Initial commit

Whisper model weights excluded from git — auto-downloaded at first Xcode
build via Scripts/download_whisper_model.sh (~600 MB, one-time).

LockInBroMonitor/DeviceActivityMonitorExtension.swift

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+//
+//  DeviceActivityMonitorExtension.swift
+//  LockInBroMonitor
+//
+//  When a distraction-app usage event exceeds the user's threshold,
+//  this extension applies a ManagedSettings shield so the app shows
+//  a "get back to work" overlay. Shields are cleared when the focus
+//  session schedule ends or the main app calls stopMonitoring().
+//
+
+import DeviceActivity
+import FamilyControls
+import Foundation
+import ManagedSettings
+
+class DeviceActivityMonitorExtension: DeviceActivityMonitor {
+
+    private let store = ManagedSettingsStore(named: .lockinbro)
+    private let defaults = UserDefaults(suiteName: "group.com.adipu.LockInBroMobile")
+
+    // MARK: - Threshold Reached
+
+    override func eventDidReachThreshold(_ event: DeviceActivityEvent.Name, activity: DeviceActivityName) {
+        super.eventDidReachThreshold(event, activity: activity)
+
+        // Load the user's selected distraction apps from the shared App Group
+        guard let data = defaults?.data(forKey: "screenTimeSelection"),
+              let selection = try? JSONDecoder().decode(FamilyActivitySelection.self, from: data) else {
+            return
+        }
+
+        // Apply shield to all selected apps — once ANY threshold fires, shield them all.
+        // This is simpler and gives the user a single nudge rather than per-app shields
+        // trickling in one-by-one.
+        store.shield.applications = selection.applicationTokens.isEmpty ? nil : selection.applicationTokens
+        store.shield.applicationCategories = selection.categoryTokens.isEmpty
+            ? nil
+            : ShieldSettings.ActivityCategoryPolicy.specific(selection.categoryTokens)
+    }
+
+    // MARK: - Schedule Lifecycle
+
+    override func intervalDidStart(for activity: DeviceActivityName) {
+        super.intervalDidStart(for: activity)
+        // Ensure shields are clear at the start of each monitoring interval
+        store.shield.applications = nil
+        store.shield.applicationCategories = nil
+    }
+
+    override func intervalDidEnd(for activity: DeviceActivityName) {
+        super.intervalDidEnd(for: activity)
+        // Clean up shields when the schedule interval ends
+        store.shield.applications = nil
+        store.shield.applicationCategories = nil
+    }
+}
+
+// Mirror the named store constant from the main app
+extension ManagedSettingsStore.Name {
+    static let lockinbro = ManagedSettingsStore.Name("lockinbro")
+}

LockInBroMonitor/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.deviceactivity.monitor-extension</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).DeviceActivityMonitorExtension</string>
+	</dict>
+</dict>
+</plist>

LockInBroMonitor/LockInBroMonitor.entitlements

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.developer.family-controls</key>
+	<true/>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.com.adipu.LockInBroMobile</string>
+	</array>
+</dict>
+</plist>