Remove openlit dependency to fix HF Spaces build timeout

openlit has conflicting dependencies with litellm/anthropic, causing
pip to infinitely backtrack through versions during dependency resolution.

Since openlit is marked as optional (monitoring tool), removing it
to allow successful builds.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

pyproject.toml

@@ -63,7 +63,7 @@ dependencies = [
     
     # ===== 可选功能 =====
     "dowhy>=0.12",               # 🟡 因果分析 (3+ 使用，可选)
-    "openlit>=1.33.0",           # 🟡 监控工具 (3+ 使用，可选)
+    # "openlit>=1.33.0",         # 🚫 已移除: 与 litellm/anthropic 版本冲突导致 pip 无限回溯
     
     # 🔧 开发/调试工具 (生产环境可考虑移除)
     "fire>=0.7.0",               # 🟡 CLI工具 (1 使用)