docs: publish install/uninstall scripts, README, FUNDING, support footer

Add curl-one-liner install with generated password file; uninstall flags for image/data/src; optional ALLOW_DEFAULT_PASSWORD; footer mirroring GitHub/Boosty/Telegram layout.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/uninstall.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+# Удаление контейнера и опционально данных (см. README).
+set -euo pipefail
+
+CONTAINER_NAME="${CONTAINER_NAME:-amnezia-admin}"
+IMAGE_NAME="${IMAGE_NAME:-amnezia-admin:latest}"
+INSTALL_DIR="${INSTALL_DIR:-/opt/amnezia-admin}"
+DATA_DIR="${DATA_DIR:-/opt/amnezia-admin-data}"
+
+need_root() {
+  if [[ "${EUID:-$(id -u)}" -ne 0 ]]; then
+    echo "Запустите от root: curl ... | sudo bash"
+    exit 1
+  fi
+}
+
+need_root
+
+echo "→ Останавливаю контейнер ${CONTAINER_NAME}..."
+docker rm -f "${CONTAINER_NAME}" 2>/dev/null || echo "(контейнер уже отсутствует)"
+
+if [[ "${REMOVE_IMAGE:-}" == "1" ]]; then
+  echo "→ Удаляю образ ${IMAGE_NAME}..."
+  docker rmi "${IMAGE_NAME}" 2>/dev/null || true
+fi
+
+if [[ "${REMOVE_DATA:-}" == "1" ]]; then
+  echo "→ Удаляю данные панели ${DATA_DIR}..."
+  rm -rf "${DATA_DIR}"
+fi
+
+if [[ "${REMOVE_SRC:-}" == "1" ]]; then
+  echo "→ Удаляю каталог исходников ${INSTALL_DIR}..."
+  rm -rf "${INSTALL_DIR}"
+fi
+
+echo "Готово."
+echo "Подсказка: REMOVE_DATA=1 REMOVE_SRC=1 REMOVE_IMAGE=1 curl ... | sudo bash — полная очистка."