Add websocket handler on server, connect from client

Additionally add /test handler that triggers server->client WS message

Cargo.lock

@@ -448,6 +448,40 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "axum-extra"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45bf463831f5131b7d3c756525b305d40f1185b688565648a92e1392ca35713d"
+dependencies = [
+ "axum 0.8.3",
+ "axum-core 0.5.2",
+ "bytes 1.10.1",
+ "futures-util",
+ "headers",
+ "http 1.3.1",
+ "http-body 1.0.1",
+ "http-body-util",
+ "mime",
+ "pin-project-lite",
+ "rustversion",
+ "serde",
+ "tower 0.5.2",
+ "tower-layer",
+ "tower-service",
+]
+
+[[package]]
+name = "axum-macros"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "604fde5e028fea851ce1d8570bbdc034bec850d157f7569d10f347d06808c05c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.100",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.74"
@@ -1952,6 +1986,19 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a8d1add55171497b4705a648c6b583acafb01d58050a51727785f0b2c8e0a2b2"
 
+[[package]]
+name = "gloo-console"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a17868f56b4a24f677b17c8cb69958385102fa879418052d60b50bc1727e261"
+dependencies = [
+ "gloo-utils 0.2.0",
+ "js-sys",
+ "serde",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
 name = "gloo-events"
 version = "0.1.2"
@@ -2228,6 +2275,30 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "headers"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "322106e6bd0cba2d5ead589ddb8150a13d7c4217cf80d7c4f682ca994ccc6aa9"
+dependencies = [
+ "base64 0.21.7",
+ "bytes 1.10.1",
+ "headers-core",
+ "http 1.3.1",
+ "httpdate",
+ "mime",
+ "sha1",
+]
+
+[[package]]
+name = "headers-core"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54b4a22553d4242c49fddb9ba998a99962b5cc6f22cb5a3482bec22522403ce4"
+dependencies = [
+ "http 1.3.1",
+]
+
 [[package]]
 name = "heck"
 version = "0.4.1"
@@ -2977,6 +3048,8 @@ dependencies = [
  "async-graphql-axum",
  "async-trait",
  "axum 0.8.3",
+ "axum-extra",
+ "axum-macros",
  "build-info",
  "build-info-build",
  "cacher",
@@ -2984,6 +3057,7 @@ dependencies = [
  "clap",
  "css-inline",
  "futures 0.3.31",
+ "headers",
  "html-escape",
  "letterbox-notmuch",
  "letterbox-shared",
@@ -3027,6 +3101,7 @@ dependencies = [
  "chrono",
  "console_error_panic_hook",
  "console_log",
+ "gloo-console",
  "gloo-net",
  "graphql_client",
  "human_format",