Server statistics, multi-view record commands, and rc.3 fixes

Added:
- Server statistics: named's memory and CPU (from /proc), cache size,
  sockets and client counts against their limits (statistics channel,
  rndc status), host memory and load, and free disk space. Memory and
  CPU are kept over time as gauges (sum and sample count, averaged in
  timelines). Statistics page Server section, jarl stats server,
  GET /stats/server.
- jarl record add|set|delete|disable|enable --view a,b | all: the same
  change in each view, applied as one changeset.
- Blocking can be paused until resumed (jarl block pause indefinitely,
  "Until I resume", {"indefinitely": true}).

Changed:
- List options (allow-transfer, forwarders, ...) get their braces added
  when given without them.
- The dashboard lists named-checkconf's warnings about the running
  configuration; the CLI prints them after an apply.
- Stats page: tile and card rows fill their width, and the queries and
  failed answers charts share margins so their time axes line up.
- Dashboard: options have their own tile.
- 24-hour times in the web UI.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

cmd/jarl/blocking.go

@@ -405,23 +405,40 @@ names below it (docs/blocking.md).`}
 	}
 
 	pause := &cobra.Command{
-		Use:   "pause [DURATION]",
-		Short: "Let every name through for a while (default 10m, at most 24h)",
+		Use:   "pause [DURATION | indefinitely]",
+		Short: "Let every name through for a while (default 10m, at most 24h) or until resumed",
 		Long: `Pause blocking: every name is answered normally until the time is up,
 then blocking resumes by itself. Useful to see whether blocking is what
 breaks a site. The lists stay loaded, so pausing and resuming take effect
-at once.
+at once. "indefinitely" pauses until 'jarl block resume'.
 
   jarl block pause          # 10 minutes
   jarl block pause 1h
+  jarl block pause indefinitely
   jarl block resume`,
-		Args: cobra.MaximumNArgs(1),
+		Args:      cobra.MaximumNArgs(1),
+		ValidArgs: []string{"indefinitely", "5m", "10m", "30m", "1h", "24h"},
 		RunE: func(cmd *cobra.Command, args []string) error {
+			if len(args) == 1 && args[0] == "indefinitely" {
+				c, err := newClient()
+				if err != nil {
+					return err
+				}
+				resp, err := c.Mutate(ctx(), "POST", "/blocking/pause", nil, map[string]any{"indefinitely": true})
+				if err != nil {
+					return err
+				}
+				if err := report(resp); err != nil || flagQuiet || !resp.Applied {
+					return err
+				}
+				fmt.Println("Blocking is paused until you resume it ('jarl block resume').")
+				return nil
+			}
 			d := 10 * time.Minute
 			if len(args) == 1 {
 				var err error
 				if d, err = time.ParseDuration(args[0]); err != nil || d < time.Minute {
-					return fmt.Errorf("invalid duration %q (like 10m or 2h)", args[0])
+					return fmt.Errorf("invalid duration %q (like 10m or 2h, or indefinitely)", args[0])
 				}
 			}
 			c, err := newClient()
@@ -465,9 +482,16 @@ func pausedNote(c interface {
 	Get(context.Context, string, url.Values, any) error
 }) string {
 	var st struct {
-		PausedUntil *time.Time `json:"paused_until"`
+		PausedUntil        *time.Time `json:"paused_until"`
+		PausedIndefinitely bool       `json:"paused_indefinitely"`
 	}
-	if c.Get(ctx(), "/blocking/status", nil, &st) != nil || st.PausedUntil == nil {
+	if c.Get(ctx(), "/blocking/status", nil, &st) != nil {
+		return ""
+	}
+	if st.PausedIndefinitely {
+		return "Blocking is paused until you resume it ('jarl block resume').\n"
+	}
+	if st.PausedUntil == nil {
 		return ""
 	}
 	return "Blocking is paused until " + st.PausedUntil.Local().Format("2006-01-02 15:04") + " ('jarl block resume' ends it).\n"