chore: init qmt_bridge repo (HTTP+WS bridge, MCP endpoint, docs, references)

.gitignore

@@ -0,0 +1,26 @@
+# ---- Python ----
+__pycache__/
+*.py[cod]
+*.egg-info/
+.venv/
+venv/
+
+# ---- test outputs (local mock test artifacts) ----
+tests/*.txt
+
+# ---- nested reference repo: keep the files, drop its git metadata ----
+reference/xtquant_big_convert/.git/
+reference/xtquant_big_convert/.gitignore
+
+# ---- editor / OS ----
+.vscode/
+.idea/
+*.swp
+*.swo
+Thumbs.db
+Desktop.ini
+.DS_Store
+
+# ---- local secrets / runtime ----
+bridge_local_config.py
+*.log