fix(activity): runs keep their true outcome and spend, the page reaches every kept row, a closing dialog leaves the server log alone

Backend
- A run's outcome write sits outside the job's own try: a database blip after a run that
  succeeded no longer records it as failed (the row waits for the next start's sweep).
- An interrupted run keeps what it spent (the sweep sums its quota rows, as finish does).
- The Scheduler's ad-hoc row says running while any backfill runs, not only the newest.
- recent_runs reads each job's last runs off its index instead of ranking the whole table.
- An interval change is stored with its audit row in one transaction, then rescheduled.
- One API instance per database is the stated contract (.env.example, jobruns).
- Turning full history on for a channel already complete records no run.
- Migration 0109 round-trips interrupted and ad-hoc runs; the run words' DB CHECKs are
  test-held to the enums; the account filter is one helper for the four activity reads.
- An audit row says how many of its request's log lines are still kept.

Frontend
- An "All" period reaches every row still kept (runs and admin actions outlive 90 days).
- Back/Forward is followed in place by the server log: a closing dialog no longer turns
  Live off; a pivot still opens a fresh log.
- Runs moved over from the audit log read their one-liner in the reader's language.
- Filter choices or accounts that failed to load say so beside the filters, with a retry.
- An old server-log link keeps its account, text and range; a remembered retired page
  opens its tab.
- A request whose lines are gone says so instead of linking to an empty list.
- The log lines and the history rows share one row frame, and the server log one list
  frame with the other tabs; an empty list is announced; each day's quota is readable.

frontend/src/components/ActivityAudit.tsx

@@ -13,6 +13,7 @@ import { qk } from "../lib/queryKeys";
 import { useHistoryList } from "../lib/useHistoryList";
 import type { Shared } from "./ActivityRuns";
 import { useConfirm } from "./confirmContext";
+import { StateMessage } from "./ui/QueryState";
 import HistoryList from "./HistoryList";
 import HistoryRow from "./HistoryRow";
 import { RelativeTime } from "./ui/RelativeTime";
@@ -67,8 +68,8 @@ export default function ActivityAudit({
   const clear = useMutation({
     mutationFn: () => api.clearAudit(),
     onSuccess: (r) => {
-      void qc.invalidateQueries({ queryKey: ["admin-audit"] });
-      void qc.invalidateQueries({ queryKey: ["admin-audit-facets"] });
+      void qc.invalidateQueries({ queryKey: qk.adminAudit() });
+      void qc.invalidateQueries({ queryKey: qk.adminAuditFacets() });
       notify({ level: "success", message: t("audit.cleared", { count: r.cleared }) });
     },
     onError: (e) => notifyActionError(e, t("audit.clearFailed")),
@@ -115,6 +116,12 @@ export default function ActivityAudit({
           {t("audit.clear")}
         </Button>
       </div>
+      {/* The action menu above is built from these counts: without them it offers only "Any". */}
+      {facets.isError && (
+        <StateMessage tone="error" compact onRetry={() => void facets.refetch()}>
+          {t("activity.filtersFailed")}
+        </StateMessage>
+      )}
       <HistoryList
         state={state}
         empty={t("audit.empty")}
@@ -161,7 +168,6 @@ export default function ActivityAudit({
           );
         })}
       </HistoryList>
-      {facets.isError && <p className="text-2xs text-danger">{t("activity.countsFailed")}</p>}
     </div>
   );
 }
@@ -203,17 +209,21 @@ function AuditDetail({
           {JSON.stringify({ before: row.before, after: row.after }, null, 2)}
         </pre>
       )}
-      {row.request_id && (
-        <div>
-          <Button
-            variant="link"
-            className="underline decoration-dotted underline-offset-2 hover:decoration-solid"
-            onClick={() => onRequest(row.request_id!)}
-          >
-            {t("activity.audit.requestLines")}
-          </Button>
-        </div>
-      )}
+      {/* A request's lines are kept days, its row months: a link to none would open an empty list. */}
+      {row.request_id &&
+        (row.log_lines > 0 ? (
+          <div>
+            <Button
+              variant="link"
+              className="underline decoration-dotted underline-offset-2 hover:decoration-solid"
+              onClick={() => onRequest(row.request_id!)}
+            >
+              {t("activity.audit.requestLines")}
+            </Button>
+          </div>
+        ) : (
+          <p>{t("activity.audit.noRequestLines")}</p>
+        ))}
     </div>
   );
 }