Remove legacy party configuration

internal/config/party_resolution.go

@@ -28,18 +28,17 @@ func resolvePartyInput(input ResolvedInputFile) (ResolvedParty, error) {
 	if err != nil {
 		return ResolvedParty{}, fmt.Errorf("read party input %q: %w", path, err)
 	}
-	document, err := ParseParty(raw)
+	party, err := ParseParty(raw)
 	if err != nil {
 		return ResolvedParty{}, fmt.Errorf("parse party input %q: %w", path, err)
 	}
 	return ResolvedParty{
-		Mode: PartyModeCanonical,
 		Source: PartySource{
 			Path:       path,
 			ConfigPath: configPath,
 			Source:     input.Source,
 		},
-		Canonical: document.Canonical,
+		Canonical: party,
 	}, nil
 }
 
@@ -64,26 +63,3 @@ func resolveCampaignParty(campaignPath string, campaign *CampaignConfig) (Resolv
 	}
 	return resolvePartyInput(input)
 }
-
-func validateCanonicalPartySelection(campaign *CampaignConfig, session *SessionConfig) error {
-	if campaign == nil {
-		return fmt.Errorf("campaign config is required")
-	}
-	if strings.TrimSpace(campaign.Inputs.PlayersFile) != "" {
-		return fmt.Errorf("campaign.inputs.players_file is not allowed with a canonical party")
-	}
-	if session == nil {
-		return nil
-	}
-	if strings.TrimSpace(session.Inputs.PlayersFile) != "" {
-		return fmt.Errorf("session.inputs.players_file is not allowed with a canonical party")
-	}
-	if strings.TrimSpace(session.Inputs.PartyFile) != "" {
-		return fmt.Errorf("session.inputs.party_file cannot override a canonical campaign party")
-	}
-	return nil
-}
-
-func virtualPlayersInput() ResolvedInputFile {
-	return ResolvedInputFile{Source: "derived_from_party"}
-}