Stop listing Control Center's off-screen module duplicates

Control Center reports every module it owns, so the tray filled with
identical tiles for items that are not actually in the menu bar. Keep
only items whose accessibility position is in the bar and de-duplicate
by title, so each tray icon appears once.

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Assisted-by: Crush:deepseek-v4.1-flash

AGENTS.md

@@ -38,6 +38,10 @@ executable SwiftPM package, no external dependencies (all Apple frameworks).
   or per-element, so every helper returns `nil` instead of force-unwrapping. The
   `enumerate()` routine is `nonisolated static` so `--self-test` can run it.
 - Items are keyed by `pid-index`; `MenuBarItem` equality ignores the AX element.
+- Control Center is special: its extras menu bar lists **every module it owns**,
+  including ones not in the bar, which are parked off-screen at `y≈982`.
+  `enumerate()` drops items whose AX position `y > 60` and de-duplicates by
+  title per app, otherwise the tray fills with identical "Control Center" tiles.
 - Reading another app's UI is the only TCC permission needed; there is no Screen
   Recording or Apple Events usage.
 
@@ -112,6 +116,24 @@ no control over this, so the app creates its own `NSStatusItem` and:
 `/tmp/simpletopbar-items.txt`; use it to verify the icon is not under the notch
 (x should be ~1200, not ~765).
 
+## Hiding other menu bar items
+
+`MenuBarHider` creates a zero-width spacer `NSStatusItem` at launch and grows its
+length to `hiddenLength` (10_000) to push the icons on its left off-screen. Its
+preferred position controls where the hidden/kept boundary lands:
+
+- Seed **250** (default) puts the boundary just left of Wi-Fi, so every
+  third-party app icon goes to x < 0 (cmux, Kapture, moomoo, WireGuard,
+  TextInputMenuAgent, Now Playing) while **Wi-Fi (x≈1173), Spotlight, Clock,
+  Battery, Control Center and our hamburger stay visible**.
+- Verified with `--diag-hide` across positions 100–400. Below ~200 Wi-Fi gets
+  hidden too; above ~300 app icons (Now Playing, TextInput) leak back.
+- `debug.spacerPos` (Double) overrides the seed for tuning without rebuilding.
+- **Wi-Fi/Spotlight/Clock/Battery/Control Center cannot be hidden**: macOS pins
+  them to the far right and a third-party item can never be inserted to their
+  right, so the spacer has nothing to push them with. This is a macOS
+  constraint, not a bug.
+
 ## Gotchas
 
 - `AppListModel` is `@MainActor`; the `NSWorkspace` observers hop back with

README.md

@@ -27,11 +27,25 @@ still works.
 
 macOS has no public API to move another app's status item. The **Hide items from
 the menu bar** toggle uses the spacer technique: a zero-width status item is
-created at launch whose length is expanded to push the items to its left
-off-screen. This is reliable only when SimpleTopBar starts at login (its spacer
-then sits to the right of later-launched apps' items) and may need re-toggling
-after items move around. It is off by default and always undone on quit; if the
-app dies, macOS removes the spacer automatically.
+created at launch whose length is expanded to push the other icons off-screen so
+they only live in this panel. It is off by default and always undone on quit; if
+the app dies, macOS removes the spacer automatically.
+
+What it can and cannot hide:
+
+- It hides **other third-party apps' icons** (cmux, Kapture, WireGuard, input
+  source, Now Playing, …) so only your apps' icons leave the bar.
+- It **keeps Wi-Fi, Spotlight, Clock, Battery and Control Center**. The spacer's
+  boundary is tuned (preferred position 250) to fall just left of Wi-Fi, so the
+  Apple items on the right stay visible. macOS reserves that far-right area: a
+  third-party item can never be placed to the right of it, so those icons cannot
+  be pushed away even in principle. (Bartender and Ice hit the same wall and
+  cover the area with their own overlay bar instead.)
+- Newly launched apps are placed to the left of the spacer, so they are hidden
+  automatically.
+- Advanced: set `defaults write dev.tzgyn.simpletopbar debug.spacerPos -float <n>`
+  to move the boundary (larger = keep more icons; > ~400 starts leaking app
+  icons back into the bar).
 
 ## Install with Homebrew
 

Sources/SimpleTopBar/App.swift

@@ -53,6 +53,14 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
             return
         }
 
+        if CommandLine.arguments.contains("--diag-hide") {
+            MenuBarHider.shared.enabled = true
+            DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
+                dumpMenuBarItems()
+            }
+            return
+        }
+
         // The tray is empty without Accessibility permission, so surface the
         // system prompt once at launch instead of waiting for the user to open
         // the panel and find the button.

Sources/SimpleTopBar/MenuBarItems.swift

@@ -68,11 +68,23 @@ final class MenuBarItemManager: ObservableObject {
             guard let bar = extrasMenuBar(of: axApp),
                   let children = children(of: bar) else { continue }
 
+            var seenTitles = Set<String>()
             for (index, child) in children.enumerated() {
+                // Control Center reports every module it owns, including the
+                // ones not in the menu bar, which are parked off-screen around
+                // y=982. Keep only items actually sitting in the bar.
+                if let position = pointAttribute(child, kAXPositionAttribute), position.y > 60 {
+                    continue
+                }
+
                 let title = stringAttribute(child, kAXDescriptionAttribute)
                     ?? stringAttribute(child, kAXTitleAttribute)
                     ?? app.localizedName
                     ?? "Item"
+                // Several Control Center modules share the generic title
+                // "Control Center"; show each distinct title once per app.
+                if !seenTitles.insert(title).inserted { continue }
+
                 found.append(MenuBarItem(
                     id: "\(pid)-\(index)",
                     pid: pid,
@@ -165,7 +177,18 @@ final class MenuBarHider: ObservableObject {
     /// Create the spacer early (at launch) so it lands as far right as possible.
     func prepare() {
         guard spacer == nil else { return }
+        let name = "SimpleTopBarHider"
+        let key = "NSStatusItem Preferred Position \(name)"
+        // The boundary between "hidden" and "kept" falls just left of Wi-Fi at
+        // ~250, so the other apps hide while Apple's Wi-Fi/Clock/Battery/Control
+        // Center/Spotlight stay visible. `debug.spacerPos` overrides the seed.
+        if let override = UserDefaults.standard.object(forKey: "debug.spacerPos") as? Double {
+            UserDefaults.standard.set(override, forKey: key)
+        } else if UserDefaults.standard.object(forKey: key) == nil {
+            UserDefaults.standard.set(250.0, forKey: key)
+        }
         let item = NSStatusBar.system.statusItem(withLength: 0)
+        item.autosaveName = name
         item.button?.isHidden = true
         spacer = item
     }

Sources/SimpleTopBar/TopBarView.swift

@@ -115,7 +115,7 @@ struct TopBarView: View {
                 .controlSize(.mini)
                 .padding(.horizontal, 12)
                 .padding(.top, 6)
-                .help("Best-effort: pushes the real items off the menu bar so they only live here. Reliable when SimpleTopBar starts at login.")
+                .help("Best-effort: pushes other apps' icons off the menu bar so they only live here. Apple's Wi-Fi, Spotlight, Clock, Battery and Control Center stay visible; macOS won't let any third-party app move them.")
             }
         }
     }

build-app.sh

@@ -2,7 +2,7 @@
 set -euo pipefail
 cd "$(dirname "$0")"
 
-VERSION="${1:-0.2.2}"
+VERSION="${1:-0.2.3}"
 
 swift build -c release