diff --git a/codec_dashboard.html b/codec_dashboard.html
index 11771680..3ef923ae 100644
--- a/codec_dashboard.html
+++ b/codec_dashboard.html
@@ -165,7 +165,7 @@
 .tab-badge.hidden { display: none; }
 
 /* ── Content ── */
-.content { flex: 1; min-height: 0; overflow-y: auto; padding-bottom: calc(var(--input-h,76px) + 16px); -webkit-overflow-scrolling: touch; }
+.content { flex: 1; min-height: 0; overflow-y: auto; padding-bottom: 16px; -webkit-overflow-scrolling: touch; }
 .panel { display: none; padding: 14px; }
 .panel.active { display: block; }
 #panel-chat { position: relative; }
@@ -179,7 +179,13 @@
 
 /* ── Input Area (matches Deep Chat) ── */
 .input-area {
-  position: fixed; left: 0; right: 0; bottom: 0; z-index: 9997;
+  /* Desktop/native app: a normal flex child at the bottom of .app, so the
+     scroll area (.content) sizes to the space left over and a long reply
+     scrolls fully into view. It only goes position:fixed on phones (see the
+     touch media query) where the docked nav + gesture bars need it.
+     Regression note: 1612bf0 made it fixed on EVERY size, which hid the last
+     ~60px of every reply behind the composer in the desktop window. */
+  flex-shrink: 0;
   padding: 8px 12px; border-top: 1px solid var(--border); background: var(--surface);
   padding-bottom: calc(8px + var(--safe-bottom));
 }
@@ -614,7 +620,7 @@
 .text-size-group button.sel{background:var(--accent);border-color:var(--accent);color:#fff}
 
 @media (max-width: 768px), (max-height: 600px) and (pointer: coarse){
-  .input-area{bottom:var(--nav-h,56px);padding-bottom:8px}
+  .input-area{position:fixed;left:0;right:0;bottom:var(--nav-h,56px);z-index:9997;padding-bottom:8px}
   .page-nav{padding-bottom:calc(6px + env(safe-area-inset-bottom,0px))}
   .content{padding-bottom:calc(var(--nav-h,56px) + var(--input-h,64px) + 12px)}
 }
diff --git a/packaging/macos/launcher/codec_launcher.swift b/packaging/macos/launcher/codec_launcher.swift
index f2543baa..a32b617b 100644
--- a/packaging/macos/launcher/codec_launcher.swift
+++ b/packaging/macos/launcher/codec_launcher.swift
@@ -140,6 +140,13 @@ final class Launcher: NSObject, NSApplicationDelegate {
     func applicationDidFinishLaunching(_ notification: Notification) {
         log("CODEC launched from \(bundleURL.path)")
 
+        // Without a main menu carrying an Edit menu, macOS has nowhere to
+        // dispatch Cmd-C/X/V/A/Z, so paste (etc.) silently failed inside the
+        // dashboard's WKWebView — the shortcuts only worked in a real browser
+        // because the browser ships its own Edit menu. The status-bar item's
+        // menu is NOT the main menu and does not supply these key-equivalents.
+        installMainMenu()
+
         let item = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength)
         if let button = item.button {
             button.image = NSImage(systemSymbolName: "waveform", accessibilityDescription: "CODEC")
@@ -161,6 +168,46 @@ final class Launcher: NSObject, NSApplicationDelegate {
         }
     }
 
+    /// Install the app's main menu. The only functional requirement is a
+    /// standard Edit menu — its items use the first-responder selectors
+    /// (`paste:`, `copy:`, ...) with a nil target, so the keystroke walks the
+    /// responder chain to the focused WKWebView and the clipboard works inside
+    /// the app window exactly as it does in a browser.
+    private func installMainMenu() {
+        let mainMenu = NSMenu()
+
+        // App menu. macOS always treats the first submenu as the app menu; it
+        // owns Cmd-Q, Cmd-H and friends.
+        let appItem = NSMenuItem()
+        mainMenu.addItem(appItem)
+        let appMenu = NSMenu()
+        appItem.submenu = appMenu
+        appMenu.addItem(withTitle: "Hide CODEC", action: #selector(NSApplication.hide(_:)), keyEquivalent: "h")
+        let hideOthers = appMenu.addItem(withTitle: "Hide Others",
+                                         action: #selector(NSApplication.hideOtherApplications(_:)),
+                                         keyEquivalent: "h")
+        hideOthers.keyEquivalentModifierMask = [.command, .option]
+        appMenu.addItem(withTitle: "Show All", action: #selector(NSApplication.unhideAllApplications(_:)), keyEquivalent: "")
+        appMenu.addItem(.separator())
+        appMenu.addItem(withTitle: "Quit CODEC", action: #selector(NSApplication.terminate(_:)), keyEquivalent: "q")
+
+        // Edit menu — the reason this method exists.
+        let editItem = NSMenuItem()
+        mainMenu.addItem(editItem)
+        let editMenu = NSMenu(title: "Edit")
+        editItem.submenu = editMenu
+        editMenu.addItem(withTitle: "Undo", action: Selector(("undo:")), keyEquivalent: "z")
+        let redo = editMenu.addItem(withTitle: "Redo", action: Selector(("redo:")), keyEquivalent: "z")
+        redo.keyEquivalentModifierMask = [.command, .shift]
+        editMenu.addItem(.separator())
+        editMenu.addItem(withTitle: "Cut", action: #selector(NSText.cut(_:)), keyEquivalent: "x")
+        editMenu.addItem(withTitle: "Copy", action: #selector(NSText.copy(_:)), keyEquivalent: "c")
+        editMenu.addItem(withTitle: "Paste", action: #selector(NSText.paste(_:)), keyEquivalent: "v")
+        editMenu.addItem(withTitle: "Select All", action: #selector(NSText.selectAll(_:)), keyEquivalent: "a")
+
+        NSApp.mainMenu = mainMenu
+    }
+
     private func rebuildMenu(status: String, enabled: Bool) {
         let menu = NSMenu()
         menu.addItem(withTitle: status, action: nil, keyEquivalent: "")