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/NavigationProvider.dom.test.tsx

@@ -31,6 +31,8 @@ import { useBackToClose } from "../lib/history";
 import { PageHeading } from "./ui/Headings";
 
 import { qk } from "../lib/queryKeys";
+import { LS, setAccountRaw } from "../lib/storage";
+import { PAGE_KEY, START_ON_HOME } from "./navigationInit";
 
 /** The Navigation API's view of the tab: `below` = whether each entry under the current one belongs
  *  to this document, nearest first. jsdom has no Navigation API; Chrome's says this. */
@@ -239,6 +241,35 @@ describe("NavigationProvider · Back", () => {
     ]);
   });
 
+  it("carries an old server-log link's account, text and range onto the page's own filters", () => {
+    window.history.replaceState(null, "", "/?page=logs&lu=3&lq=boom&lwin=1h");
+    render();
+    const url = new URLSearchParams(window.location.search);
+    expect([url.get("at"), url.get("au"), url.get("aq"), url.get("aw")]).toEqual([
+      "logs",
+      "3",
+      "boom",
+      "1h",
+    ]);
+    // …and the dead keys leave the address bar instead of riding along to every page after.
+    expect(["lu", "lq", "lwin"].filter((k) => url.has(k))).toEqual([]);
+  });
+
+  it("an old server-log link without a range keeps the one it meant", () => {
+    window.history.replaceState(null, "", "/?page=logs");
+    render();
+    expect(new URLSearchParams(window.location.search).get("aw")).toBe("24h");
+  });
+
+  it("a remembered retired page opens its tab", () => {
+    setAccountRaw(LS.startOnHome, START_ON_HOME.off);
+    setAccountRaw(PAGE_KEY, "logs");
+    window.history.replaceState(null, "", "/");
+    const { result } = render();
+    expect(result.current.page).toBe("activity");
+    expect(new URLSearchParams(window.location.search).get("at")).toBe("logs");
+  });
+
   it("opens a retired page's tab when Back lands on its entry", () => {
     const { result } = render();
     act(() => result.current.setPage("plex"));