Tell the user when Accessibility is missing

Without it the Shift-Shift gestures fail silently, so hiding the panel
left no way to bring it back and the app looked broken. The app now says
so on launch and points at Cmd+Shift+Space, which needs no permission,
and --diag reports the permission state alongside the status item's
placement so a lockout can be diagnosed instead of guessed at.

AGENTS.md

@@ -13,7 +13,13 @@ clicking an item copies it back to the clipboard.
   `NSStatusItem Preferred Position Prompt`). Left click toggles the panel,
   right click shows the menu (accessibility state, launch at login, open data
   folder, quit). Contains the single-instance guard and `LoginItem`
-  (`SMAppService`).
+  (`SMAppService`). Also sets `NSApp.mainMenu` with Hide Panel (Cmd+W) and Quit
+  (Cmd+Q) — an accessory app shows no menu bar, but the main menu still
+  services key equivalents, which is the only way to quit from the keyboard
+  while the panel has focus. `applicationShouldHandleReopen` shows the panel so
+  launching an already-running app does something. Supports `--sync-check` and
+  `--diag` (writes the status item's frame and permission state to
+  `/tmp/prompt-diag.txt`, then exits).
 - `Sources/Prompt/Store.swift` — `@MainActor` `ObservableObject` singleton.
   Data model: `Section` → `[PromptItem]`, item content is
   `.text(String)` or `.image(String)` (filename). Persists to
@@ -167,7 +173,10 @@ brew upgrade --cask prompt
   the main thread (the hotkey handler already dispatches to a global queue).
 - The double-Shift tap needs Accessibility; without it the event tap silently
   fails and only the Carbon fallbacks work. The panel banner and the status
-  menu both surface the permission state.
+  menu both surface the permission state, and `AppDelegate` shows a launch
+  alert when it is missing — otherwise a user who hides the panel is locked out
+  (no hotkey, no Dock icon) and reports it as "the app won't come back". Check
+  with `Prompt --diag` (`accessibility: false` is the tell).
 - `Info.plist` sets `NSAllowsArbitraryLoads` because the sync server URL is
   user-supplied and is often plain HTTP (LAN address, self-hosted box). ATS
   would otherwise block it with a confusing error.

README.md

@@ -32,10 +32,11 @@ to your work. Click anything to copy it back to your clipboard.
 | Close panel | Esc |
 
 Double-Shift gestures require **Accessibility access** (Prompt reads the
-selection by simulating Cmd+C, then restores your clipboard untouched). The
+selection by simulating Cmd+C, then restores your clipboard untouched). Until
-Cmd+Shift fallbacks work without it. Bare keys like Space and Cmd+C are
+it is granted, use Cmd+Shift+Space and Cmd+Shift+C, or click the menu bar icon
-deliberately not bound inside the panel so they never conflict with typing in
+— and launching the app again always brings the panel back. Bare keys like
-the composer.
+Space and Cmd+C are deliberately not bound inside the panel so they never
+conflict with typing in the composer.
 
 ## Install
 

Sources/Prompt/App.swift

@@ -27,6 +27,18 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
             return
         }
 
+        // --diag reports where the status item landed. On a notched Mac a
+        // brand-new item can be placed under the notch and be unclickable,
+        // which locks the user out once the panel is hidden.
+        if CommandLine.arguments.contains("--diag") {
+            setupStatusItem()
+            DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
+                self.writeDiagnostics()
+                NSApp.terminate(nil)
+            }
+            return
+        }
+
         // Single instance: stale copies keep their hotkeys alive after an
         // update and eat the events meant for the new instance.
         let myPid = ProcessInfo.processInfo.processIdentifier
@@ -48,6 +60,7 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
 
         setupStatusItem()
         setupMainMenu()
+        promptForAccessibilityIfNeeded()
 
         // Show the panel on launch so the app is discoverable (it has no Dock
         // icon and the menu bar icon can be hard to spot on a full bar).
@@ -57,6 +70,28 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
         }
     }
 
+    /// Without Accessibility the Shift-Shift gestures fail silently, so the
+    /// panel can be hidden with no obvious way back. Say so on launch and
+    /// point at the shortcut that works without the permission.
+    private func promptForAccessibilityIfNeeded() {
+        guard !AXIsProcessTrusted() else { return }
+        let alert = NSAlert()
+        alert.messageText = "Prompt needs Accessibility access"
+        alert.informativeText = """
+        Capturing with Shift-Shift (and showing the panel with right Shift twice) \
+        only works with Accessibility access.
+
+        Until it is granted, use Cmd+Shift+Space to show or hide the panel and \
+        Cmd+Shift+C to capture, or click the menu bar icon.
+        """
+        alert.addButton(withTitle: "Open Settings")
+        alert.addButton(withTitle: "Later")
+        if alert.runModal() == .alertFirstButtonReturn {
+            let options = [kAXTrustedCheckOptionPrompt.takeUnretainedValue(): true] as CFDictionary
+            _ = AXIsProcessTrustedWithOptions(options)
+        }
+    }
+
     /// A launched-again app must reveal itself. Without this, `open` (or
     /// clicking it in Finder/Spotlight) hits the running instance, which does
     /// nothing, so the app looks like it never started.
@@ -103,6 +138,26 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
         PanelController.shared.hide()
     }
 
+    @MainActor
+    private func writeDiagnostics() {
+        var lines = ["Prompt diagnostics", "accessibility: \(AXIsProcessTrusted())"]
+        if let window = statusItem?.button?.window {
+            lines.append("status item frame: \(window.frame)")
+            if let screen = window.screen ?? NSScreen.main {
+                lines.append("screen: \(screen.frame) visible: \(screen.visibleFrame)")
+                lines.append("notch inset: \(screen.safeAreaInsets)")
+                let underNotch = window.frame.maxX > screen.frame.maxX - screen.safeAreaInsets.right
+                lines.append("under the notch: \(underNotch)")
+            }
+        } else {
+            lines.append("status item has no window (not in the menu bar)")
+        }
+        lines.append("preferred position: \(UserDefaults.standard.object(forKey: "NSStatusItem Preferred Position Prompt") ?? "unset")")
+        try? lines.joined(separator: "\n").write(
+            to: URL(fileURLWithPath: "/tmp/prompt-diag.txt"), atomically: true, encoding: .utf8
+        )
+    }
+
     private func setupStatusItem() {
         let item = NSStatusBar.system.statusItem(withLength: NSStatusItem.squareLength)
         item.autosaveName = "Prompt"

Sources/Prompt/PanelView.swift

@@ -87,8 +87,13 @@ struct PanelView: View {
         HStack(spacing: 8) {
             Image(systemName: "exclamationmark.triangle.fill")
                 .foregroundStyle(.yellow)
-            Text("Shift-tap capture needs Accessibility access.")
+            VStack(alignment: .leading, spacing: 2) {
-                .font(.caption)
+                Text("Shift-tap capture needs Accessibility access.")
+                    .font(.caption)
+                Text("Meanwhile: Cmd+Shift+Space toggles this panel.")
+                    .font(.caption2)
+                    .foregroundStyle(.secondary)
+            }
             Spacer()
             Button("Grant…") {
                 let options = [kAXTrustedCheckOptionPrompt.takeUnretainedValue(): true] as CFDictionary