Start move to unify ID generation

config/config.go

@@ -103,8 +103,10 @@ type ConfigMail struct {
 }
 
 type ConfigSelf struct {
+	// The display name of the server actor
 	ServerActorDisplayName string `toml:"server_actor_display_name"`
-	ServerDisplayName      string `toml:"server_display_name"`
+	// The name of the server provided via nodeinfo
+	ServerDisplayName string `toml:"server_display_name"`
 }
 
 // Contains experimental features that could be good to have
@@ -120,11 +122,20 @@ type ConfigExperimental struct {
 	// implementations
 	// Both are created and stored for each local user. If this flag is enabled,
 	// Linstrom shares the ED25519 key on request, otherwise the RSA key
+	// Changing this setting after connections to other servers have been made might cause
+	// invalid signature problems where the remote server will use the old key instead
+	// of the new one. This is not really viable to fix within Linstrom
 	UseEd25519Keys bool `toml:"use_ed25519_keys"`
 	// Require authorized fetch signing for requests to the server actor too
 	// The implementation itself is stable, but might cause issues during initial connect
 	// if the other server also requires authorized fetch for the server actor
+	// Changing this setting is not expected to cause permanent problems
 	AuthFetchForServerActor bool `toml:"auth_fetch_for_server_actor"`
+	// Use cuid2 for generation of new IDs that are expected to be used via Activitypub
+	// They are shorter than the main method used (uuid v4) but should still provide enough
+	// uniqueness such that collisions are not to be expected.
+	// Changing this option will only affect new ID generations, not update existing ones
+	UseCuid2Ids bool `toml:"use_cuid2_ids"`
 }
 
 type Config struct {