fe-map: note under the score when flight times are off; contribute links on the three sites

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

femap/site/index.html

@@ -197,6 +197,7 @@ footer{padding-block:18px 30px;color:var(--faint);font-size:13px}
     </table>
     <div class="hist"><span>Map distance ÷ timed length, every flight</span><canvas id="hist" aria-label="Histogram of map distance divided by timed length"></canvas></div>
     <div><h2 style="margin-bottom:6px">Farthest out</h2><ul class="worst" id="worst"></ul></div>
+    <p class="note" id="flnote" hidden>Flight times are off, so every remaining measurement is a maximum distance. Any flat map drawn small enough meets them all, so a score of 0 here says nothing about the shape. The triangles do not depend on the layout.</p>
     <p class="note" id="globenote">Globe: the same rules applied to great-circle distances on a sphere of radius 6,371 km.</p>
   </aside>
 </section>
@@ -488,6 +489,7 @@ function globeScore() {
 let SC = null, GS = null;
 function update(full) {
   SC = score(sv.X, 2); if (full) GS = globeScore();
+  $("#flnote").hidden = S.fl;
   const nAct = { rt: act.l.filter(l => l.kind === "rt").length, rr: act.l.filter(l => l.kind === "rail" || l.kind === "road").length, sat: act.l.filter(l => l.kind === "sat").length };
   const row = (label, a, b, n, cls) => `<tr><th scope="row">${label}</th><td class="${a ? cls : "ok"}">${fmt(a)}<span class="of"> / ${fmt(n)}</span></td><td class="${b ? cls : "ok"}">${fmt(b)}</td></tr>`;
   const nf = S.fl ? FL.length : 0;