initial commit: Proximity iOS app proposal, full Swift code scaffold, reference backend, testing docs, generated Xcode project

2026-08-12 00:22:01 +00:00
commit 9d1b0f8dd9
52 changed files with 6271 additions and 0 deletions
--- a/Proximity/Models/ProximityEngine.swift
+++ b/Proximity/Models/ProximityEngine.swift
@@ -0,0 +1,18 @@
+import Foundation
+
+/// The underlying sensing technology powering a connection tier.
+enum ProximityEngine: String, CaseIterable, Codable {
+    case uwb      // Nearby Interaction (U1/U2 chip)
+    case ble      // Core Bluetooth
+    case beacon   // Core Location (iBeacon region monitoring)
+    case nfc      // Core NFC (tap-to-connect)
+
+    var displayName: String {
+        switch self {
+        case .uwb:    return "Ultra-Wideband"
+        case .ble:    return "Bluetooth"
+        case .beacon: return "Beacon"
+        case .nfc:    return "NFC"
+        }
+    }
+}