Stop redirecting the apex to the repo

The apex is getting its own content, so it cannot be spent forwarding to
/fdroid/repo/. The short, typeable way in is a separate name that
redirects here -- fdroid.randogoth.com, defined in bucur's
modules/services/fdroid.nix.

Until that content lands, / falls through to the existing 404, which is
deliberate. repo/index.html is unaffected and still the repo's landing
page at /fdroid/repo/, the address the signed index names and the one
clients subscribe to.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

module.nix

@@ -137,11 +137,15 @@ let
     		file_server
     	}
 
-    	# `fdroid update` writes repo/index.html: the repo's own landing
+    	# No redirect from /. The apex is being given its own content, so it
-    	# page, listing every app and carrying the QR code that adds the
+    	# cannot be spent forwarding to the repo; the short, typeable way in
-    	# repo to a phone. Better than anything hand-written here, and it
+    	# is a separate name that redirects here (fdroid.randogoth.com, in
-    	# can never fall out of step with the index.
+    	# bucur's modules/services/fdroid.nix). Until that content lands the
-    	redir / /fdroid/repo/ permanent
+    	# apex falls through to the 404 below, which is deliberate.
+    	#
+    	# repo/index.html, which `fdroid update` writes, is still the repo's
+    	# landing page and still reachable at /fdroid/repo/ -- the address the
+    	# signed index names and the one clients subscribe to.
 
     	# Caddy answers a request that matched no route with an empty 200, so
     	# without this every stray path — /config.yml included — looks like a