refactor(mcp): strip sse fallback architecture in favor of pure websockets and fix nvim NDJSON bug

linux-nvim/Cargo.toml

@@ -14,3 +14,6 @@ tracing-appender = "0.2.5"
 tracing = "0.1.44"
 tracing-subscriber = "0.3.23"
 dirs = "7.0.0"
+rustls = "0.22.4"
+rustls-pki-types = "1"
+nvim-core = { path = "../nvim-core" }