feat(tenant): make monitoring parse & compliance judge models configurable

Replace the hardcoded doubao-lite model used for monitoring answer
parsing and compliance LLM judging with configurable values, resolved
from config with env overrides and a legacy default fallback.

- Add llm.monitoring_answer_parse_model and compliance.llm_judge_model
  to config struct, env overrides, and all config files
- Thread the resolved model through MonitoringCallbackService via a
  ConfigProvider and into parseMonitoringAnswerWithLLM
- Pass compliance.llm_judge_model into the review-job LLM request

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

server/internal/tenant/app/monitoring_callback_service_test.go

@@ -12,8 +12,26 @@ import (
 	"github.com/google/uuid"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	"github.com/geo-platform/tenant-api/internal/shared/config"
 )
 
+func TestMonitoringAnswerParseModelUsesConfig(t *testing.T) {
+	svc := (&MonitoringCallbackService{}).WithConfigProvider(config.NewStaticProvider(&config.Config{
+		LLM: config.LLMConfig{MonitoringAnswerParseModel: " configured-monitoring-model "},
+	}))
+
+	if got := svc.monitoringAnswerParseModel(); got != "configured-monitoring-model" {
+		t.Fatalf("monitoringAnswerParseModel() = %q, want configured-monitoring-model", got)
+	}
+}
+
+func TestMonitoringAnswerParseModelDefaultsToLegacyLite(t *testing.T) {
+	if got := (&MonitoringCallbackService{}).monitoringAnswerParseModel(); got != defaultMonitoringAnswerParseLLMModel {
+		t.Fatalf("monitoringAnswerParseModel() = %q, want %q", got, defaultMonitoringAnswerParseLLMModel)
+	}
+}
+
 func TestDecideHeartbeatPrimaryLease(t *testing.T) {
 	tests := []struct {
 		name  string