Report: drop Stage 0 lane, flip 5→1 axis, fix Actual label clipping

DateTimeline now skips section rank 0 (intake) and renders stage lanes
top-to-bottom 5→1, matching how the framework actually numbers stages.

MembershipChart's latest-Actual label was placed at the circle's
x + 6, which overflowed the SVG when the most-recent point landed near
the right padding. Anchor it to xOf(maxT) - 4 with textAnchor="end",
mirroring the Goal label so both endpoint labels stay inside the chart.

components/report/MembershipChart.tsx

@@ -281,11 +281,14 @@ export function MembershipChart({
           />
         ))}
 
-        {/* Most-recent point value labels */}
+        {/* Most-recent point value labels. Both anchor to the chart's right
+            edge so the carry-forward endpoint label stays inside the viewBox
+            instead of overflowing past the right padding. */}
         {actualCoords.length > 0 && (
           <text
-            x={actualCoords[actualCoords.length - 1].x + 6}
+            x={xOf(maxT) - 4}
             y={actualCoords[actualCoords.length - 1].y - 6}
+            textAnchor="end"
             className="fill-leaf-800 text-[10px] font-medium tabular-nums"
           >
             {numberFmt.format(actualCoords[actualCoords.length - 1].v)}