feat(albyhub): vendor v1.24.0 LND-only, no-frontend build

Replace the nixpkgs albyhub overrideAttrs patch-chain with a fully
vendored package at packages/albyhub for v1.24.0.

- modules/core/sovran-hub.nix: bump fallback version 1.8.0 -> 1.24.0
- modules/nwc-wallets.nix: build via pkgs.callPackage ../packages/albyhub
- packages/albyhub:
  - drop 0002-isolated-invoice-app-id.patch (fixed upstream)
  - add 0004-lnd-only.patch: strip LDK/Bark/Cashu/CLN/Phoenix backends
    from service/start.go, leaving only the LND case
  - add 0005-no-frontend.patch: remove //go:embed dist and the
    frontend handler registration
  - add default.nix: buildGoModule for v1.24.0 with no nodejs/yarn/
    bark-ffi-go/ldk-node deps (only stdenv.cc.cc), subPackages cmd/http

Keeps 0001-private-route-hints and 0003-loopback-bind-host. Does not
touch flake.nix, VERSION, or CHANGELOG.

packages/albyhub/default.nix

@@ -0,0 +1,55 @@
+{ lib
+, buildGoModule
+, fetchFromGitHub
+, stdenv
+}:
+
+buildGoModule (finalAttrs: {
+  pname = "albyhub";
+  version = "1.24.0";
+
+  src = fetchFromGitHub {
+    owner = "getAlby";
+    repo = "hub";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-IC3rl/9aJ88GgvGfhcJb1/pQb3xIkhYih1hLPJ8itP8=";
+  };
+
+  vendorHash = "sha256-A4OsntoJUDkvWJxnZFFxw5AjUPmwRl764nQ5FEA2yeo=";
+
+  patches = [
+    ./0001-private-route-hints.patch
+    ./0003-loopback-bind-host.patch
+    ./0004-lnd-only.patch
+    ./0005-no-frontend.patch
+  ];
+
+  # LND-only, no-frontend build: the only native dependency needed for
+  # cgo (sqlite3) is the C/C++ runtime from stdenv.cc.cc. No nodejs/yarn
+  # (no frontend), no bark-ffi-go or ldk-node (removed backends).
+  buildInputs = [
+    (lib.getLib stdenv.cc.cc)
+  ];
+
+  subPackages = [
+    "cmd/http"
+  ];
+
+  ldflags = [
+    "-X github.com/getAlby/hub/version.Tag=v${finalAttrs.version}"
+    "-s"
+    "-w"
+  ];
+
+  postInstall = ''
+    mv $out/bin/http $out/bin/albyhub
+  '';
+
+  meta = {
+    description = "Control lightning wallets over nostr";
+    homepage = "https://github.com/getAlBy/hub";
+    license = lib.licenses.asl20;
+    platforms = lib.platforms.linux;
+    mainProgram = "albyhub";
+  };
+})