Restart numbering for individuals after each subheading

Modify attendee numbering logic to reset at each subheading, ensuring proper sequence and display across different views and PDF outputs.

artifacts/api-server/src/lib/pdf-renderer.ts

@@ -531,15 +531,19 @@ export async function renderSchedulePdf(input: RenderPdfInput): Promise<Buffer>
           meeting.attendees.length === 0
             ? "—"
             : (() => {
-                // Walking person counter — subheadings are non-numbered
-                // labels, so they don't advance the index. Same logic as
-                // the on-screen AttendeeFlow and the print page.
+                // Walking person counter — each subheading starts a
+                // fresh numbered section, so persons restart at 1- after
+                // every subheading. Same logic as the on-screen
+                // AttendeeFlow and the client print page.
                 let personIdx = 0;
                 return meeting.attendees
                   .map((a) => {
                     const isSub = (a.kind ?? "person") === "subheading";
                     const name = htmlToPlain(a.name);
                     if (isSub) {
+                      // Reset the in-section counter so the next person
+                      // starts at 1.
+                      personIdx = 0;
                       // Brackets keep subheadings visually distinct in the
                       // monospace plain-text PDF cell where bold/colour
                       // can't carry. Adapter prefix is non-numeric so a