Money forecast: calm optimistic start, rising plateau, thin solid projected lines

- Optimistic: no crash or correction through 2031 (5 years from today), earning the
  9.5% average; cycle resumes after (correction 2035, crash 2040). Salary plateau
  grows 2%/yr real so pay never stalls.
- Realistic keeps its single -30% crash in 2029; pessimistic unchanged.
- Projected lines are now thin, slightly lighter solid lines in every view; legend updated.
- Explanation text lists the crash/correction years and recovery time.

src/lib/money-tracker/charts.ts

@@ -15,8 +15,8 @@ export type ChartSeries = {
 	color: string;
 	points: ChartPoint[];
 	emphasis?: boolean;
-	/** Points after this date are drawn dashed (projected). */
-	dashedFrom?: string;
+	/** Points after this date are projected: drawn as a thinner, lighter solid line. */
+	projectedFrom?: string;
 };
 
 const palette = ['#0070f3', '#e5484d', '#46a758', '#ad7f00', '#8e4ec6', '#0091ad', '#e56910'];
@@ -283,7 +283,7 @@ export function wealthProjection(
 /**
  * Thins long series for drawing: per time bucket only the lowest and highest point stay (in
  * date order), so a daily projection over decades keeps its spikes without plotting every day.
- * The first and last points and the solid/dashed join are always kept.
+ * The first and last points and the actual/projected join are always kept.
  */
 export function decimateSeries(series: ChartSeries[], buckets: number): ChartSeries[] {
 	const limit = Math.max(2, Math.floor(buckets)) * 2;
@@ -301,8 +301,8 @@ export function decimateSeries(series: ChartSeries[], buckets: number): ChartSer
 		const keep = new Uint8Array(line.points.length);
 		keep[0] = 1;
 		keep[line.points.length - 1] = 1;
-		if (line.dashedFrom) {
-			const join = line.points.findLastIndex((point) => point.date <= line.dashedFrom!);
+		if (line.projectedFrom) {
+			const join = line.points.findLastIndex((point) => point.date <= line.projectedFrom!);
 			if (join >= 0) keep[join] = 1;
 		}
 		let bucket = -1;
@@ -334,7 +334,7 @@ export function decimateSeries(series: ChartSeries[], buckets: number): ChartSer
 export type TimelineView = 'total' | 'split' | 'accounts';
 
 /**
- * Joins actual history (solid, through today) with the wealth projection (dashed, after
+ * Joins actual history (solid, through today) with the wealth projection (thin solid line, after
  * today) so both read as one continuous line per measure.
  */
 export function wealthTimeline(
@@ -379,7 +379,7 @@ export function wealthTimeline(
 		label: 'Total',
 		color: 'var(--site-text)',
 		emphasis: true,
-		dashedFrom: today,
+		projectedFrom: today,
 		points: join(history.at(-1)!.points, totalProjection?.points ?? [])
 	};
 	if (view === 'accounts')
@@ -395,13 +395,13 @@ export function wealthTimeline(
 			{
 				label: 'Spendable',
 				color: '#46a758',
-				dashedFrom: today,
+				projectedFrom: today,
 				points: join(sumKind(false), spendableProjection?.points ?? [])
 			},
 			{
 				label: 'Invested',
 				color: '#8e4ec6',
-				dashedFrom: today,
+				projectedFrom: today,
 				points: join(sumKind(true), investedProjection?.points ?? [])
 			}
 		];