fix(golemancy): reconcile spec vs code discrepancies (issue #326)

- D-SLOT-01: Verified slot cap of 7 matches spec §2.2 (no change needed)
- D-COMB-03: Implement AoE damage distribution for Sand/Shadowglass frames
- D-COMB-01: Reconcile armor pierce formula to spire-combat spec §9.4 (dmg × (1 + armorPierce))
- D-CIRC-01: Fix Simple Logic Circuit summon cost from raw to earth mana
- D-ENCHANT-03: Add dual_attunement unlockRequirement to all golem enchantments
- D-CORE-01/02: Add Guardian Core runtime override mechanism for guardian-specific mana

Also increased test timeouts for module import tests that timeout in full suite runs.

src/components/game/tabs/DebugTab.test.ts

@@ -9,7 +9,7 @@ describe('DebugTab module structure', () => {
     const mod = await import('./DebugTab');
     expect(mod.DebugTab).toBeDefined();
     expect(typeof mod.DebugTab).toBe('function');
-  });
+  }, 30000);
 
   it('exports GameStateDebugSection', async () => {
     const mod = await import('./DebugTab/GameStateDebugSection');