Remove clanModules

- Removes clanModules in favor of the new clanServices
- Adds a warning and link to the migration guide

lib/modules/inventory/frontmatter/default.nix

@@ -66,7 +66,7 @@ let
       ];
     }).options;
 
-  migratedModules = [ "admin" ];
+  migratedModules = [ ];
 
   makeModuleNotFoundError =
     serviceName:
@@ -121,45 +121,7 @@ let
     );
 
   checkConstraints = args: (evalFrontmatter args).config.constraints.assertions;
-
-  getReadme =
-    modulepath: modulename:
-    let
-      readme = modulepath + "/README.md";
-      readmeContents =
-        if (builtins.pathExists readme) then
-          (builtins.readFile readme)
-        else
-          throw "No README.md found for module ${modulename} (expected at ${readme})";
-    in
-    readmeContents;
-
-  getFrontmatter =
-    modulepath: modulename:
-    let
-      content = getReadme modulepath modulename;
-      parts = lib.splitString "---" content;
-      # Partition the parts into the first part (the readme content) and the rest (the metadata)
-      parsed = builtins.partition ({ index, ... }: if index >= 2 then false else true) (
-        lib.filter ({ index, ... }: index != 0) (lib.imap0 (index: part: { inherit index part; }) parts)
-      );
-      meta = builtins.fromTOML (builtins.head parsed.right).part;
-    in
-    if (builtins.length parts >= 3) then
-      meta
-    else
-      throw ''
-        TOML Frontmatter not found in README.md for module ${modulename}
-
-        Please add the following to the top of your README.md:
-
-        ---
-        description = "Your description here"
-        categories = [ "Your categories here" ]
-        features = [ "inventory" ]
-        ---
-        ...rest of your README.md...
-      '';
+  getFrontmatter = _modulepath: _modulename: "clanModules are removed!";
 in
 {
   inherit