chore: bootstrap shx-helper repo

tests/smoke.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+workdir="$(mktemp -d)"
+trap 'rm -rf "$workdir"' EXIT
+
+cat >"$workdir/.env" <<'EOF'
+SHX_URL=https://shx.example
+SHX_TOKEN=test-token
+EOF
+
+mkdir -p "$workdir/bin"
+cat >"$workdir/bin/curl" <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+printf '%s\n' '{"files":["https://shx.example/mock-file"]}'
+EOF
+chmod +x "$workdir/bin/curl"
+
+cat >"$workdir/bin/jq" <<'EOF'
+#!/usr/bin/env python3
+import json, sys
+payload = json.load(sys.stdin)
+for item in payload.get("files", []):
+    print(item)
+EOF
+chmod +x "$workdir/bin/jq"
+
+touch "$workdir/demo.txt"
+
+PATH="$workdir/bin:$PATH" \
+SHX_ENV_FILE="$workdir/.env" \
+"$repo_root/bin/shx-upload" "$workdir/demo.txt" >"$workdir/out.txt"
+
+grep -Fx 'https://shx.example/mock-file' "$workdir/out.txt"
+
+echo 'smoke ok'