Rule dialog: the less used parts behind "+" buttons

The new rule window shows chain, zones, addresses, services, family,
action, log and comment; connection state, time window, rate limit,
quota, connection limit and raw nftables open with "+" buttons (and
close with ✕, which unsets them). Editing a rule opens what it uses.
Group addresses appears only when a per-address limit, quota or
connection limit is set. Clearer help for connection state and status.

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

internal/web/static/assets/style.css

@@ -409,3 +409,6 @@ input.wide { width: 100%; }
 .diff .hunk { background: var(--hunk); color: var(--accent); }
 .diff .file { font-weight: 700; padding-top: 6px; }
 select.inline { width: auto; display: inline-block; }
+/* The rule dialog's optional parts: "+" buttons, and ✕ to close one. */
+.adders { display: flex; flex-wrap: wrap; gap: 6px; }
+button.close-section { padding: 0 6px; margin-left: 4px; font-size: 11px; line-height: 1.5; }