fix(updater): PostgreSQL 大版本提示改为导出再恢复并更正地址相关注释

internal/updater/postgres.go

@@ -98,7 +98,7 @@ func (p postgresFeed) latest(ctx context.Context, current updates.Version) (post
 	if !mine.Supported {
 		rel.note = fmt.Sprintf("PostgreSQL %s reached end of life on %s and gets no more fixes", key, mine.EOLDate)
 		if newest != "" {
-			rel.note += fmt.Sprintf("; the current major is %s (pg_upgrade, see docs/operations.md §4)", newest)
+			rel.note += fmt.Sprintf("; the current major is %s (a dump and restore, see docs/operations.md §4)", newest)
 		}
 	}
 	return rel, nil

internal/updater/postgres_test.go

@@ -37,7 +37,7 @@ func TestPostgresFeedComparesWithinTheMajor(t *testing.T) {
 	}{
 		{"17.4", "17.10", nil},
 		{"18.6", "18.6", nil},
-		{"13.22", "13.23", []string{"PostgreSQL 13 reached end of life on 2025-11-13", "current major is 18"}},
+		{"13.22", "13.23", []string{"PostgreSQL 13 reached end of life on 2025-11-13", "current major is 18", "dump and restore"}},
 		{"9.6.3", "9.6.24", []string{"PostgreSQL 9.6 reached end of life"}},
 	}
 	for _, c := range cases {

internal/watchdog/host.go

@@ -8,8 +8,8 @@ import (
 )
 
 const (
-	// addressFor is short: nothing reaches the database or the panel while the
-	// address is gone, so a DHCP renewal that lands on a new lease is an outage.
+	// addressFor is short: the cluster and the panel are down while the address
+	// is gone, so a DHCP renewal that lands on a new lease is an outage.
 	addressFor = 5 * time.Minute
 	// clockFor leaves room for an NTP daemon that was just enabled (by the
 	// installer, or after a reboot) to reach its first synchronization.