feat: publish standalone worker

Separate worker packaging and service lifecycle from the control plane.

app/models/check_metric_test.go

@@ -0,0 +1,42 @@
+package models
+
+import (
+	"testing"
+	"unicode"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCheckMetricName(t *testing.T) {
+	tests := []struct {
+		kind string
+		want string
+	}{
+		{"http", "chttp"},
+		{"ssl", "cssl"},
+		{"bssl", "cbssl"},
+		{"ssh", "cssh"},
+		{"ftp", "cftp"},
+		{"dns", "cdns"},
+		{"whois", "cwhois"},
+		{"rkn", "crkn"},
+		{"llm", "cllm"},
+		{"llm-http", "cllm_http"},
+		{"weird-kind", "cweird_kind"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.kind, func(t *testing.T) {
+			c := &Check{Kind: tt.kind, ID: 1}
+			got := c.MetricName()
+			assert.Equal(t, tt.want, got, "MetricName() for kind %q", tt.kind)
+
+			metric := got
+			for _, ch := range metric {
+				if !unicode.IsLetter(ch) && !unicode.IsDigit(ch) && ch != '_' && ch != ':' {
+					t.Errorf("metric name %q contains invalid character %q", metric, ch)
+				}
+			}
+		})
+	}
+}