fix: use fetchFromGitHub instead of fetchPypi for applemusic-mcp

fetchPypi with pyproject format was causing "Unsupported format pyproject"
error. Switched to fetchFromGitHub to match the pattern used by other
packages in this repo (e.g. zotero-mcp).

Note: the SRI hash is a placeholder — run `nix build .#applemusic-mcp`
and replace with the correct hash from the error output on first build.

packages/applemusic-mcp/package.nix

@@ -1,7 +1,7 @@
 {
   lib,
   python3Packages,
-  fetchPypi,
+  fetchFromGitHub,
 }:
 
 python3Packages.buildPythonApplication rec {
@@ -9,12 +9,11 @@ python3Packages.buildPythonApplication rec {
   version = "0.15.1";
   pyproject = true;
 
-  src = fetchPypi {
-    inherit pname version;
-    format = "pyproject";
-    dist = "py3";
-    python = "py3";
-    hash = "sha256-qV24IbMAuxMd9uGi7phXl9IvWfbqVU2QO/F1LJ1WJWM=";
+  src = fetchFromGitHub {
+    owner = "epheterson";
+    repo = "applemusic-mcp";
+    rev = "v${version}";
+    hash = "sha256-LD3/yKjhKl8oqCL3bmZ+3yv2fDbMZRA0dMbPWHlnzj4=";
   };
 
   build-system = with python3Packages; [
@@ -23,17 +22,16 @@ python3Packages.buildPythonApplication rec {
 
   dependencies = with python3Packages; [
     mcp
+    pyjwt
     requests
-    python-dotenv
-    pydantic
+    cryptography
     playwright
-    rich
   ];
 
   pythonImportsCheck = [ "applemusic_mcp" ];
 
   meta = with lib; {
-    description = "MCP server for Apple Music — manage playlists, add music, browse your library";
+    description = "MCP server for Apple Music — manage playlists, search catalog, browse library";
     homepage = "https://github.com/epheterson/applemusic-mcp";
     license = licenses.mit;
     mainProgram = "applemusic-mcp";