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.

tests/test_yandex_browser.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+set -euo pipefail
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+repo_root="$(cd "${script_dir}/.." && pwd)"
+recipe="${repo_root}/yandex-browser-stable/Staplerfile"
+postinstall="${repo_root}/yandex-browser-stable/postinstall.sh"
+
+grep -Fq 'https://repo.yandex.ru/yandex-browser/deb/' "$recipe"
+grep -Fq '/usr/bin/yandex-browser-stable' "$recipe"
+grep -Fq 'extracted/usr/share/applications' "$recipe"
+grep -Fq 'compatibility_desktop=' "$recipe"
+grep -Fq 'canonical_desktop=' "$recipe"
+grep -Fq "sed -i '/^NoDisplay=true\$/d'" "$recipe"
+grep -Fq "sed -i '/^\\[Desktop Entry\\]\$/a NoDisplay=true'" "$recipe"
+grep -Fq 'update_codecs' "$postinstall"
+
+if grep -Eq '/etc/(cron|xdg/autostart)' "$recipe"; then
+    echo 'Yandex Browser recipe must not package upstream auto-update hooks' >&2
+    exit 1
+fi
+
+echo 'OK: Yandex Browser управляется Stapler без upstream cron-задач'