Wave 1: add deps, crypto random utility, i18n helper, privacy fix, CI gates

- fix(deps): add zod and typescript to package.json
- feat(lib): add cryptographically secure random utility with TDD
- feat(lib): add client i18n helper with TDD
- fix(i18n): update privacy policy for crypto accuracy
- ci(deploy): add test and lint gates, fix SSH security

.github/workflows/deploy.yml

@@ -16,6 +16,8 @@ jobs:
           cache: npm
 
       - run: npm ci
+      - run: npm run lint
+      - run: npm run test
       - run: npm run build
 
       - name: Setup SSH key
@@ -28,6 +30,6 @@ jobs:
       - name: Deploy via rsync
         run: |
           rsync -avz --delete \
-            -e "ssh -i ~/.ssh/deploy_key -o StrictHostKeyChecking=no" \
+            -e "ssh -i ~/.ssh/deploy_key" \
             dist/ \
             ${{ secrets.DEPLOY_USER }}@${{ secrets.DEPLOY_HOST }}:~/www/randify.pro/