feat: 최종 리소스팩(선택 설치) + 약관 표시대상 추가

- pack.finalResourcepackPath 추가(/file/resourcepacks/outputs/, "."=없음, 기본 ".").
  편집기에 "최종 리소스팩 (.zip)" 입력 필드 추가.
- 약관 표시대상에 showInFinalResourcepack("최종 리소스팩에 표시") 3번째 토글 추가
  (스키마/시드/마이그레이션/편집기 체크박스·배지·저장 라우트, index.json 노출).
- 간편설치기 완료 단계: 기존 "직접 적용" 경고 제거 → 최종 리소스팩이 "."이 아니면
  "리소스팩을 설치하시겠습니까?" 예/아니요. 아니요→완료, 예→최종 리소스팩 약관
  (showInFinalResourcepack) 동의→/file/resourcepacks/outputs/ 에서 다운로드→완료.
  "." 이면 이 페이지 자체를 건너뜀.
- 0.4.15→0.4.16.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/server/routes/op.ts

@@ -535,6 +535,7 @@ opRouter.get('/op/agreement/:packName/:kind', requireAuth, async (req, res, next
       label: entry.label,
       showInInstaller: entry.showInInstaller,
       showInInstallerRp: entry.showInInstallerRp,
+      showInFinalResourcepack: entry.showInFinalResourcepack,
       content
     })
   } catch (error) {
@@ -562,10 +563,12 @@ opRouter.post('/op/agreement/:packName/:kind', requireAuth, async (req, res, nex
     if (
       typeof req.body?.showInInstaller === 'boolean'
       || typeof req.body?.showInInstallerRp === 'boolean'
+      || typeof req.body?.showInFinalResourcepack === 'boolean'
     ) {
       await setTermVisibility(packKey, kind, {
         showInInstaller: req.body.showInInstaller === true,
-        showInInstallerRp: req.body.showInInstallerRp === true
+        showInInstallerRp: req.body.showInInstallerRp === true,
+        showInFinalResourcepack: req.body.showInFinalResourcepack === true
       })
     }
     res.json({ ok: true })
@@ -593,6 +596,7 @@ opRouter.post('/op/dashboard/:packName', requireAuth, async (req, res, next) =>
       } as PackDefinition['platform'] & { loaderVersion?: string },
       modsFolder: pickFirstValue(req.body.modsFolder),
       resourcepackPath: pickFirstValue(req.body.resourcepackPath),
+      finalResourcepackPath: pickFirstValue(req.body.finalResourcepackPath),
       outputPackName: pickFirstValue(req.body.outputPackName),
       serverMinRam: Number(pickFirstValue(req.body.serverMinRam)),
       serverMaxRam: Number(pickFirstValue(req.body.serverMaxRam)),