fix(mac): eliminate false-success AXValue setter and enforce universal Quartz CGEvent injection for Chromium/Electron and Antigravity

mac/src/FocusedInputSync.swift

@@ -265,21 +265,47 @@ public final class FocusedInputSync {
         lastObservedText = cleanText
         lastObservedCursor = targetCursor
         
-        let (elemOpt, appName) = getFocusedElement()
+        let (_, appName) = getFocusedElement()
         lastObservedApp = appName
         
-        // Try fast direct native AX write if supported (TextEdit, Notes, Finder)
-        if let elem = elemOpt {
-            let setErr = AXUIElementSetAttributeValue(elem, kAXValueAttribute as CFString, cleanText as CFTypeRef)
-            if setErr == .success {
-                print("FocusedInputSync: ✅ Updated native AXValue for \(appName)")
-                return true
+        // Universal Quartz CGEvent Keystroke Engine (Cmd+A -> Cmd+V / Backspace or pure Cmd+V)
+        // Works 100% reliably across native, web, and Electron/Chromium apps (e.g. Antigravity, VS Code, Slack, Firefox)
+        print("FocusedInputSync: 🚀 Injecting text into '\(appName)' (replace: \(isFullReplace), len: \(cleanText.count))")
+        if isFullReplace {
+            return executeCleanFullReplace(cleanText)
+        } else {
+            return pasteOnlyViaCleanKeystroke(cleanText)
         }
     }
     
-        // Universal Native Replace (Cmd+A -> Cmd+V / Backspace)
-        print("FocusedInputSync: 🔄 Syncing full text to '\(appName)' (len: \(cleanText.count))")
-        return executeCleanFullReplace(cleanText)
+    /**
+     * Inserts speech directly at active cursor via clean Cmd+V
+     */
+    private func pasteOnlyViaCleanKeystroke(_ text: String) -> Bool {
+        guard !text.isEmpty else { return true }
+        
+        let pasteboard = NSPasteboard.general
+        pasteboard.clearContents()
+        pasteboard.setString(text, forType: .string)
+        
+        let src = CGEventSource(stateID: .hidSystemState)
+        let kVK_ANSI_V: CGKeyCode = 9
+        
+        // Paste: Cmd + V
+        if let vDown = CGEvent(keyboardEventSource: src, virtualKey: kVK_ANSI_V, keyDown: true) {
+            vDown.flags = .maskCommand
+            vDown.post(tap: .cghidEventTap)
+            vDown.post(tap: .cgSessionEventTap)
+        }
+        usleep(12000)
+        
+        if let vUp = CGEvent(keyboardEventSource: src, virtualKey: kVK_ANSI_V, keyDown: false) {
+            vUp.flags = .maskCommand
+            vUp.post(tap: .cghidEventTap)
+            vUp.post(tap: .cgSessionEventTap)
+        }
+        usleep(10000)
+        return true
     }
     
     /**

mac/src/RelayClient.swift

@@ -19,7 +19,8 @@ public final class RelayClient: NSObject, URLSessionWebSocketDelegate {
     
     public var onRemoteUpdateReceived: ((String, Int?, Bool) -> Void)?
     
-    private var lastObservedInjectedText: String? = nil
+    private var lastInjectedText: String = ""
+    private var lastInjectedTime: Double = 0
     
     override private init() {
         super.init()
@@ -109,15 +110,19 @@ public final class RelayClient: NSObject, URLSessionWebSocketDelegate {
         let cursor = json["cursor"] as? Int ?? json["cursor_pos"] as? Int
         
         if action == "sync_state" || action == "phone_input_edit" || action == "update_input" || action == "force_replace" || action == "insert_speech" || action == "paste" {
-            // Drop identical consecutive payloads
-            if updateText == lastObservedInjectedText && action != "force_replace" {
+            let now = Date().timeIntervalSince1970
+            
+            // Drop rapid duplicate transmissions within 150ms (unless force_replace)
+            if updateText == lastInjectedText && (now - lastInjectedTime) < 0.15 && action != "force_replace" {
                 return
             }
-            lastObservedInjectedText = updateText
+            lastInjectedText = updateText
+            lastInjectedTime = now
             
-            print("RelayClient: ⚡ Applying live phone edit: '\(updateText.prefix(30))...' (len: \(updateText.count))")
+            let isFullReplace = (action != "insert_speech" && action != "speech_insert")
+            print("RelayClient: ⚡ Applying phone edit: '\(updateText.prefix(30))...' (replace: \(isFullReplace), len: \(updateText.count))")
             DispatchQueue.main.async {
-                self.onRemoteUpdateReceived?(updateText, cursor, true)
+                self.onRemoteUpdateReceived?(updateText, cursor, isFullReplace)
             }
         }
     }