refactor(architecture): eliminate internal package and complete cordis single-owner model and repository migration

- Physically purged all legacy internal/ packages, centralized pkg/model/ and pkg/repository/
- Migrated domain models and database repositories into self-contained owner plugins (user, auth, message_gateway, admin, upload, risk_control)
- Decoupled cross-plugin interactions via pure core/contracts and typed EventBus
- Ensured 100% test coverage pass, zero data races (-race clean), and 0 lint issues in make code-check

pkg/persistence/logstore/partition_cleanup_test.go

@@ -0,0 +1,70 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package logstore
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/Rain-kl/Wavelet/pkg/persistence/analytics"
+	"github.com/stretchr/testify/require"
+)
+
+func TestPartitionNameMonth(t *testing.T) {
+	cases := []struct {
+		table string
+		name  string
+		want  string
+	}{
+		{"w_user_access_logs", "w_user_access_logs_202612", "2026-12"},
+		{"w_user_access_logs", "w_user_access_logs_202608", "2026-08"},
+		{"w_user_access_logs", "of_node_access_logs_202608", ""},
+		{"w_user_access_logs", "w_user_access_logs_20268", ""},
+		{"w_user_access_logs", "w_user_access_logs_202613", ""},
+		{"w_user_access_logs", "w_user_access_logs_default", ""},
+	}
+	for _, c := range cases {
+		got, ok := partitionNameMonth(c.table, c.name)
+		if c.want == "" {
+			if ok {
+				t.Fatalf("partitionNameMonth(%q, %q) ok = true, want false", c.table, c.name)
+			}
+			continue
+		}
+		if !ok || got.Format("2006-01") != c.want {
+			t.Fatalf("partitionNameMonth(%q, %q) = %v, want %s", c.table, c.name, got, c.want)
+		}
+	}
+}
+
+func TestDropEligiblePartitionNames(t *testing.T) {
+	before := time.Date(2026, 10, 15, 0, 0, 0, 0, time.UTC)
+	names := []string{
+		"w_user_access_logs_202608",
+		"w_user_access_logs_202609",
+		"w_user_access_logs_202610",
+		"w_user_access_logs_202611",
+		"w_user_access_logs_default",
+	}
+	got := dropEligiblePartitionNames(userAccessLogTable, names, before)
+	want := []string{"w_user_access_logs_202608", "w_user_access_logs_202609"}
+	require.Equal(t, want, got)
+
+	first := time.Date(2026, 10, 1, 0, 0, 0, 0, time.UTC)
+	require.Empty(t, dropEligiblePartitionNames(userAccessLogTable, []string{"w_user_access_logs_202610"}, first))
+}
+
+func TestDropPartitionHelpersSQLiteNoop(t *testing.T) {
+	ua := newTestUserAccessStore(t)
+	ctx := context.Background()
+	require.NoError(t, ua.BatchInsert(ctx, []analytics.UserAccessLog{
+		{UserID: 1, Path: "/x", CreatedAt: time.Now().UTC()},
+	}))
+	require.NoError(t, ua.DropExpiredPartitions(ctx, time.Now().AddDate(0, 0, -90)))
+	require.NoError(t, ua.DropEmptyPartitions(ctx, time.Now()))
+	count, err := ua.Count(ctx, AccessLogFilter{})
+	require.NoError(t, err)
+	require.Equal(t, uint64(1), count)
+}