fix: 불가침 제의 기한을 20년으로 제한

app/game-api/test/commandTable.test.ts

@@ -337,6 +337,27 @@ describe('buildTurnCommandTable', () => {
         }
     });
 
+    it('projects the Ref twenty-year non-aggression end-year window', async () => {
+        const table = await buildTurnCommandTable({
+            worldState: buildWorldState(),
+            general: buildGeneral(),
+            city: buildCity(),
+            nation: buildNation(),
+            nationGenerals: null,
+        });
+        const proposal = table.nation
+            .flatMap((group) => group.values)
+            .find((command) => command.key === 'che_불가침제의');
+
+        expect(proposal?.inputFields.find((field) => field.key === 'year')).toMatchObject({
+            kind: 'number',
+            min: 4,
+            max: 23,
+            defaultValue: 4,
+        });
+        expect(proposal?.inputFields.find((field) => field.key === 'month')).toMatchObject({ defaultValue: 1 });
+    });
+
     it('projects the Ref availability boundaries for force move, retirement, and resignation', async () => {
         const buildTable = (general: GeneralRow, nation: NationRow | null = buildNation()) =>
             buildTurnCommandTable({

app/game-api/test/router.test.ts

@@ -1462,6 +1462,28 @@ describe('appRouter', () => {
             })
         ).resolves.toMatchObject({ ok: true });
         expect(validTermWrites).toHaveLength(1);
+
+        const excessiveTermWrites: unknown[] = [];
+        const excessiveTermCaller = appRouter.createCaller(
+            buildContext({
+                state: buildWorldState(),
+                general,
+                nationTurnWrites: excessiveTermWrites,
+            })
+        );
+        await expect(
+            excessiveTermCaller.turns.reserved.setNation({
+                generalId: general.id,
+                turnIndex: 0,
+                action: 'che_불가침제의',
+                args: { destNationId: 2, year: 211, month: 1 },
+                expectedRevision: 0,
+            })
+        ).rejects.toMatchObject({
+            code: 'PRECONDITION_FAILED',
+            message: expect.stringContaining('기한은 210년 이하'),
+        });
+        expect(excessiveTermWrites).toHaveLength(0);
     });
 
     it('validates every bulk reservation permission before writing any turn', async () => {