test(e2e): fix three cassette-fidelity gaps

- The knowledge list query is withContent:false, where the backend returns an
  empty content string; the entry served "Content for …".
- The generator and refiner prompt pairs were inverted vs the backend
  (System/Human swapped), teaching the wrong contract on two of fifteen agents.
- The GraphQL mock dropped an entry's data when it also carried errors, so a
  partial-error response could not be mocked with its data half.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/e2e/mocks/cassettes/knowledges.ts

@@ -30,7 +30,10 @@ export const makeKnowledge = (id: string, question: string): KnowledgeDocumentFr
 
 export const KNOWLEDGE_DOC = makeKnowledge('7', 'E2E Seed Question');
 
-const knowledgeDocuments: ResultOf<typeof KnowledgeDocumentsDocument> = { knowledgeDocuments: [KNOWLEDGE_DOC] };
+// The list query is withContent:false; the backend returns content:'' in that case (schema.graphqls).
+const knowledgeDocuments: ResultOf<typeof KnowledgeDocumentsDocument> = {
+    knowledgeDocuments: [{ ...KNOWLEDGE_DOC, content: '' }],
+};
 
 export const knowledgesCassette = (override: Cassette = {}): Cassette =>
     mergeCassettes(

frontend/e2e/mocks/cassettes/settings-prompts.ts

@@ -27,12 +27,12 @@ const settingsPrompts: ResultOf<typeof SettingsPromptsDocument> = {
                 assistant: agentPrompt(PromptType.Assistant),
                 coder: agentPromptPair(PromptType.Coder, PromptType.QuestionCoder),
                 enricher: agentPromptPair(PromptType.Enricher, PromptType.QuestionEnricher),
-                generator: agentPromptPair(PromptType.SubtasksGenerator, PromptType.Generator),
+                generator: agentPromptPair(PromptType.Generator, PromptType.SubtasksGenerator),
                 installer: agentPromptPair(PromptType.Installer, PromptType.QuestionInstaller),
                 memorist: agentPromptPair(PromptType.Memorist, PromptType.QuestionMemorist),
                 pentester: agentPromptPair(PromptType.Pentester, PromptType.QuestionPentester),
                 primaryAgent: agentPrompt(PromptType.PrimaryAgent),
-                refiner: agentPromptPair(PromptType.SubtasksRefiner, PromptType.Refiner),
+                refiner: agentPromptPair(PromptType.Refiner, PromptType.SubtasksRefiner),
                 reflector: agentPromptPair(PromptType.Reflector, PromptType.QuestionReflector),
                 reporter: agentPromptPair(PromptType.Reporter, PromptType.TaskReporter),
                 searcher: agentPromptPair(PromptType.Searcher, PromptType.QuestionSearcher),

frontend/e2e/mocks/install.ts

@@ -26,7 +26,10 @@ export const installMockRoutes = async (page: Page, world: MockWorld): Promise<v
 
             if (entry) {
                 await route.fulfill({
-                    json: entry.errors ? { errors: entry.errors } : { data: entry.data },
+                    json: {
+                        ...(entry.data === undefined ? {} : { data: entry.data }),
+                        ...(entry.errors ? { errors: entry.errors } : {}),
+                    },
                 });
 
                 return;