Derive meta-description hours from Hours & Visit data instead of hardcoding

The <meta description>, og:description, and twitter:description tags all
had "Open Thursday through Saturday, 4–10pm" typed in by hand, so editing
hours in the admin panel silently left the page's search/social preview
copy wrong.

Added hours_meta_summary() to inc/hours.php, built from the same
group_hours_into_ranges() grouping the Hours & Visit card and footer
already use, so all three now read the live pub_hours data and stay in
sync with whatever's set under Hours & Visit.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

inc/hours.php

@@ -263,6 +263,82 @@ function day_abbr_range(array $days, string $dash = ' – '): string {
     return HOURS_DAY_ABBR[$days[0]] . $dash . HOURS_DAY_ABBR[end($days)];
 }
 
+/**
+ * "4pm" / "4:30pm" — tight, lowercase, no leading-zero-minute clutter.
+ * Used only by format_time_range_compact() below for the meta-description
+ * summary's condensed style; the site's on-page hours use format_time_12h
+ * instead, which keeps a space and uppercase AM/PM.
+ */
+function format_hour_compact(int $hour, int $minute): string {
+    $period = $hour >= 12 ? 'pm' : 'am';
+    $hour12 = $hour % 12;
+    if ($hour12 === 0) {
+        $hour12 = 12;
+    }
+    if ($minute === 0) {
+        return "{$hour12}{$period}";
+    }
+    return sprintf('%d:%02d%s', $hour12, $minute, $period);
+}
+
+/**
+ * "4–10pm" (or "11am–2pm" when the two ends straddle noon) — same single
+ * trailing-meridiem rule as format_time_range(), but compact/lowercase to
+ * match the site's existing meta-description copy style.
+ */
+function format_time_range_compact(string $openTime, string $closeTime): string {
+    [$openHour, $openMin] = array_map('intval', explode(':', $openTime));
+    [$closeHour, $closeMin] = array_map('intval', explode(':', $closeTime));
+    $openPeriod = $openHour >= 12 ? 'pm' : 'am';
+    $closePeriod = $closeHour >= 12 ? 'pm' : 'am';
+
+    $openLabel = format_hour_compact($openHour, $openMin);
+    $closeLabel = format_hour_compact($closeHour, $closeMin);
+
+    if ($openPeriod === $closePeriod) {
+        $openLabel = substr($openLabel, 0, -strlen($openPeriod));
+    }
+
+    return "{$openLabel}–{$closeLabel}";
+}
+
+/**
+ * "Thursday" for a single day, "Thursday through Saturday" for a run —
+ * the full-name equivalent of day_abbr_range(), for prose summaries.
+ */
+function day_name_range(array $days): string {
+    if (count($days) === 1) {
+        return HOURS_DAY_NAMES[$days[0]];
+    }
+    return HOURS_DAY_NAMES[$days[0]] . ' through ' . HOURS_DAY_NAMES[end($days)];
+}
+
+/**
+ * "Open Thursday through Saturday, 4–10pm." — the one-line summary used in
+ * <meta name="description">, og:description and twitter:description, built
+ * from the same day groupings as the rest of this file so the blurb search
+ * engines and social previews show always matches whatever's actually set
+ * in Hours & Visit / the admin hours page, instead of hand-typed copy that
+ * can silently drift out of date.
+ */
+function hours_meta_summary(array $hoursByDay): string {
+    $openGroups = array_values(array_filter(
+        group_hours_into_ranges($hoursByDay),
+        fn(array $group): bool => $group['is_open']
+    ));
+
+    if (empty($openGroups)) {
+        return 'Check our Facebook page for current hours.';
+    }
+
+    $parts = [];
+    foreach ($openGroups as $group) {
+        $parts[] = day_name_range($group['days']) . ', ' . format_time_range_compact($group['data']['open_time'], $group['data']['close_time']);
+    }
+
+    return 'Open ' . implode('; ', $parts) . '.';
+}
+
 /**
  * "Kitchen closes at 9 PM" — or, if open days don't all share one kitchen
  * closing time, one clause per distinct time naming which days it applies