Remove legacy party configuration

internal/config/config.go

@@ -64,7 +64,6 @@ type CampaignInputsConfig struct {
 	SpeakersFile     string `yaml:"speakers_file"`
 	AutocorrectFile  string `yaml:"autocorrect_file"`
 	GlossaryFile     string `yaml:"glossary_file"`
-	PlayersFile      string `yaml:"players_file"`
 	PartyFile        string `yaml:"party_file"`
 	SpellCatalogFile string `yaml:"spell_catalog_file"`
 }
@@ -357,8 +356,6 @@ type SessionInputsConfig struct {
 	SpeakersFile     string               `yaml:"speakers_file"`
 	AutocorrectFile  string               `yaml:"autocorrect_file"`
 	GlossaryFile     string               `yaml:"glossary_file"`
-	PlayersFile      string               `yaml:"players_file"`
-	PartyFile        string               `yaml:"party_file"`
 	SpellCatalogFile string               `yaml:"spell_catalog_file"`
 }
 
@@ -373,7 +370,6 @@ type ResolvedStableInputs struct {
 	SpeakersFile     ResolvedInputFile
 	AutocorrectFile  ResolvedInputFile
 	GlossaryFile     ResolvedInputFile
-	PlayersFile      ResolvedInputFile
 	PartyFile        ResolvedInputFile
 	SpellCatalogFile ResolvedInputFile
 }
@@ -385,11 +381,10 @@ type ResolvedInputFile struct {
 	Source     string
 }
 
-// ResolvedParty records the selected party mode, its non-secret source
-// provenance, and canonical domain data when available. It is runtime-only and
-// must never be copied into manifests as raw party content.
+// ResolvedParty records the campaign-owned canonical party and its non-secret
+// source provenance. It is runtime-only and must never be copied into manifests
+// as raw party content.
 type ResolvedParty struct {
-	Mode      PartyMode
 	Source    PartySource
 	Canonical *CanonicalParty
 }