[kimi] Add rate limiting middleware for Matrix API endpoints (#683) (#746)

src/dashboard/middleware/__init__.py

@@ -1,6 +1,7 @@
 """Dashboard middleware package."""
 
 from .csrf import CSRFMiddleware, csrf_exempt, generate_csrf_token, validate_csrf_token
+from .rate_limit import RateLimiter, RateLimitMiddleware
 from .request_logging import RequestLoggingMiddleware
 from .security_headers import SecurityHeadersMiddleware
 
@@ -9,6 +10,8 @@ __all__ = [
     "csrf_exempt",
     "generate_csrf_token",
     "validate_csrf_token",
+    "RateLimiter",
+    "RateLimitMiddleware",
     "SecurityHeadersMiddleware",
     "RequestLoggingMiddleware",
 ]