fix(gameplay): use AI-generated world companions

Co-authored-by: multica-agent <github@multica.ai>

apps/worker/src/ai.test.ts

@@ -8,6 +8,17 @@ const worldFixture = () => ({
   startingLocation: { id: 'location', kind: 'location' as const, name: 'Gate', summary: 'A station beyond known space.', tags: [] as string[], secrets: [] as string[] },
   npcs: [1, 2, 3].map(index => ({ id: `npc-${index}`, kind: 'npc' as const, name: `NPC ${index}`, summary: 'A useful person with their own agenda.', tags: [], secrets: [] })),
   factions: [1, 2].map(index => ({ id: `faction-${index}`, kind: 'faction' as const, name: `Faction ${index}`, summary: 'An organization pursuing a hidden objective.', tags: [], secrets: [] })),
+  companions: [1, 2, 3].map(index => ({
+    name: `Companion ${index}`,
+    concept: `A universe-specific companion with role ${index}.`,
+    abilities: { str: 10, dex: 12, con: 11, int: 13, wis: 12, cha: 10 },
+    hp: 11,
+    maxHp: 11,
+    defense: 12,
+    proficiency: 2,
+    inventory: ['Field kit'],
+    persona: { voice: 'Distinctive and clear.', motivation: 'Help the party.', flaw: 'Has a private agenda.', bond: 'Believes in the party.' },
+  })),
   hook: 'A sufficiently long hook that immediately gives the party something to investigate.',
   hiddenThreat: 'A hidden threat waits beyond the gate.',
   openingScene: 'The gate opens without warning, and an impossible signal calls every hero by name.',
@@ -34,7 +45,10 @@ describe('worker AI providers', () => {
     })
     vi.stubGlobal('fetch', fetchMock)
     const { generateWorld } = await import('./ai')
-    await expect(generateWorld([{ role: 'user', content: 'Create a science fiction frontier.' }])).resolves.toMatchObject({ title: 'Test Reach' })
+    await expect(generateWorld([{ role: 'user', content: 'Create a science fiction frontier.' }])).resolves.toMatchObject({
+      title: 'Test Reach',
+      companions: [{ name: 'Companion 1' }, { name: 'Companion 2' }, { name: 'Companion 3' }],
+    })
     expect(fetchMock).toHaveBeenCalledWith('https://api.deepseek.com/chat/completions', expect.any(Object))
   })