admin: activity history filters become a live-apply toolbar

the five-field form with its apply button is gone. one row holds a search-shaped domain field and a client ip field that debounce into the url with enter flushing at once, result segments and a time menu that commit instantly, and a clear that appears only when a filter is active without reflowing the row. presets freeze both absolute bounds at click time so a bookmark describes the same investigation later, custom ranges apply atomically through set range with inline validation, and echo queues keep in-flight commits from clobbering newer typing or newer picks. live mode renders no toolbar, the availability banner became a footer note, previous rows stay visible during refetch, and every control carries a 44px hit target.

admin/src/lib/CoverageNotice.tsx

@@ -17,6 +17,12 @@ const styles = stylex.create({
 		lineHeight: "1.25rem",
 		color: colors.textSecondary,
 	},
+	/** The same sentence with no box, for a results footer that already has one. */
+	note: {
+		fontSize: "0.875rem",
+		lineHeight: "1.25rem",
+		color: colors.textMuted,
+	},
 });
 
 /**
@@ -27,11 +33,21 @@ const styles = stylex.create({
  * watermark and nothing more: the same incompleteness covers a log retention
  * has pruned and one that simply has not been running long enough, and the
  * response does not say which.
+ *
+ * `note` is the same sentence without the panel, for a place that already sits
+ * under the data it qualifies — a results footer states the reach of the count
+ * beside it, where a full-width banner would announce a limit as news.
  */
-export default function CoverageNotice({ coverage }: { coverage: Coverage }) {
+export default function CoverageNotice({
+	coverage,
+	variant = "banner",
+}: {
+	coverage: Coverage;
+	variant?: "banner" | "note";
+}) {
 	if (coverage.complete) return null;
 	return (
-		<p role="status" {...stylex.props(styles.notice)}>
+		<p role="status" {...stylex.props(variant === "note" ? styles.note : styles.notice)}>
 			Query history is available from {formatTime(coverage.available_since)}.
 		</p>
 	);