chore(marmel): bump to 1.0.0

Pin upstream release commit d6627d7c ("1.0.0 (#6)"), update src hash.
Cargo.lock is byte-identical to the previous pin, so cargoHash is unchanged.

packages/marmel/package.nix

@@ -7,16 +7,15 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "marmel";
-  # Upstream publishes no git tags or releases, so this is pinned to a commit.
-  # The version shape matches what `nix-update --version=branch=main` generates
-  # for a tagless repository.
-  version = "0-unstable-2026-10-05";
+  # Upstream publishes no git tags, so this is pinned to the 1.0.0 release
+  # commit ("1.0.0 (#6)").
+  version = "1.0.0";
 
   src = fetchFromGitHub {
     owner = "Na1w";
     repo = "marmel";
-    rev = "31f4e90553655b664c4bdb6839ddb92c21b144cf";
-    hash = "sha256-D8/bRBp+Wq5RTsGxMeIgl0pORmU4Ev5D5X9BnHIB1Rs=";
+    rev = "d6627d7cf3bf509d1e6db0d9d78736116e92e82a";
+    hash = "sha256-UlrSp/n3og0GAQXzISsB24OfK3qOUPE7jYOkEbZ2neI=";
   };
 
   cargoHash = "sha256-etqW3xcxkiNfkiPxl/Emt5pQCkNnoIhHFkX0Zqfs4rc=";