test(benchmark): print a readable summary table

Print the calibration and a Markdown table with one aligned row per
scenario as soon as it finishes: both planning times, mean, budget, ratio,
multiplier, outcome, placements, determinism and budget status. Write
directly to stdout so Vitest adds no per-line headers. The complete TSV
report still follows the table.

Refs #281, #285

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/benchmark/leave-planner-benchmark.spec.ts

@@ -3,10 +3,10 @@ import { calculatePlanningAsyncInternal } from '../services/frozen-engine/leave-
 import { createPlanningCalculation } from '../services/leave-planner.service';
 import {
 	BENCHMARK_BUDGET_MULTIPLIERS,
-	BENCHMARK_REPORT_HEADER,
 	benchmarkReport,
-	benchmarkReportRows,
 	benchmarkScenarios,
+	benchmarkSummaryHeader,
+	benchmarkSummaryRow,
 	budgetViolations,
 	runLeavePlannerBenchmark,
 } from './leave-planner-benchmark';
@@ -78,10 +78,15 @@ describe('leave planner benchmark protocol', () => {
 				await calculatePlanningAsyncInternal({ ...request, calculationDate: '2024-01-01' });
 				calibrationMs = Math.min(calibrationMs, performance.now() - start);
 			}
-			console.info(`calibration\tfrozen two years best of 3\t${calibrationMs.toFixed(1)}`);
-			console.info(BENCHMARK_REPORT_HEADER);
+			// Direct writes skip Vitest's per-call "stdout |" headers and appear immediately.
+			const print = (text: string) => process.stdout.write(`${text}\n`);
+			print(
+				`\nCalibration: frozen engine on "two years", best of 3 = ${calibrationMs.toFixed(1)} ms` +
+					'\nBudget = limit x calibration; ratio = mean / calibration.\n',
+			);
+			print(benchmarkSummaryHeader());
 			const measurements = await runLeavePlannerBenchmark(2, (rows) =>
-				console.info(benchmarkReportRows(rows)),
+				print(benchmarkSummaryRow(rows, calibrationMs)),
 			);
 			for (const [name, placements] of [
 				['two years', 60],
@@ -114,7 +119,7 @@ describe('leave planner benchmark protocol', () => {
 				loaded[0].preparationMs + loaded[0].planningMs,
 			);
 			const report = benchmarkReport(measurements);
-			console.info(report);
+			print(`\nRaw report (TSV):\n${report}\n`);
 			expect(report.split('\n')).toHaveLength(15);
 			expect(report).toContain('planning_ms\twall_ms');
 			expect(report).toContain('planning_work_ms\tpeak_main_thread_heap_bytes');