fix: implement fabricator attunement unlock condition (floor 20 guardian)

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

@@ -130,6 +130,15 @@ export function buildCombatCallbacks(params: BuildCombatCallbacksParams) {
           params.addLog('💜 The path of the Invoker is now available!');
         }
       }
+
+      // Auto-unlock Fabricator when the second guardian (floor 20) is defeated
+      if (floor === 20) {
+        const prestigeState = usePrestigeStore.getState();
+        const unlocked = useAttunementStore.getState().unlockAttunement('fabricator', prestigeState.defeatedGuardians);
+        if (unlocked) {
+          params.addLog('⚒️ The path of the Fabricator is now available!');
+        }
+      }
     } else if (floor % 5 === 0) {
       params.addLog('Floor ' + floor + ' cleared!');
     }