Open isolated node login surfaces as native macOS tabs with a centered black plus control

Hop-State: A_06FPHFY6SA0R5CXMBRZHG08
Hop-Proposal: R_06FPHFX326Q7FJA5Z4Y4Y08
Hop-Task: T_06FPHEQ8RZX6R1ZVV8WQ43R
Hop-Attempt: AT_06FPHEQ8RZVSEZXZ9E88YP0

src-tauri/src/lib.rs

@@ -328,12 +328,12 @@ fn new_window_button_script(accent_color: Option<&str>) -> String {
       position: fixed; right: 28px; bottom: 28px; z-index: 2147483647;
       width: 54px; height: 54px; display: grid; place-items: center;
       padding: 0; border: 1px solid rgba(255,255,255,.22); border-radius: 50%;
-      color: #fff; background: ${accent};
+      background: ${accent};
       box-shadow: 0 13px 34px rgba(0,0,0,.38), 0 0 22px color-mix(in srgb, ${accent} 38%, transparent);
-      font: 300 32px/1 -apple-system, BlinkMacSystemFont, sans-serif;
-      cursor: pointer; -webkit-font-smoothing: antialiased;
+      cursor: pointer;
       transition: transform 160ms ease, filter 160ms ease, opacity 160ms ease;
     }
+    #${id} svg { display: block; width: 22px; height: 22px; }
     #${id}:hover { transform: translateY(-2px) scale(1.04); filter: brightness(1.08); }
     #${id}:active { transform: scale(.96); }
     #${id}:focus-visible { outline: 2px solid #fff; outline-offset: 4px; }
@@ -344,15 +344,15 @@ fn new_window_button_script(accent_color: Option<&str>) -> String {
   const button = document.createElement("button");
   button.id = id;
   button.type = "button";
-  button.textContent = "+";
-  button.setAttribute("aria-label", "Open another Synapsis node window");
-  button.title = "Open another node";
+  button.innerHTML = '<svg viewBox="0 0 22 22" aria-hidden="true"><path d="M11 2.5V19.5M2.5 11H19.5" fill="none" stroke="black" stroke-width="2.5" stroke-linecap="round"/></svg>';
+  button.setAttribute("aria-label", "Open another Synapsis node tab");
+  button.title = "Open another node tab";
   button.addEventListener("click", async () => {
     button.disabled = true;
     try {
       await window.__TAURI_INTERNALS__.invoke("open_login_window");
     } catch (error) {
-      console.error("Could not open another Synapsis window", error);
+      console.error("Could not open another Synapsis node tab", error);
     } finally {
       button.disabled = false;
     }
@@ -384,22 +384,28 @@ async fn open_login_window(
 ) -> Result<(), String> {
     let sequence = state.window_sequence.fetch_add(1, Ordering::Relaxed);
     let label = format!("node-{sequence}");
-    WebviewWindowBuilder::new(
+    let builder = WebviewWindowBuilder::new(
         &app,
         label,
         WebviewUrl::App("index.html?newWindow=1".into()),
     )
+    .initialization_script("window.__SYNAPSIS_FRESH_LOGIN__ = true;")
+    .incognito(true)
     .title("Synapsis")
     .inner_size(1280.0, 820.0)
     .min_inner_size(720.0, 560.0)
     .center()
-    .hidden_title(true)
-    .title_bar_style(tauri::TitleBarStyle::Visible)
     .theme(Some(tauri::Theme::Dark))
-    .background_color(tauri::webview::Color(8, 9, 9, 255))
-    .build()
-    .map(|_| ())
-    .map_err(|error| format!("Couldn’t open another Synapsis window: {error}"))
+    .background_color(tauri::webview::Color(8, 9, 9, 255));
+    #[cfg(target_os = "macos")]
+    let builder = builder
+        .hidden_title(true)
+        .title_bar_style(tauri::TitleBarStyle::Visible)
+        .tabbing_identifier("synapsis-node-tabs");
+    builder
+        .build()
+        .map(|_| ())
+        .map_err(|error| format!("Couldn’t open another Synapsis node tab: {error}"))
 }
 
 #[tauri::command]
@@ -565,6 +571,7 @@ mod tests {
 
         assert!(script.contains(r##"const requestedAccent = "#12abef\"; alert(1); //";"##));
         assert!(script.contains("CSS.supports"));
+        assert!(script.contains("stroke=\"black\""));
         assert!(script.contains("open_login_window"));
     }
 

src-tauri/tauri.conf.json

@@ -20,6 +20,7 @@
         "center": true,
         "hiddenTitle": true,
         "titleBarStyle": "Visible",
+        "tabbingIdentifier": "synapsis-node-tabs",
         "theme": "Dark",
         "backgroundColor": "#080909"
       }