chore: 移除不再使用的 ChanMacro、system、tests。

这些目录已废弃，从仓库中清理。

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

ChanMacro/run_tests.sh

@@ -1,11 +0,0 @@
-#!/bin/bash
-# run_tests.sh — Run the ChanMacro test suite.
-#
-# Usage:
-#   ./run_tests.sh              # All tests
-#   ./run_tests.sh -v           # Verbose
-#   ./run_tests.sh -k regime    # Only regime tests
-#   ./run_tests.sh --cov        # With coverage (requires pytest-cov)
-
-cd "$(dirname "$0")"
-python -m pytest tests/ "$@" --tb=short