Merge branch 'claude/activate-smime-plugin' into 'dev'

feat(smime): actually install the audited S/MIME plugin in real builds

See merge request gitlab-instance-b9b5cf2f/vncmail-plus!5

.gitignore

@@ -62,10 +62,14 @@ next-env.d.ts
 # k8s deploy secrets (create from the matching overlay's secret.example.yaml)
 /deploy/k8s/overlays/*/secret.yaml
 
-# S/MIME plugin build output (rebuild with: cd vnc/plugins/smime && npm run build)
-vnc/plugins/smime/node_modules/
-vnc/plugins/smime/dist/
+# First-party plugin build output (rebuild with: npm run build:plugins).
+# vnc/plugins/build/ is the staging dir the server installs from at startup
+# (see lib/admin/bundled-plugins.ts) - built, never committed.
+vnc/plugins/build/
+vnc/plugins/*/node_modules/
+vnc/plugins/*/dist/
 vnc/plugins/smime/smime-vnc.zip
+vnc/plugins/smime/smime.zip
 
 # macOS
 .DS_Store