fix(mac): add tailnet discovery fallback and debug CLI

apps/macos/Sources/ClawdbotDiscovery/BridgeEndpointID.swift

@@ -0,0 +1,26 @@
+import ClawdbotKit
+import Foundation
+import Network
+
+public enum BridgeEndpointID {
+    public static func stableID(_ endpoint: NWEndpoint) -> String {
+        switch endpoint {
+        case let .service(name, type, domain, _):
+            // Keep stable across encoded/decoded differences (e.g. \032 for spaces).
+            let normalizedName = Self.normalizeServiceNameForID(name)
+            return "\(type)|\(domain)|\(normalizedName)"
+        default:
+            return String(describing: endpoint)
+        }
+    }
+
+    public static func prettyDescription(_ endpoint: NWEndpoint) -> String {
+        BonjourEscapes.decode(String(describing: endpoint))
+    }
+
+    private static func normalizeServiceNameForID(_ rawName: String) -> String {
+        let decoded = BonjourEscapes.decode(rawName)
+        let normalized = decoded.split(whereSeparator: \.isWhitespace).joined(separator: " ")
+        return normalized.trimmingCharacters(in: .whitespacesAndNewlines)
+    }
+}