feat(collectors) basic implementation of boring collectors; sender via http(s) to hard coded api route

internal/sender/logging.go

@@ -0,0 +1,33 @@
+package sender
+
+import (
+	"context"
+	"log"
+
+	"bugs.watch/agent/internal/aggregate"
+)
+
+// LoggingSender sends snapshots to the local log.
+// This is a stand-in for HTTP or disk-backed senders.
+type LoggingSender struct{}
+
+func NewLoggingSender() *LoggingSender {
+	return &LoggingSender{}
+}
+
+func (s *LoggingSender) Send(ctx context.Context, snap aggregate.Snapshot) error {
+	select {
+	case <-ctx.Done():
+		// Context cancelled. Best effort: do not block shutdown.
+		return ctx.Err()
+	default:
+		log.Printf(
+			"SEND cpu=%.2f%% mem=%.2f%% disk=%.2f%% uptime=%ds",
+			snap.CPUAvg,
+			snap.MemAvg,
+			snap.DiskAvg,
+			snap.Uptime,
+		)
+		return nil
+	}
+}