Eliminate residual left-edge spacing in the home shell.

Make the chrome column conform to the shell corner radius and pin the shell flush to its container so sidebar corners render cleanly without visual gaps.

Made-with: Cursor

zoom_app/ViewController.swift

@@ -669,6 +669,9 @@ class ViewController: NSViewController {
         let chromeColumn = NSView()
         chromeColumn.wantsLayer = true
         chromeColumn.layer?.backgroundColor = chromeUnifiedBackground.cgColor
+        chromeColumn.layer?.cornerRadius = appShellCornerRadius
+        chromeColumn.layer?.maskedCorners = [.layerMinXMinYCorner, .layerMinXMaxYCorner]
+        chromeColumn.layer?.masksToBounds = true
         let chromeDivider = NSView()
         chromeDivider.wantsLayer = true
         chromeDivider.layer?.backgroundColor = NSColor.black.withAlphaComponent(0.32).cgColor
@@ -694,10 +697,10 @@ class ViewController: NSViewController {
         content.translatesAutoresizingMaskIntoConstraints = false
 
         NSLayoutConstraint.activate([
-            shell.leadingAnchor.constraint(equalTo: root.leadingAnchor, constant: 4),
-            shell.trailingAnchor.constraint(equalTo: root.trailingAnchor, constant: -4),
+            shell.leadingAnchor.constraint(equalTo: root.leadingAnchor),
+            shell.trailingAnchor.constraint(equalTo: root.trailingAnchor),
             shell.topAnchor.constraint(equalTo: root.topAnchor, constant: 0),
-            shell.bottomAnchor.constraint(equalTo: root.bottomAnchor, constant: -4),
+            shell.bottomAnchor.constraint(equalTo: root.bottomAnchor),
             chromeColumn.leadingAnchor.constraint(equalTo: shell.leadingAnchor),
             chromeColumn.topAnchor.constraint(equalTo: shell.topAnchor),
             chromeColumn.bottomAnchor.constraint(equalTo: shell.bottomAnchor),
@@ -712,7 +715,7 @@ class ViewController: NSViewController {
             chromeHeader.heightAnchor.constraint(equalToConstant: homeChromeHeaderHeight),
             sidebar.leadingAnchor.constraint(equalTo: chromeColumn.leadingAnchor),
             sidebar.trailingAnchor.constraint(equalTo: chromeColumn.trailingAnchor),
-            sidebar.topAnchor.constraint(equalTo: chromeHeader.bottomAnchor, constant: 2),
+            sidebar.topAnchor.constraint(equalTo: chromeHeader.bottomAnchor),
             sidebar.bottomAnchor.constraint(equalTo: chromeColumn.bottomAnchor),
             content.leadingAnchor.constraint(equalTo: chromeColumn.trailingAnchor),
             content.trailingAnchor.constraint(equalTo: shell.trailingAnchor),