Add PF2e attack effects, ability frequency, and perception details

Show inline on-hit effects on attack lines (e.g., "plus Grab"), frequency
limits on abilities (e.g., "(1/day)"), and perception details text alongside
senses. Strip redundant frequency lines from Foundry descriptions.

Also add resilient PF2e source fetching: batched requests with retry,
graceful handling of ad-blocker-blocked creature files (partial success
with toast warning and re-fetch prompt for missing creatures).

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

packages/domain/src/creature-types.ts

@@ -23,6 +23,7 @@ export interface TraitBlock {
 	readonly name: string;
 	readonly activity?: ActivityCost;
 	readonly trigger?: string;
+	readonly frequency?: string;
 	readonly segments: readonly TraitSegment[];
 }
 
@@ -185,6 +186,7 @@ export interface Pf2eCreature {
 	readonly level: number;
 	readonly traits: readonly string[];
 	readonly perception: number;
+	readonly perceptionDetails?: string;
 	readonly senses?: string;
 	readonly languages?: string;
 	readonly skills?: string;