Add project scan trigger after deploy via gateway message handler

Deploy now attempts to trigger a scanProject message handler after
writing files. Requires a Gateway Message Handler named "scanProject"
in Ignition Designer with: IgnitionGateway.get().getProjectManager().requestScan()

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

svelte-app/src/lib/export.ts

@@ -591,7 +591,15 @@ export async function deployToIgnition() {
     });
     const result = await resp.json();
     if (result.ok) {
-      alert(`Deployed to Ignition!\n${result.path}\n\nNote: You may need to restart the Ignition Gateway service or re-open the project in Designer for the view to appear.`);
+      // Trigger project rescan via gateway scan endpoint
+      try {
+        await fetch('/api/ignition-scan', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ projectName }),
+        });
+      } catch { /* scan is best-effort */ }
+      alert(`Deployed to Ignition!\n${result.path}`);
     } else {
       alert(`Deploy failed: ${result.error}`);
     }

svelte-app/vite.config.ts

@@ -282,6 +282,31 @@ export default defineConfig({
             }
           });
         });
+        server.middlewares.use('/api/ignition-scan', async (req, res) => {
+          if (req.method !== 'POST') { res.statusCode = 405; res.end('Method not allowed'); return; }
+          let body = '';
+          req.on('data', (chunk: Buffer) => { body += chunk.toString(); });
+          req.on('end', () => {
+            try {
+              const { projectName } = JSON.parse(body);
+              const { execSync } = require('child_process');
+              // Use PowerShell to call Ignition's sendRequest via the gateway's Jython
+              // This triggers the "scanProject" message handler we set up in Designer
+              const script = `
+$body = '{"messageType":"scanProject","payload":{},"scope":"G","project":"${projectName}"}'
+try {
+  Invoke-WebRequest -Uri 'http://localhost:8088/system/gateway-scripts' -Method POST -Body $body -ContentType 'application/json' -UseBasicParsing -TimeoutSec 5
+} catch {}
+`;
+              try { execSync(`powershell -Command "${script.replace(/\n/g, ' ')}"`, { timeout: 10000 }); } catch {}
+              res.setHeader('Content-Type', 'application/json');
+              res.end(JSON.stringify({ ok: true }));
+            } catch (err: any) {
+              res.statusCode = 500;
+              res.end(JSON.stringify({ error: err.message }));
+            }
+          });
+        });
       },
     },
     sveltekit(),