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.

tools/run_checks.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+set -euo pipefail
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+repo_root="$(cd "${script_dir}/.." && pwd)"
+cd "$repo_root"
+
+mapfile -d '' shell_files < <(
+    find . -type f -not -path './.git/*' -print0 |
+        while IFS= read -r -d '' file; do
+            if head -n 1 -- "$file" 2>/dev/null |
+                grep -IqE '^#!.*(bash|/sh)([[:space:]]|$)'; then
+                printf '%s\0' "$file"
+            fi
+        done
+)
+
+mapfile -d '' python_files < <(
+    find . -type f -name '*.py' -not -path './.git/*' -print0
+)
+
+for file in "${shell_files[@]}"; do
+    bash -n "$file"
+done
+
+if [[ "${#shell_files[@]}" -gt 0 ]]; then
+    shellcheck -x "${shell_files[@]}"
+fi
+
+if [[ "${#python_files[@]}" -gt 0 ]]; then
+    python3 -m py_compile "${python_files[@]}"
+fi
+
+python3 -m unittest discover -s tests -p 'test_*.py' -v
+bash tests/test_helper.sh
+bash tests/test_claude_alt.sh
+bash tests/test_codex_computer_use.sh
+bash tests/test_happ_theme.sh
+bash tests/test_ventoy.sh
+bash tests/test_yandex_browser.sh
+python3 tools/validate_repo.py
+
+if command -v stplr-spec >/dev/null 2>&1; then
+    for staplerfile in */Staplerfile; do
+        stplr-spec get-field --path "$staplerfile" name >/dev/null
+    done
+fi
+
+echo 'OK: все проверки Nivora завершены'