Fix "undefined" in PF2e stat block weaknesses/resistances

Some PF2e creatures (e.g. Giant Mining Bee) have qualitative
weaknesses without a numeric amount, causing "undefined" to
render in the stat block. Handle missing amounts gracefully.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/src/adapters/pf2e-bestiary-adapter.ts

@@ -40,8 +40,8 @@ interface RawDefenses {
 	};
 	hp?: { hp?: number }[];
 	immunities?: (string | { name: string })[];
-	resistances?: { amount: number; name: string; note?: string }[];
-	weaknesses?: { amount: number; name: string; note?: string }[];
+	resistances?: { amount?: number; name: string; note?: string }[];
+	weaknesses?: { amount?: number; name: string; note?: string }[];
 }
 
 interface RawAbility {
@@ -150,31 +150,35 @@ function formatImmunities(
 
 function formatResistances(
 	resistances:
-		| readonly { amount: number; name: string; note?: string }[]
+		| readonly { amount?: number; name: string; note?: string }[]
 		| undefined,
 ): string | undefined {
 	if (!resistances || resistances.length === 0) return undefined;
 	return resistances
-		.map((r) =>
-			r.note
-				? `${capitalize(r.name)} ${r.amount} (${r.note})`
-				: `${capitalize(r.name)} ${r.amount}`,
-		)
+		.map((r) => {
+			const base =
+				r.amount == null
+					? capitalize(r.name)
+					: `${capitalize(r.name)} ${r.amount}`;
+			return r.note ? `${base} (${r.note})` : base;
+		})
 		.join(", ");
 }
 
 function formatWeaknesses(
 	weaknesses:
-		| readonly { amount: number; name: string; note?: string }[]
+		| readonly { amount?: number; name: string; note?: string }[]
 		| undefined,
 ): string | undefined {
 	if (!weaknesses || weaknesses.length === 0) return undefined;
 	return weaknesses
-		.map((w) =>
-			w.note
-				? `${capitalize(w.name)} ${w.amount} (${w.note})`
-				: `${capitalize(w.name)} ${w.amount}`,
-		)
+		.map((w) => {
+			const base =
+				w.amount == null
+					? capitalize(w.name)
+					: `${capitalize(w.name)} ${w.amount}`;
+			return w.note ? `${base} (${w.note})` : base;
+		})
 		.join(", ");
 }