feat(planning): make optimization rules composable

Evaluate explicit, ordered optimization configurations through one shared
planner model. Add six editable presets, durable one-time legacy migration,
and consistent completed and cancelled plan provenance.

Include functional regressions and the agreed trace-removal and benchmark
follow-up specs. Performance acceptance remains in #78 under unchanged gates.

Refs: #70, #71, #72, #73, #74, #75, #76, #77, #78

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

@@ -4,6 +4,7 @@ import {
 	PlanningRequest,
 	PlanningTrace,
 } from '../services/leave-planner.service';
+import { createOptimizationPresetRules } from '../services/rule-service';
 
 export interface BenchmarkScenario {
 	name: string;
@@ -47,7 +48,8 @@ const balance = (
 
 export function benchmarkScenarios(): BenchmarkScenario[] {
 	const horizon = { start: '2024-01-01', end: '2025-01-01' };
-	return [
+	const presets = createOptimizationPresetRules();
+	const scenarios: BenchmarkScenario[] = [
 		{
 			name: 'representative year',
 			request: {
@@ -169,6 +171,13 @@ export function benchmarkScenarios(): BenchmarkScenario[] {
 			}),
 		),
 	];
+	return scenarios.map((scenario) => ({
+		...scenario,
+		request: {
+			...scenario.request,
+			rules: [presets[0], ...scenario.request.rules, ...presets.slice(1)],
+		},
+	}));
 }
 
 function resultSummary(outcome: PlanningOutcome): {