Implement Retire HoF (Gauntlet) rule enforcement for genlockes

When retireHoF is enabled, surviving HoF Pokemon and their evolutionary
families are retired at leg advancement and treated as duplicates in all
subsequent legs — both in the encounter modal and bulk randomize.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/components/EncounterModal.tsx

@@ -17,6 +17,7 @@ interface EncounterModalProps {
   gameId: number
   existing?: EncounterDetail
   dupedPokemonIds?: Set<number>
+  retiredPokemonIds?: Set<number>
   onSubmit: (data: {
     routeId: number
     pokemonId: number
@@ -93,6 +94,7 @@ export function EncounterModal({
   gameId,
   existing,
   dupedPokemonIds,
+  retiredPokemonIds,
   onSubmit,
   onUpdate,
   onClose,
@@ -285,7 +287,7 @@ export function EncounterModal({
                                 </span>
                                 {isDuped && (
                                   <span className="text-[10px] text-gray-400 italic">
-                                    already caught
+                                    {retiredPokemonIds?.has(rp.pokemonId) ? 'retired (HoF)' : 'already caught'}
                                   </span>
                                 )}
                                 {!isDuped && SPECIAL_METHODS.includes(rp.encounterMethod) && (

frontend/src/pages/RunEncounters.tsx

@@ -469,6 +469,13 @@ export function RunEncounters() {
     return map
   }, [normalEncounters])
 
+  // Build set of retired Pokemon IDs from genlocke context
+  const retiredPokemonIds = useMemo(() => {
+    const ids = run?.genlocke?.retiredPokemonIds
+    if (!ids || ids.length === 0) return undefined
+    return new Set(ids)
+  }, [run])
+
   // Build set of duped Pokemon IDs (for duplicates clause)
   const dupedPokemonIds = useMemo(() => {
     const dupesClauseOn = run?.rules?.duplicatesClause ?? true
@@ -483,6 +490,14 @@ export function RunEncounters() {
     }
 
     const duped = new Set<number>()
+
+    // Seed with retired Pokemon IDs from prior genlocke legs
+    if (retiredPokemonIds) {
+      for (const id of retiredPokemonIds) {
+        duped.add(id)
+      }
+    }
+
     for (const enc of normalEncounters) {
       if (enc.status !== 'caught') continue
       const pokemonId = enc.currentPokemonId ?? enc.pokemonId
@@ -504,7 +519,7 @@ export function RunEncounters() {
       }
     }
     return duped.size > 0 ? duped : undefined
-  }, [run, normalEncounters, familiesData])
+  }, [run, normalEncounters, familiesData, retiredPokemonIds])
 
   // Find starter Pokemon name for auto-matching variant boss teams
   // Note: enc.route from the run detail doesn't include encounterMethods
@@ -1286,6 +1301,7 @@ export function RunEncounters() {
           gameId={run!.gameId}
           existing={editingEncounter ?? undefined}
           dupedPokemonIds={dupedPokemonIds}
+          retiredPokemonIds={retiredPokemonIds}
           onSubmit={handleCreate}
           onUpdate={handleUpdate}
           onClose={() => {

frontend/src/types/game.ts

@@ -99,6 +99,7 @@ export interface RunGenlockeContext {
   legOrder: number
   totalLegs: number
   isFinalLeg: boolean
+  retiredPokemonIds: number[]
 }
 
 export interface RunDetail extends NuzlockeRun {