feat: dynamic per-tab settings window sizing

TablePro/Views/Settings/SettingsView.swift

@@ -10,6 +10,23 @@ import SwiftUI
 /// Settings tab identifiers for programmatic navigation
 enum SettingsTab: String {
     case general, appearance, editor, dataGrid, keyboard, history, ai, plugins, sync, license
+
+    static let fixedWidth: CGFloat = 720
+
+    var preferredHeight: CGFloat {
+        switch self {
+        case .general:    380
+        case .appearance: 500
+        case .editor:     300
+        case .dataGrid:   380
+        case .keyboard:   500
+        case .history:    320
+        case .ai:         520
+        case .plugins:    500
+        case .sync:       420
+        case .license:    280
+        }
+    }
 }
 
 /// Main settings view with tab-based navigation (macOS Settings style)
@@ -18,6 +35,10 @@ struct SettingsView: View {
     @Environment(UpdaterBridge.self) var updaterBridge
     @AppStorage("selectedSettingsTab") private var selectedTab: String = SettingsTab.general.rawValue
 
+    private var currentTab: SettingsTab {
+        SettingsTab(rawValue: selectedTab) ?? .general
+    }
+
     var body: some View {
         TabView(selection: $selectedTab) {
             GeneralSettingsView(settings: $settingsManager.general, updaterBridge: updaterBridge)
@@ -81,7 +102,8 @@ struct SettingsView: View {
                 }
                 .tag(SettingsTab.license.rawValue)
         }
-        .frame(width: 720, height: 500)
+        .frame(width: SettingsTab.fixedWidth, height: currentTab.preferredHeight)
+        .background(SettingsWindowResizer(size: CGSize(width: SettingsTab.fixedWidth, height: currentTab.preferredHeight)))
     }
 }
 

TablePro/Views/Settings/SettingsWindowResizer.swift

@@ -0,0 +1,39 @@
+//
+//  SettingsWindowResizer.swift
+//  TablePro
+//
+
+import AppKit
+import SwiftUI
+
+/// Resizes the Settings window height to match the selected tab's preferred size.
+/// Width stays fixed to keep all tab items visible. Uses AppKit's
+/// `NSWindow.setFrame(_:display:animate:)` for smooth height transitions,
+/// keeping the top-left corner pinned (standard macOS preferences behavior).
+struct SettingsWindowResizer: NSViewRepresentable {
+    var size: CGSize
+
+    func makeNSView(context: Context) -> NSView {
+        _SettingsWindowSizeView()
+    }
+
+    func updateNSView(_ nsView: NSView, context: Context) {
+        guard let window = nsView.window else { return }
+        let newFrameSize = window.frameRect(forContentRect: NSRect(origin: .zero, size: size)).size
+        guard window.frame.size != newFrameSize else { return }
+        // Defer to next run loop tick to avoid reentrant layout during SwiftUI rendering
+        DispatchQueue.main.async {
+            var frame = window.frame
+            frame.origin.y += frame.size.height - newFrameSize.height
+            frame.size = newFrameSize
+            window.setFrame(frame, display: true, animate: window.isVisible)
+        }
+    }
+}
+
+private final class _SettingsWindowSizeView: NSView {
+    override func viewDidMoveToWindow() {
+        super.viewDidMoveToWindow()
+        needsLayout = true
+    }
+}