feat: create autonomous Nivora package repository

Maintain a validated cross-distribution package catalog.
Automate upstream updates, isolated builds, diagnostics, and direct publication.
Build the official GitHub Desktop sources for Linux with working OAuth.

netbird/postremove.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -euo pipefail
+
+unit=/usr/lib/systemd/system/netbird.service
+
+if [[ ! -e "$unit" ]] && command -v systemctl >/dev/null 2>&1 && [[ -d /run/systemd/system ]]; then
+    if systemctl is-active --quiet netbird.service; then
+        systemctl stop netbird.service
+    fi
+    if systemctl is-enabled --quiet netbird.service; then
+        systemctl disable netbird.service
+    fi
+    systemctl daemon-reload
+fi