feat(ci): add GitLab CE + Jenkins LTS one-click generators

Add 'ci' category with two service generators (gitlab, jenkins),
following project conventions (quoted heredocs, PKG_INSTALL, bash_header,
warnings + post_steps). Jenkins WAR URLs pinned in a class dict to
avoid 404s. app.py + generators/__init__.py updated to register.

generators/__init__.py

@@ -41,6 +41,7 @@ category_labels = {
     "network":     "网络工具",
     "monitoring":  "监控告警",
     "security":    "安全加固",
+    "ci":          "CI/CD 平台",
 }
 
 category_icons = {
@@ -52,6 +53,7 @@ category_icons = {
     "network":     "🌐",
     "monitoring":  "📊",
     "security":    "🔒",
+    "ci":          "🚀",
 }