fix: app route path nesting (deploy/remove/templates), server.js fetchT import, lifetime license expiry, workflows path prefix

- routes/apps/index.js: mount sub-routers at '/' to avoid double-nesting (was /deploy/deploy, now /deploy)
- server.js: add fetchT import for workflow engine init
- license-manager.js: fix isExpired() for lifetime licenses (null expiresAt → always expired)
- src/app.js: add '/workflows' path prefix to prevent requirePremium gating all routes
- app-templates.js: fix 10 templates missing volumes/healthCheck
- routes/apps/index.js: add e.stack to error logging for better debugging

dashcaddy-api/license-manager.js

@@ -317,6 +317,9 @@ class LicenseManager {
    */
   isExpired() {
     if (!this.activation) return true;
+    // Lifetime licenses never expire
+    if (this.activation.lifetime || this.activation.durationDays === 0) return false;
+    if (!this.activation.expiresAt) return false; // No expiry set = lifetime
     return Date.now() > new Date(this.activation.expiresAt).getTime();
   }