swarm-ui: the moved tabs' redirects come from one table, with tests

The four tab moves each hand-wrote a redirect route. They are one table now,
MOVED_ROUTES, and movedHref says where an old address goes with its query
kept; /builds?run= still lands on the build's card. The builds page's own
redirect helper is gone.

frontend/packages/swarm-ui/src/pages/builds/builds-types.ts

@@ -37,11 +37,6 @@ export const OUTCOME_TONE: Record<BuildOutcome, BadgeTone> = {
   error: "warning",
 };
 
-/** Where an old `/builds` link goes: the jobs page, keeping its query. */
-export function jobsHref(search: string): string {
-  return search === "" ? "/jobs" : `/jobs?${search}`;
-}
-
 /** The run a `?run=<id>` query names, or `null` when it names none. */
 export function wantedRun(search: string): string | null {
   const id = new URLSearchParams(search).get("run");