Attempt to make audio and speech discovery more robust.

internal/speech/drivers.go

@@ -17,7 +17,10 @@
 
 package speech
 
-import "fmt"
+import (
+	"context"
+	"fmt"
+)
 
 // Driver binds a stable file/CLI ID to its implementation. Availability must
 // be a cheap dependency/hardware check, never connect, speak or start a service.
@@ -83,6 +86,12 @@ func Find_driver(id string) (Driver, error) {
 }
 
 func Open_driver(id string, options Options) (Transport, error) {
+	return Open_driver_context(context.Background(), id, options)
+}
+
+// Open_driver_context bounds connection setup without binding the live client to ctx.
+func Open_driver_context(ctx context.Context, id string, options Options) (Transport, error) {
+	options.context = ctx
 	driver, err := Find_driver(id)
 	if err != nil {
 		return nil, err
@@ -93,7 +102,11 @@ func Open_driver(id string, options Options) (Transport, error) {
 	if err = driver.Availability(); err != nil {
 		return nil, fmt.Errorf("speech driver %s unavailable: %w", id, err)
 	}
-	return driver.Open(options)
+	client, err := driver.Open(options)
+	if err != nil {
+		return nil, err
+	}
+	return client, nil
 }
 
 // discover_modules uses a separate, bounded connection. It never changes the
@@ -103,7 +116,7 @@ func discover_modules(options Options) ([]string, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer wire.conn.Close()
+	defer wire.close()
 	modules, err := wire.command("LIST OUTPUT_MODULES")
 	if err != nil {
 		return nil, err