chore: establish local platform baseline

internal/health/checker_test.go

@@ -0,0 +1,22 @@
+package health
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+)
+
+func TestReadyReportsDependencyFailure(t *testing.T) {
+	checker := NewChecker(time.Second, map[string]CheckFunc{
+		"database": func(context.Context) error { return nil },
+		"redis":    func(context.Context) error { return errors.New("unavailable") },
+	})
+	result := checker.Ready(context.Background())
+	if result.Status != "not_ready" {
+		t.Fatalf("status = %s, want not_ready", result.Status)
+	}
+	if result.Checks["database"] != "up" || result.Checks["redis"] != "down" {
+		t.Fatalf("unexpected checks: %#v", result.Checks)
+	}
+}