Add type restriction rule (monolocke)

Adds allowedTypes: string[] to NuzlockeRules. When set, the encounter
selector hides non-matching Pokemon and the routes endpoint filters out
routes with no matching encounters, so only eligible locations appear.

Type picker UI in RulesConfiguration; active restriction shown in
RuleBadges. Backend accepts allowed_types query param and joins through
RouteEncounter.pokemon to filter by type.

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

frontend/src/components/EncounterModal.tsx

@@ -43,6 +43,7 @@ interface EncounterModalProps {
   isPending: boolean
   useAllPokemon?: boolean | undefined
   staticClause?: boolean | undefined
+  allowedTypes?: string[] | undefined
 }
 
 const statusOptions: {
@@ -201,6 +202,7 @@ export function EncounterModal({
   isPending,
   useAllPokemon,
   staticClause = true,
+  allowedTypes,
 }: EncounterModalProps) {
   const { data: routePokemon, isLoading: loadingPokemon } = useRoutePokemon(
     useAllPokemon ? null : route.id,
@@ -267,8 +269,10 @@ export function EncounterModal({
     [routePokemon]
   )
 
-  const filteredPokemon = routePokemon?.filter((rp) =>
-    rp.pokemon.name.toLowerCase().includes(search.toLowerCase())
+  const filteredPokemon = routePokemon?.filter(
+    (rp) =>
+      rp.pokemon.name.toLowerCase().includes(search.toLowerCase()) &&
+      (!allowedTypes?.length || rp.pokemon.types.some((t) => allowedTypes.includes(t)))
   )
 
   const groupedPokemon = useMemo(
@@ -446,9 +450,13 @@ export function EncounterModal({
                     }
                     onClick={() => {
                       if (routePokemon) {
-                        const eligible = staticClause
-                          ? routePokemon
-                          : routePokemon.filter((rp) => rp.encounterMethod !== 'static')
+                        const eligible = routePokemon
+                          .filter((rp) => staticClause || rp.encounterMethod !== 'static')
+                          .filter(
+                            (rp) =>
+                              !allowedTypes?.length ||
+                              rp.pokemon.types.some((t) => allowedTypes.includes(t))
+                          )
                         setSelectedPokemon(pickRandomPokemon(eligible, dupedPokemonIds))
                       }
                     }}