fix(a11y): keyboard-reachable admin log rows, range-bar marker, heatmap cells

Admin app-log rows opened their JSON detail dialog through a click-only
<tr> with no keyboard path; the Action cell now wraps a real <button>
that carries the same handler plus a descriptive aria-label, leaving
the row onClick as a pointer convenience.

The target range-bar's current-value marker showed value + band only
in a hover-only tooltip on a non-focusable div. It is now focusable
(tabIndex, role=img) with an aria-label that reuses the same value /
range / delta copy the tooltip already renders, so focus opens the
tooltip and a screen reader gets the text alternative either way.

Mood and medication-compliance heatmap day cells were pointer-only SVG
rects. Each cell is now focusable with its own per-day aria-label
(reusing the existing tooltip copy), and Escape dismisses any open
tooltip — pinned (touch) or focus-shown.

Reference: 2026-07-17 a11y audit, H1 + M1 + M2.

messages/de.json

@@ -6056,6 +6056,7 @@
         "colAction": "Aktion",
         "colDuration": "Dauer",
         "colTraceId": "Trace",
+        "viewDetails": "Details anzeigen für {action} um {timestamp}",
         "showing": "{count} von bis zu {bufferMax} gepufferten Events angezeigt",
         "empty": "Puffer ist leer",
         "emptyDescription": "Es passen noch keine Events zu den Filtern. Nach etwas Traffic auf Aktualisieren tippen.",

messages/en.json

@@ -6056,6 +6056,7 @@
         "colAction": "Action",
         "colDuration": "Duration",
         "colTraceId": "Trace",
+        "viewDetails": "View details for {action} at {timestamp}",
         "showing": "Showing {count} of up to {bufferMax} buffered events",
         "empty": "Buffer is empty",
         "emptyDescription": "No events match the current filters yet. Hit refresh after triggering some traffic.",

messages/es.json

@@ -6056,6 +6056,7 @@
         "colAction": "Acción",
         "colDuration": "Duración",
         "colTraceId": "Trace",
+        "viewDetails": "Ver detalles de {action} a las {timestamp}",
         "showing": "Mostrando {count} de hasta {bufferMax} eventos en búfer",
         "empty": "El búfer está vacío",
         "emptyDescription": "Aún no hay eventos que coincidan con los filtros actuales. Pulsa actualizar tras generar algo de tráfico.",

messages/fr.json

@@ -6056,6 +6056,7 @@
         "colAction": "Action",
         "colDuration": "Durée",
         "colTraceId": "Trace",
+        "viewDetails": "Voir les détails de {action} à {timestamp}",
         "showing": "Affichage de {count} sur jusqu'à {bufferMax} événements en mémoire tampon",
         "empty": "Le tampon est vide",
         "emptyDescription": "Aucun événement ne correspond encore aux filtres actuels. Cliquez sur Actualiser après avoir généré du trafic.",

messages/it.json

@@ -6056,6 +6056,7 @@
         "colAction": "Azione",
         "colDuration": "Durata",
         "colTraceId": "Trace",
+        "viewDetails": "Visualizza i dettagli di {action} alle {timestamp}",
         "showing": "Visualizzati {count} di un massimo di {bufferMax} eventi nel buffer",
         "empty": "Il buffer è vuoto",
         "emptyDescription": "Nessun evento corrisponde ancora ai filtri attuali. Premi Aggiorna dopo aver generato un po' di traffico.",

messages/pl.json

@@ -6056,6 +6056,7 @@
         "colAction": "Akcja",
         "colDuration": "Czas trwania",
         "colTraceId": "Trace",
+        "viewDetails": "Zobacz szczegóły dla {action} o {timestamp}",
         "showing": "Wyświetlono {count} z maksymalnie {bufferMax} buforowanych zdarzeń",
         "empty": "Bufor jest pusty",
         "emptyDescription": "Żadne zdarzenie nie pasuje jeszcze do bieżących filtrów. Kliknij Odśwież po wygenerowaniu ruchu.",