Tell a search that gave up from a route that is not there

The route search stops after MAX_VISITED stars and returned null, which everything downstream read
as "the catalogue holds no chain". On the real catalogue that was wrong for real questions: Sol to
HD 120147 (136 pc) at 5 pc is 50 jumps, and the panel said there was no route. The budget also sat
under what the shipped catalogue needs, so it is now 40 000 rather than 20 000: both that route and
a star at 170 pc are found, and Sol to HD 2626 at 6 pc, which used to be refused after 4.7 s, plots
56 jumps in about 2 s.

A search now reports whether it gave up. The range search no longer counts a give-up as proof that
nothing routes below it — that is what reported ranges up to 29% too wide — and it stops after two
of them, since those are the probes that cost the most and settle the least: for HD 2626 at 3 pc it
offers 5.92 pc in about 4 s, against 6.13 pc in 4.7 s. At the panel's widest range the refused route
and the range search are the same question, so it is asked once. Where nothing can be said, the
panel says "Too many stars to search at this range." rather than claiming there is no route.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016jxMkwA2rbicdGxHosecYi

src/app/features/galaxy-system/galaxy-system-scene.component.spec.ts

@@ -423,7 +423,7 @@ describe('GalaxySystemSceneComponent camera-flight transitions', () => {
     const refocus = vi.spyOn(StarFieldRenderer.prototype, 'refocus');
     await advanceFrames(engine, 0.3);
 
-    component.routeResult.set({ stars: [{ id: SUN.id, name: 'Sol' }, { id: PROXIMA.id, name: 'Proxima Centauri' }], totalPc: 1.3, neededRangePc: null });
+    component.routeResult.set({ stars: [{ id: SUN.id, name: 'Sol' }, { id: PROXIMA.id, name: 'Proxima Centauri' }], totalPc: 1.3, neededRangePc: null, gaveUp: false });
     await advanceFrames(engine, 0.3);
 
     // As catalogue indices: the Sun is the first entry of STARS, Proxima the third.
@@ -473,7 +473,7 @@ describe('GalaxySystemSceneComponent camera-flight transitions', () => {
       expect(links.mock.calls[1][1]).not.toBe(links.mock.calls[0][1]);
 
       // A route re-chooses the drawn stars around its pins, and here they come out the same: no new graph.
-      component.routeResult.set({ stars: [{ id: SUN.id, name: 'Sol' }], totalPc: 0, neededRangePc: null });
+      component.routeResult.set({ stars: [{ id: SUN.id, name: 'Sol' }], totalPc: 0, neededRangePc: null, gaveUp: false });
       await advanceFrames(engine, 0.3);
       await settle();
       expect(links).toHaveBeenCalledTimes(2);
@@ -595,12 +595,12 @@ describe('GalaxySystemSceneComponent camera-flight transitions', () => {
   });
 
   it('shows the answer to the latest route asked for, whatever order the answers arrive in', async () => {
-    type Answer = { route: { stars: number[]; totalPc: number; longestHopPc: number } | null; neededRangePc: number | null };
+    type Answer = { route: { stars: number[]; totalPc: number; longestHopPc: number } | null; neededRangePc: number | null; gaveUp: boolean };
     const answers: Array<(answer: Answer) => void> = [];
     const component = fixture.componentInstance as unknown as {
       routing: { route(): Promise<Answer>; links(): Promise<Float32Array>; dispose(): void };
       routePending(): boolean;
-      routeResult(): { stars: { id: number }[] } | null;
+      routeResult(): { stars: { id: number }[]; gaveUp: boolean } | null;
       onRouteRequested(request: { fromId: number; toId: number; rangePc: number }): void;
     };
     component.routing = {
@@ -613,13 +613,19 @@ describe('GalaxySystemSceneComponent camera-flight transitions', () => {
     component.onRouteRequested({ fromId: SUN.id, toId: PROXIMA.id, rangePc: 2 });
     expect(component.routePending()).toBe(true);
 
-    answers[1]({ route: { stars: [SUN.id, PROXIMA.id], totalPc: 1.3, longestHopPc: 1.3 }, neededRangePc: null });
+    answers[1]({ route: { stars: [SUN.id, PROXIMA.id], totalPc: 1.3, longestHopPc: 1.3 }, neededRangePc: null, gaveUp: false });
     await flushAsync();
-    answers[0]({ route: { stars: [SUN.id, ALPHA_CENTAURI.id], totalPc: 1.34, longestHopPc: 1.34 }, neededRangePc: null });
+    answers[0]({ route: { stars: [SUN.id, ALPHA_CENTAURI.id], totalPc: 1.34, longestHopPc: 1.34 }, neededRangePc: null, gaveUp: false });
     await flushAsync();
 
     expect(component.routeResult()?.stars.map((star) => star.id)).toEqual([SUN.id, PROXIMA.id]);
     expect(component.routePending()).toBe(false);
+
+    // "It gave up" travels to the panel, which says something else for it than for "there is none".
+    component.onRouteRequested({ fromId: SUN.id, toId: ALPHA_CENTAURI.id, rangePc: 0.5 });
+    answers[2]({ route: null, neededRangePc: null, gaveUp: true });
+    await flushAsync();
+    expect(component.routeResult()).toMatchObject({ stars: [], gaveUp: true });
   });
 
   it('releases the routes panel when a route cannot be worked out, so it can be tried again', async () => {