Migrate logging to go-mana-component; delete logging/ package

Replaces the flat key-value logging scheme with component-based structured
logging via go-mana-component. Each layer (pool, worker, connection) builds
its own component identity and derives a *slog.Logger from a caller-supplied
slog.Handler.

- Delete logging/ package (logging.go, logging_test.go)
- Strip LoggingEnabled and LogLevel from ConnectionConfig, PoolConfig,
 WorkerConfig; remove associated option funcs
- Change NewConnection and NewConnectionFromSocket to accept ctx and
 slog.Handler instead of *slog.Logger; constructors build component
 identity via MustNew/MustExtend internally
- Change WorkerFactory, NewWorker, connect, and RunDialer to carry
 slog.Handler; remove PoolPlugin.Handler
- Change NewPool to establish pool component identity via MustNew;
 remove pool_id field, PoolPlugin.ID, and ErrInvalidPoolID
- Fix data race in MockSlogHandler: WithAttrs now shares parent mutex
 pointer rather than allocating a new one per child
- Run go fix

transport/connection_close_test.go

@@ -2,6 +2,7 @@ package transport
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"git.wisehodl.dev/jay/go-honeybee/honeybeetest"
 	"github.com/gorilla/websocket"
@@ -11,7 +12,7 @@ import (
 
 func TestDisconnectedConnectionClose(t *testing.T) {
 	t.Run("close succeeds on disconnected connection", func(t *testing.T) {
-		conn, err := NewConnection("ws://test", nil, nil)
+		conn, err := NewConnection(context.Background(), "ws://test", nil, nil)
 		assert.NoError(t, err)
 		assert.Equal(t, StateDisconnected, conn.State())
 
@@ -20,7 +21,7 @@ func TestDisconnectedConnectionClose(t *testing.T) {
 	})
 
 	t.Run("close is idempotent", func(t *testing.T) {
-		conn, err := NewConnection("ws://test", nil, nil)
+		conn, err := NewConnection(context.Background(), "ws://test", nil, nil)
 		assert.NoError(t, err)
 
 		conn.Close()
@@ -29,7 +30,7 @@ func TestDisconnectedConnectionClose(t *testing.T) {
 	})
 
 	t.Run("close with nil socket", func(t *testing.T) {
-		conn, err := NewConnection("ws://test", nil, nil)
+		conn, err := NewConnection(context.Background(), "ws://test", nil, nil)
 		assert.NoError(t, err)
 		assert.Nil(t, conn.socket)
 
@@ -44,7 +45,7 @@ func TestDisconnectedConnectionClose(t *testing.T) {
 			return expectedErr
 		}
 
-		conn, err := NewConnection("ws://test", nil, nil)
+		conn, err := NewConnection(context.Background(), "ws://test", nil, nil)
 		assert.NoError(t, err)
 		conn.socket = mockSocket
 
@@ -53,7 +54,7 @@ func TestDisconnectedConnectionClose(t *testing.T) {
 	})
 
 	t.Run("channels close after close", func(t *testing.T) {
-		conn, err := NewConnection("ws://test", nil, nil)
+		conn, err := NewConnection(context.Background(), "ws://test", nil, nil)
 		assert.NoError(t, err)
 
 		conn.Close()
@@ -66,7 +67,7 @@ func TestDisconnectedConnectionClose(t *testing.T) {
 	})
 
 	t.Run("send fails after close", func(t *testing.T) {
-		conn, err := NewConnection("ws://test", nil, nil)
+		conn, err := NewConnection(context.Background(), "ws://test", nil, nil)
 		assert.NoError(t, err)
 
 		conn.Close()