Migrate remaining configuration documents to ConfigKit

internal/config/party_resolution.go

@@ -8,8 +8,6 @@ import (
 	"gitea.maximumdirect.net/eric/narratio/internal/fileops"
 )
 
-const maxPartyDocumentBytes = 8 << 20
-
 func resolvePartyInput(input ResolvedInputFile) (ResolvedParty, error) {
 	configuredPath := strings.TrimSpace(input.Path)
 	if configuredPath == "" {
@@ -24,7 +22,7 @@ func resolvePartyInput(input ResolvedInputFile) (ResolvedParty, error) {
 		path = filepath.Join(filepath.Dir(configPath), path)
 	}
 	path = filepath.Clean(path)
-	raw, err := fileops.ReadFileBounded(path, maxPartyDocumentBytes)
+	raw, err := fileops.ReadFileBounded(path, maxConfigDocumentBytes)
 	if err != nil {
 		return ResolvedParty{}, fmt.Errorf("read party input %q: %w", path, err)
 	}