feat(standings): support legacy rXbgN definite status in swiss adaptor

Maps the legacy `r<round>bg<team>` input to `r<round>bg` on the opponent.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: Rathoz

lua/spec/standings_legacy_swiss_spec.lua

@@ -0,0 +1,32 @@
+--- Triple Comment to Enable our LLS Plugin
+describe('Standings Legacy Swiss', function()
+	local StandingTableLegacySwiss = require('Module:Standings/Table/Legacy/Swiss')
+
+	describe('team input', function()
+		it('maps r<round>bg<team> to r<round>bg on the opponent', function()
+			local args = {
+				rounds = '5',
+				team1 = 'alpha',
+				team2 = 'bravo',
+				r3bg1 = 'up',
+				r5bg1 = 'stayup',
+				r4bg2 = 'down',
+			}
+
+			local alpha = StandingTableLegacySwiss.parseTeamInput(args, 1)
+			assert.are_equal('alpha', alpha[1])
+			assert.are_equal('up', alpha.r3bg)
+			assert.are_equal('stayup', alpha.r5bg)
+			assert.is_nil(alpha.r4bg)
+
+			local bravo = StandingTableLegacySwiss.parseTeamInput(args, 2)
+			assert.are_equal('down', bravo.r4bg)
+			assert.is_nil(bravo.r3bg)
+		end)
+
+		it('ignores rounds beyond the number of rounds', function()
+			local opponent = StandingTableLegacySwiss.parseTeamInput({rounds = '3', team1 = 'alpha', r4bg1 = 'up'}, 1)
+			assert.is_nil(opponent.r4bg)
+		end)
+	end)
+end)

lua/wikis/commons/Standings/Table/Legacy/Swiss.lua

@@ -90,7 +90,7 @@ end
 
 ---@param args table
 ---@param teamIndex integer
----@return {type: OpponentType, [1]: string, tiebreaker: string?, startingpoints: string?, r1: string?}?
+---@return {type: OpponentType, [1]: string, tiebreaker: string?, startingpoints: string?, r1bg: string?}?
 function StandingTableLegacySwiss.parseTeamInput(args, teamIndex)
 	local team = args['team' .. teamIndex]
 	if not team then
@@ -100,7 +100,15 @@ function StandingTableLegacySwiss.parseTeamInput(args, teamIndex)
 	local tiebreaker = args['temp_tie' .. teamIndex]
 	local startingPoints = args['temp_p' .. teamIndex]
 
-	return {type = Opponent.team, team, tiebreaker = tiebreaker, startingpoints = startingPoints}
+	-- Legacy `r<round>bg<team>` maps to `r<round>bg` on the opponent
+	local definiteStatuses = Table.map(Array.range(1, tonumber(args.rounds) or 1), function(roundIndex)
+		return 'r' .. roundIndex .. 'bg', args['r' .. roundIndex .. 'bg' .. teamIndex]
+	end)
+
+	return Table.merge(
+		{type = Opponent.team, team, tiebreaker = tiebreaker, startingpoints = startingPoints},
+		definiteStatuses
+	)
 end
 
 ---@param args table