result.maintainedGolems.length).toBe(1);
+  });
+
+  it('dismisses golem when upkeep cannot be paid', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const active = createActiveGolem(design, 1);
+
+    const elements: Record<string, { current: number; max: number; unlocked: boolean }> = {
+      earth: { current: 0, max: 1000, unlocked: true },
+    };
+
+    const result = processGolemMaintenance(
+      [active],
+      { [design.id]: makeSerialized(design) },
+      1000,
+      elements,
+    );
+
+    expect(result.maintainedGolems.length).toBe(0);
+    expect(result.logMessages.some(m => m.includes('dismissed'))).toBe(true);
+  });
+
+  it('maintains multiple golems independently', () => {
+    const design1 = makeDesign('basic', 'earth', 'simple');
+    const design2 = makeDesign('basic', 'earth', 'simple');
+    design2.id = 'test_design2';
+    const active1 = createActiveGolem(design1, 1);
+    const active2 = createActiveGolem(design2, 1);
+
+    const elements: Record<string, { current: number; max: number; unlocked: boolean }> = {
+      earth: { current: 1000, max: 1000, unlocked: true },
+    };
+
+    const result = processGolemMaintenance(
+      [active1, active2],
+      { [design1.id]: makeSerialized(design1), [design2.id]: makeSerialized(design2) },
+      1000,
+      elements,
+    );
+
+    expect(result.maintainedGolems.length).toBe(2);
+  });
+});
+
+// ─── Golem Mana Regen ────────────────────────────────────────────────────────
+
+describe('processGolemManaRegen', () => {
+  it('regenerates golem mana each tick', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const active = createActiveGolem(design, 1);
+    active.currentMana = 0;
+
+    const result = processGolemManaRegen(
+      [active],
+      { [design.id]: makeSerialized(design) },
+    );
+
+    expect(result[0].currentMana).toBeGreaterThan(0);
+    expect(result[0].currentMana).toBeLessThanOrEqual(design.core.manaCapacity);
+  });
+
+  it('does not exceed mana capacity', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const active = createActiveGolem(design, 1);
+    active.currentMana = design.core.manaCapacity;
+
+    const result = processGolemManaRegen(
+      [active],
+      { [design.id]: makeSerialized(design) },
+    );
+
+    expect(result[0].currentMana).toBe(design.core.manaCapacity);
+  });
+
+  it('handles empty active golems array', () => {
+    const result = processGolemManaRegen([], {});
+    expect(result.length).toBe(0);
+  });
+});
+
+// ─── Room Duration Countdown ──────────────────────────────────────────────────
+
+describe('countdownGolemRoomDuration', () => {
+  it('decrements rooms remaining', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const active = createActiveGolem(design, 1);
+    active.roomsRemaining = 3;
+
+    const result = countdownGolemRoomDuration(
+      [active],
+      { [design.id]: makeSerialized(design) },
+    );
+
+    expect(result.remainingGolems.length).toBe(1);
+    expect(result.remainingGolems[0].roomsRemaining).toBe(2);
+    expect(result.dismissedNames.length).toBe(0);
+  });
+
+  it('dismisses golem when rooms remaining reaches 0', () => {
+    const design = makeDesign('basic', 'earth', 'simple');
+    const active = createActiveGolem(design, 1);
+    active.roomsRemaining = 1;
+
+    const result = countdownGolemRoomDuration(
+      [active],
+      { [design.id]: makeSerialized(design) },
+    );
+
+    expect(result.remainingGolems.length).toBe(0);
+    expect(result.dismissedNames.length).toBe(1);
+    expect(result.logMessages.some(m => m.includes('faded'))).toBe(true);
+  });
+
+  it('handles multiple golems with mixed remaining rooms', () => {
+    const design1 = makeDesign('basic', 'earth', 'simple');
+    const design2 = makeDesign('basic', 'earth', 'simple');
+    design2.id = 'test_design2';
+    const active1 = createActiveGolem(design1, 1);
+    const active2 = createActiveGolem(design2, 1);
+    active1.roomsRemaining = 2;
+    active2.roomsRemaining = 1;
+
+    const result = countdownGolemRoomDuration(
+      [active1, active2],
+      { [design1.id]: makeSerialized(design1), [design2.id]: makeSerialized(design2) },
+    );
+
+    expect(result.remainingGolems.length).toBe(1);
+    expect(result.remainingGolems[0].designId).toBe(design1.id);
+    expect(result.dismissedNames.length).toBe(1);
+  });
+
+  it('handles empty active golems array', () => {
+    const result = countdownGolemRoomDuration([], {});
+    expect(result.remainingGolems.length).toBe(0);
+    expect(result.dismissedNames.length).toBe(0);
+  });
+});

src/lib/game/stores/pipelines/golem-combat.ts

@@ -118,5 +118,6 @@ export function processGolemRoomEntry(
     currentFloor,
     cs.golemancy.activeGolems as any[],
     discBonus,
+    fabLevel,
   );
 }