[grade=B] DC-106: Caddyfile-as-code — visual reverse proxy builder API

3 endpoints:
- POST /api/v1/caddycode/generate — generate Caddyfile block from JSON config
  (supports: TLS, auth gate, CORS, headers, WebSocket, compression, strip prefix)
- POST /api/v1/caddycode/validate — validate Caddyfile syntax (brace balance,
  domain check, reverse_proxy presence)
- GET  /api/v1/caddycode/templates — 5 preset configs (simple, WebSocket,
  auth-gated, CORS API, subdirectory)

Frontend can present a visual form, send JSON, get back Caddyfile snippet.
1633 tests pass.

dashcaddy-api/src/app.js

@@ -66,6 +66,7 @@ const discoverAdoptRoutes = require('../routes/discover-adopt');
 const catalogRoutes = require('../routes/catalog');
 const wizardRoutes = require('../routes/wizard');
 const disasterRoutes = require('../routes/disaster-recovery');
+const caddycodeRoutes = require('../routes/caddycode');
 const configRoutes = require('../routes/config');
 const dnsRoutes = require('../routes/dns');
 const notificationRoutes = require('../routes/notifications');
@@ -641,6 +642,11 @@ async function createApp() {
     log: ctx.log,
     asyncHandler: ctx.asyncHandler,
   }));
+
+  // DC-106: Caddyfile-as-code — visual reverse proxy builder
+  apiRouter.use(caddycodeRoutes({
+    asyncHandler: ctx.asyncHandler,
+  }));
   apiRouter.use(updatesRoutes({
     updateManager: ctx.updateManager,
     selfUpdater: ctx.selfUpdater,