feat: add rCal to app grid and standardize ecosystem footer

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

index.html

@@ -559,6 +559,18 @@
 				<div class="app-desc">Drop in a document, get a print-ready pocket book. 4 formats, Typst typesetting, instant PDF generation.</div>
 				<span class="app-tag">publishing</span>
 			</a>
+
+			<a href="https://rcal.online" class="app-card">
+				<div class="app-header">
+					<span class="app-emoji">📅</span>
+					<div>
+						<div class="app-name">rCal</div>
+						<div class="app-domain">rcal.online</div>
+					</div>
+				</div>
+				<div class="app-desc">Spatiotemporal group calendar. Ten zoom levels from moments to eras, map view, lunar phases, and r-tool integration.</div>
+				<span class="app-tag">calendar</span>
+			</a>
 		</div>
 	</div>
 
@@ -951,12 +963,26 @@
 	</div>
 
 	<footer>
+		<div style="display:flex;flex-wrap:wrap;justify-content:center;gap:6px 16px;margin-bottom:12px;">
+			<span style="font-weight:500;color:#64748b;">r* Ecosystem</span>
+			<a href="https://rspace.online">rSpace</a>
+			<a href="https://rmaps.online">rMaps</a>
+			<a href="https://rnotes.online">rNotes</a>
+			<a href="https://rvote.online">rVote</a>
+			<a href="https://rfunds.online">rFunds</a>
+			<a href="https://rtrips.online">rTrips</a>
+			<a href="https://rcart.online">rCart</a>
+			<a href="https://rwallet.online">rWallet</a>
+			<a href="https://rfiles.online">rFiles</a>
+			<a href="https://rtube.online">rTube</a>
+			<a href="https://rcal.online">rCal</a>
+			<a href="https://rnetwork.online">rNetwork</a>
+			<a href="https://rinbox.online">rInbox</a>
+			<a href="https://rstack.online" style="color:#94a3b8;">rStack</a>
+			<a href="https://rauctions.online">rAuctions</a>
+			<a href="https://rpubs.online">rPubs</a>
+		</div>
 		<p>rStack &mdash; open source, self-hosted, community-owned</p>
-		<p style="margin-top: 0.5rem;">
-			<a href="https://rspace.online">rSpace</a> &middot;
-			<a href="https://encryptid.jeffemmett.com">EncryptID</a> &middot;
-			<a href="https://github.com/jeffemmett">GitHub</a>
-		</p>
 	</footer>
 
 </body>