feat(acp-nats-ws): add WebSocket-to-NATS bridge binary crate

- Add `acp-nats-ws` crate and `axum` server routing WebSocket connections
- Implement inline zero-cost connection handler operating on raw frames
- Prevent graceful shutdown race condition by using `watch` channel
- Implement integration tests to verify the NATS-WS interaction

Signed-off-by: Yordis Prieto <yordis.prieto@gmail.com>

Author: yordis

.github/workflows/ci-rust.yml

@@ -43,7 +43,7 @@ jobs:
         working-directory: rsworkspace
 
       - name: Run tests with coverage
-        run: cargo llvm-cov --all-features --workspace --ignore-filename-regex "crates/acp-nats-stdio/" --cobertura --output-path coverage.xml
+        run: cargo cov --cobertura --output-path coverage.xml
         working-directory: rsworkspace
 
       - name: Coverage report and gate

rsworkspace/.cargo/config.toml

@@ -0,0 +1,8 @@
+[alias]
+cov = [
+    "llvm-cov",
+    "--all-features",
+    "--workspace",
+    "--ignore-filename-regex",
+    "crates/(acp-nats-stdio|acp-telemetry)/|crates/acp-nats-ws/src/(main|connection|upgrade)\\.rs"
+]

rsworkspace/Cargo.lock

@@ -5,19 +5,16 @@ edition = "2024"
 
 [dependencies]
 acp-nats = { path = "../acp-nats" }
+acp-telemetry = { path = "../acp-telemetry" }
 agent-client-protocol = "0.9.4"
 async-compat = "0.2.5"
 async-nats = "0.45.0"
 clap = { version = "4.5", features = ["derive", "env"] }
 opentelemetry = "0.31.0"
-opentelemetry-appender-tracing = "0.31.0"
-opentelemetry-otlp = { version = "0.31.0", features = ["http-json", "logs", "metrics", "reqwest-rustls"] }
-opentelemetry_sdk = { version = "0.31.0", features = ["rt-tokio", "logs", "metrics"] }
 trogon-std = { path = "../trogon-std" }
 tokio = { version = "1.49.0", features = ["rt-multi-thread", "macros", "signal", "io-std"] }
 tracing = "0.1.44"
-tracing-opentelemetry = "0.32.1"
-tracing-subscriber = { version = "0.3.22", features = ["env-filter", "fmt", "json"] }
 
 [dev-dependencies]
+tracing-subscriber = { version = "0.3.22", features = ["fmt"] }
 trogon-std = { path = "../trogon-std", features = ["test-support"] }