feat(lobtop): add launchd agent for Warp/Tailscale conflict fix

hosts/lobtop/home.nix

@@ -1,3 +1,52 @@
-{pkgs, ...}: {
+{pkgs, ...}: let
+  restoreScript = pkgs.writeShellScript "restore-warp-tailscale" ''
+    WARP=/usr/local/bin/warp-cli
+
+    IP_RANGES=("100.64.0.0/10")
+    DNS_DOMAINS=("ts.net" "ts.zx.dev")
+
+    log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"; }
+
+    apply_ip_ranges() {
+      local existing
+      existing=$("$WARP" tunnel ip list 2>/dev/null)
+      for range in "''${IP_RANGES[@]}"; do
+        if echo "$existing" | grep -qF "$range"; then
+          log "IP range already present: $range"
+        else
+          "$WARP" tunnel ip add-range "$range" 2>/dev/null && log "Added IP range: $range"
+        fi
+      done
+    }
+
+    apply_dns_fallbacks() {
+      local existing
+      existing=$("$WARP" dns fallback list 2>/dev/null)
+      for domain in "''${DNS_DOMAINS[@]}"; do
+        if echo "$existing" | grep -qF "$domain"; then
+          log "DNS fallback already present: $domain"
+        else
+          "$WARP" dns fallback add "$domain" 2>/dev/null && log "Added DNS fallback: $domain"
+        fi
+      done
+    }
+
+    log "Starting WARP/Tailscale restore"
+    apply_ip_ranges
+    apply_dns_fallbacks
+    log "Done"
+  '';
+in {
   rc.gpg.enable = true;
+
+  launchd.agents."com.user.restore-warp-tailscale" = {
+    enable = true;
+    config = {
+      ProgramArguments = ["${restoreScript}"];
+      WatchPaths = ["/Applications/Cloudflare WARP.app/Contents/Resources"];
+      RunAtLoad = true;
+      StandardOutPath = "/tmp/restore-warp-tailscale.log";
+      StandardErrorPath = "/tmp/restore-warp-tailscale.log";
+    };
+  };
 }