Implement OS detection and dynamic download link for latest app release

index.html

@@ -358,7 +358,7 @@
     </div>
     <div>
       <a href="#features" class="btn btn-secondary" style="border:none;">Features</a>
-      <a href="#pricing" class="btn btn-primary" style="padding: 0.5rem 1rem; font-size: 0.875rem;">Scarica App</a>
+      <a href="#" onclick="downloadLatest(event)" class="btn btn-primary" style="padding: 0.5rem 1rem; font-size: 0.875rem;">Scarica App</a>
     </div>
   </nav>
 
@@ -372,7 +372,7 @@
       <p>Piattaforma multi-agente in cui tu scegli dove salvare i dati e quale AI utilizzare. Crea workflow automatici in linguaggio naturale.</p>
       
       <div class="hero-buttons">
-        <a href="#" class="btn btn-primary">Scarica per Windows/Mac</a>
+        <a href="#" onclick="downloadLatest(event)" id="hero-download" class="btn btn-primary">Scarica per Windows/Linux</a>
         <a href="#features" class="btn btn-secondary">Scopri l'architettura</a>
       </div>
     </div>
@@ -584,6 +584,58 @@
         });
       });
     });
+
+    // --- Auto-detect OS & download latest release ---
+    const RELEASE_API = 'https://git.muticolturano.com/api/v1/repos/roberto/adiuva/releases/latest';
+    const RELEASES_PAGE = 'https://git.muticolturano.com/roberto/adiuva/releases';
+
+    function detectOS() {
+      const ua = navigator.userAgent || navigator.platform || '';
+      if (/Win/i.test(ua)) return 'windows';
+      if (/Linux/i.test(ua)) {
+        // Heuristic: most desktop Linux users on Debian/Ubuntu
+        return 'linux';
+      }
+      return 'unknown';
+    }
+
+    // Update hero button label based on OS
+    (function updateLabel() {
+      const os = detectOS();
+      const heroBtn = document.getElementById('hero-download');
+      if (heroBtn) {
+        if (os === 'windows') heroBtn.textContent = 'Scarica per Windows (.exe)';
+        else if (os === 'linux') heroBtn.textContent = 'Scarica per Linux (.deb)';
+      }
+    })();
+
+    async function downloadLatest(e) {
+      e.preventDefault();
+      try {
+        const res = await fetch(RELEASE_API);
+        if (!res.ok) throw new Error('API error');
+        const release = await res.json();
+        const assets = release.assets || [];
+        const os = detectOS();
+
+        let asset;
+        if (os === 'windows') {
+          asset = assets.find(a => a.name.endsWith('.exe'));
+        } else if (os === 'linux') {
+          asset = assets.find(a => a.name.endsWith('.deb')) ||
+                  assets.find(a => a.name.endsWith('.rpm'));
+        }
+
+        if (asset && asset.browser_download_url) {
+          window.location.href = asset.browser_download_url;
+        } else {
+          // Fallback: send to releases page
+          window.location.href = RELEASES_PAGE;
+        }
+      } catch {
+        window.location.href = RELEASES_PAGE;
+      }
+    }
   </script>
 
 </body>