v0.15.5: Fix startup hub report — Push() returns real errors, startup retries 3x with 15s delay

controller/internal/report/pusher.go

@@ -36,7 +36,6 @@ func NewPusher(cfg *config.HubConfig, logger *log.Logger) *Pusher {
 }
 
 // Push sends a report to the hub. Retries 3 times with 5s backoff.
-// Never returns error to caller — push failures should not affect controller operation.
 func (p *Pusher) Push(report *Report) error {
 	if !p.enabled {
 		return nil
@@ -44,8 +43,7 @@ func (p *Pusher) Push(report *Report) error {
 
 	data, err := json.Marshal(report)
 	if err != nil {
-		p.logger.Printf("[WARN] Hub report marshal failed: %v", err)
-		return nil
+		return fmt.Errorf("marshal report: %w", err)
 	}
 
 	url := p.hubURL + "/api/v1/report"
@@ -81,8 +79,7 @@ func (p *Pusher) Push(report *Report) error {
 		lastErr = fmt.Errorf("HTTP %d", resp.StatusCode)
 	}
 
-	p.logger.Printf("[WARN] Hub report push failed after 3 attempts: %v", lastErr)
-	return nil
+	return fmt.Errorf("hub push failed after 3 attempts: %w", lastErr)
 }
 
 // PushOnce sends a single report regardless of the enabled flag.