docs: update README with detailed desktop features and setup requirements

src/app/worker_protocol.go

@@ -24,18 +24,24 @@ const (
 )
 
 const (
-	messageReady     = "ready"
-	messageBusy      = "busy"
-	messageIdle      = "idle"
-	messageCaption   = "caption"
-	messageFailure   = "failure"
-	messageHeartbeat = "heartbeat"
+	messageReady       = "ready"
+	messageBusy        = "busy"
+	messageIdle        = "idle"
+	messageCaption     = "caption"
+	messageFailure     = "failure"
+	messageHeartbeat   = "heartbeat"
+	messageSource      = "source"
+	messageSpeech      = "speech"
+	messageRecognition = "recognition"
+	messageOverloaded  = "overloaded"
 )
 
 type workerMessage struct {
-	Type  string          `json:"type"`
-	Event *captions.Event `json:"event,omitempty"`
-	Error string          `json:"error,omitempty"`
+	Type   string          `json:"type"`
+	Event  *captions.Event `json:"event,omitempty"`
+	Error  string          `json:"error,omitempty"`
+	Value  string          `json:"value,omitempty"`
+	Active bool            `json:"active,omitempty"`
 }
 
 type workerReporter struct {
@@ -110,9 +116,13 @@ func RunModelWorker(diagnostics io.Writer) int {
 
 	reporter := &workerReporter{encoder: json.NewEncoder(protocol)}
 	hooks := directHooks{
-		ready: func() error { return reporter.send(workerMessage{Type: messageReady}) },
-		busy:  func() error { return reporter.send(workerMessage{Type: messageBusy}) },
-		idle:  func() error { return reporter.send(workerMessage{Type: messageIdle}) },
+		ready:       func() error { return reporter.send(workerMessage{Type: messageReady}) },
+		busy:        func() error { return reporter.send(workerMessage{Type: messageBusy}) },
+		idle:        func() error { return reporter.send(workerMessage{Type: messageIdle}) },
+		source:      func(value string) error { return reporter.send(workerMessage{Type: messageSource, Value: value}) },
+		speech:      func(active bool) error { return reporter.send(workerMessage{Type: messageSpeech, Active: active}) },
+		recognition: func(active bool) error { return reporter.send(workerMessage{Type: messageRecognition, Active: active}) },
+		overloaded:  func() error { return reporter.send(workerMessage{Type: messageOverloaded}) },
 	}
 
 	heartbeatInterval := time.Second