chore: reorganize repository layout and optimize README

tools/sync_surge_full.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+TMP_DIR="$(mktemp -d)"
+UPSTREAM_REPO_URL="${UPSTREAM_REPO_URL:-https://github.com/blackmatrix7/ios_rule_script.git}"
+UPSTREAM_REF="${UPSTREAM_REF:-master}"
+TARGET_DIR="${ROOT_DIR}/data/upstream"
+
+cleanup() {
+  rm -rf "$TMP_DIR"
+}
+trap cleanup EXIT
+
+echo "[sync] clone upstream: $UPSTREAM_REPO_URL@$UPSTREAM_REF"
+git clone --depth=1 --branch "$UPSTREAM_REF" "$UPSTREAM_REPO_URL" "$TMP_DIR/upstream" >/dev/null 2>&1
+
+mkdir -p "$TARGET_DIR/rule"
+rm -rf "$TARGET_DIR/rule/Surge"
+cp -R "$TMP_DIR/upstream/rule/Surge" "$TARGET_DIR/rule/Surge"
+
+UPSTREAM_COMMIT="$(git -C "$TMP_DIR/upstream" rev-parse HEAD)"
+UPSTREAM_DATE="$(git -C "$TMP_DIR/upstream" show -s --date=iso --format=%cd HEAD)"
+
+cat > "$TARGET_DIR/README.md" <<TXT
+# Local Upstream Cache
+
+This directory is generated by tools/sync_surge_full.sh.
+
+- Source: $UPSTREAM_REPO_URL
+- Ref: $UPSTREAM_REF
+- Commit: $UPSTREAM_COMMIT
+- Commit Date: $UPSTREAM_DATE
+TXT
+
+echo "[sync] done: commit=$UPSTREAM_COMMIT"