Auto-install protocol handler when exe run without args

agent/src/install.rs

@@ -301,6 +301,51 @@ pub fn install(force_user_install: bool) -> Result<()> {
     Ok(())
 }
 
+/// Check if the guruconnect:// protocol handler is registered
+#[cfg(windows)]
+pub fn is_protocol_handler_registered() -> bool {
+    use windows::Win32::System::Registry::{
+        RegOpenKeyExW, RegCloseKey, HKEY_CLASSES_ROOT, HKEY_CURRENT_USER, KEY_READ,
+    };
+
+    unsafe {
+        // Check system-wide registration (HKCR\guruconnect)
+        let mut key = HKEY::default();
+        let key_path = to_wide("guruconnect");
+        if RegOpenKeyExW(
+            HKEY_CLASSES_ROOT,
+            PCWSTR(key_path.as_ptr()),
+            0,
+            KEY_READ,
+            &mut key,
+        ).is_ok() {
+            let _ = RegCloseKey(key);
+            return true;
+        }
+
+        // Check user-level registration (HKCU\Software\Classes\guruconnect)
+        let key_path = to_wide(r"Software\Classes\guruconnect");
+        if RegOpenKeyExW(
+            HKEY_CURRENT_USER,
+            PCWSTR(key_path.as_ptr()),
+            0,
+            KEY_READ,
+            &mut key,
+        ).is_ok() {
+            let _ = RegCloseKey(key);
+            return true;
+        }
+    }
+
+    false
+}
+
+#[cfg(not(windows))]
+pub fn is_protocol_handler_registered() -> bool {
+    // On non-Windows, assume not registered (or check ~/.local/share/applications)
+    false
+}
+
 /// Parse a guruconnect:// URL and extract session parameters
 pub fn parse_protocol_url(url: &str) -> Result<(String, String, Option<String>)> {
     // Expected formats: