Move the scenario onto exp_roles and remove the legacy role system

Every call site of expcore.roles now uses exp_roles, and the legacy module,
its config, and the glue which refreshed guis on role events are deleted.
Where a file only renamed the require and the permission strings the change is
mechanical; the rest:

- Jail is now "give the Jail role" and unjail "take it away". The role has a
  higher priority than every other so holding it suppresses them, which is
  what stashing and restoring the roles was for.
- The command role authority derives exp_scenario.command.<name> from the
  command name, and the role parsers use player_outranks rather than comparing
  indexes with their own root check.
- The admin and spectator triggers, and the gui refresh on role changes, live
  in exp_scenario/control/roles.lua; the system commands trigger stays with
  the command authority.
- The player list warn button is keyed on create_warning, the permission
  the command behind it already required, and report on create_report. Both
  were keyed on names no role held, so only root ever saw them.
- The warps and tasks configs say exp_roles where they said expcore.roles.
- The role tables the readme and player list read are replaced by
  get_player_names and get_roles.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

exp_scenario/module/gui/player_list.lua

@@ -4,7 +4,7 @@ Adds a player list to show names and play time; also includes action buttons whi
 
 local ExpUtil = require("modules/exp_util")
 local Gui = require("modules/exp_gui")
-local Roles = require("modules/exp_legacy/expcore/roles")
+local Roles = require("modules/exp_roles")
 local config = require("modules/exp_legacy/config/gui/player_list_actions")
 
 --- @class ExpGui_PlayerList.elements
@@ -203,7 +203,8 @@ function Elements.player_table.calculate_row_data()
     -- Flatten the roles into a single ordered list
     local count = 0
     local row_data = {}
-    for _, role_name in pairs(Roles.config.order) do
+    for _, role in ipairs(Roles.get_roles()) do
+        local role_name = role.name
         if players[role_name] then
             for _, player in pairs(players[role_name]) do
                 count = count + 1
@@ -360,7 +361,7 @@ function Elements.action_bar.refresh(action_bar, player, selected_player)
         if buttons.auth and not buttons.auth(player, selected_player) then
             flow.visible = false
         else
-            flow.visible = Roles.player_allowed(player, action_name)
+            flow.visible = Roles.player_has_permission(player, action_name)
         end
     end
 end
@@ -492,7 +493,7 @@ Gui.toolbar.create_button{
     sprite = "entity/character",
     tooltip = { "exp-gui_player-list.main-tooltip" },
     visible = function(player, element)
-        return Roles.player_allowed(player, "gui/player-list")
+        return Roles.player_has_permission(player, "exp_scenario.gui.player_list")
     end
 }
 
@@ -534,8 +535,7 @@ return {
     events = {
         [e.on_player_joined_game] = redraw_player_list,
         [e.on_player_left_game] = on_player_left_game,
-        [Roles.events.on_role_assigned] = redraw_player_list,
-        [Roles.events.on_role_unassigned] = redraw_player_list,
+        [Roles.events.on_player_roles_changed] = redraw_player_list,
     },
     on_nth_tick = {
         [1800] = refresh_player_times,