fix: stop the chat repeating run results the card already shows (#11293)

* fix: tell the chat not to repeat run results the card already shows

* fix: add the run result note on completion, background runs included

* fix: skip the run result note on failed runs

* fix: keep the run result note off background completions

frontend/src/lib/components/copilot/chat/shared.test.ts

@@ -1510,6 +1510,50 @@ describe('pollJobCompletion detach', () => {
 	})
 })
 
+describe('executeTestRun result note', () => {
+	// A failed run's card lands on the error, with the logs a tab away: the model must stay
+	// free to quote them, so only a success says the user already sees the run.
+	it('tells the model not to repeat a successful result, and not a failed one', async () => {
+		vi.useFakeTimers()
+		try {
+			const { executeTestRun } = await import('./shared')
+			const { JobService } = await import('$lib/gen')
+			const getJobUpdates = vi.mocked(JobService.getJobUpdates)
+			getJobUpdates.mockReset()
+			getJobUpdates.mockResolvedValue({ completed: true, running: false } as any)
+			const run = async (success: boolean) => {
+				vi.mocked(JobService.getJob).mockReset()
+				vi.mocked(JobService.getJob).mockResolvedValue({
+					type: 'CompletedJob',
+					success,
+					result: [1, 2],
+					logs: 'ran'
+				} as any)
+				const promise = executeTestRun({
+					jobStarter: async () => 'job1',
+					workspace: 'w',
+					toolId: 'tool1',
+					startMessage: 'Starting...',
+					contextName: 'script',
+					// The job hooks are what mark the global/sessions chat.
+					toolCallbacks: {
+						setToolStatus: vi.fn(),
+						removeToolStatus: vi.fn(),
+						onJobStatus: vi.fn(),
+						onJobStarted: vi.fn()
+					} as any
+				})
+				await vi.advanceTimersByTimeAsync(1000)
+				return promise
+			}
+			expect(await run(true)).toContain('Do not repeat')
+			expect(await run(false)).not.toContain('Do not repeat')
+		} finally {
+			vi.useRealTimers()
+		}
+	})
+})
+
 describe('deriveChatJobStatus', () => {
 	// CompletedJob is discriminated by the presence of a `success` key; the branch
 	// order deliberately mirrors JobStatusIcon so the badge and scalar never drift.

frontend/src/lib/components/copilot/chat/shared.ts

@@ -1871,6 +1871,15 @@ export async function buildTestRunArgs(
 	return parsedArgs
 }
 
+// Said with the result rather than in the system prompt: there, models still copied a
+// result's table or JSON into the reply, under a card that already renders it. Only for
+// a successful run in the generic card completedJobToolStatus fills: a failed run's card
+// lands on the error with the logs a tab away, and a formatCompletion card shows its own.
+// Never on a background completion: its card can be far up the chat by then, so the
+// reply may be the only place the user reads the result.
+const RESULT_SHOWN_NOTE =
+	"The user already sees this run's result in its card. Do not repeat the result or logs in your reply: say what it shows, quoting only the values your conclusion rests on."
+
 // The string handed back to the model when a job is backgrounded. It carries the
 // job id so the model can pull status/args/result/logs on demand (get_run / list_runs),
 // and tells it the completion will be reported later (notify-only wake).
@@ -2015,7 +2024,12 @@ export async function executeTestRun(config: TestRunConfig): Promise<string> {
 			...(job.success ? {} : { error: getErrorMessage(job.result) })
 		})
 
-		const summary = formatResultSummary(job.result, job.logs, job.success)
+		// detachEnabled marks the global/sessions chat; the in-editor chats read the summary
+		// alone. The card opening on the result is up to each tool: a run card does, a
+		// generic one only with `autoCollapseDetails: false` at its registration.
+		const summary =
+			(detachEnabled && job.success ? `${RESULT_SHOWN_NOTE}\n` : '') +
+			formatResultSummary(job.result, job.logs, job.success)
 		// get_run only exists in the global/sessions chat (the same hosts that wire
 		// the job hooks) — don't advertise it to in-editor chats.
 		if (detachEnabled && config.contextName === 'flow' && !job.success) {