test mercenary recruitment boundaries

tools/integration-tests/test/turnCommandGeneralMatrix.integration.test.ts

@@ -1597,6 +1597,41 @@ const militaryPreparationBoundaryCases: MilitaryPreparationBoundaryCase[] = [
         args: { crewType: 1100, amount: 100 },
         completed: true,
     },
+    {
+        name: 'mercenary recruitment rejects one gold below its doubled rounded cost',
+        action: 'che_모병',
+        args: { crewType: 1100, amount: 100 },
+        actorPatch: { gold: 20 },
+        completed: false,
+    },
+    {
+        name: 'mercenary recruitment accepts its exact doubled rounded gold cost',
+        action: 'che_모병',
+        args: { crewType: 1100, amount: 100 },
+        actorPatch: { gold: 21 },
+        completed: true,
+    },
+    {
+        name: 'mercenary recruitment rejects one rice below maintenance plus command cost',
+        action: 'che_모병',
+        args: { crewType: 1100, amount: 100 },
+        actorPatch: { rice: 10 },
+        completed: false,
+    },
+    {
+        name: 'mercenary recruitment accepts exact maintenance plus command cost',
+        action: 'che_모병',
+        args: { crewType: 1100, amount: 100 },
+        actorPatch: { rice: 11 },
+        completed: true,
+    },
+    {
+        name: 'mercenary recruitment clamps the same crew type at leadership capacity',
+        action: 'che_모병',
+        args: { crewType: 1100, amount: 99_999 },
+        fixturePatches: { cities: { 3: { population: 200_000 } } },
+        completed: true,
+    },
     {
         name: 'equipment trade rejects an unknown item type',
         action: 'che_장비매매',