feat: add 'anthropic/claude-haiku-4.5' to prompt caching models

Author: hannesrudolph

packages/types/src/providers/openrouter.ts

@@ -40,6 +40,7 @@ export const OPEN_ROUTER_PROMPT_CACHING_MODELS = new Set([
 	"anthropic/claude-sonnet-4.5",
 	"anthropic/claude-opus-4",
 	"anthropic/claude-opus-4.1",
+	"anthropic/claude-haiku-4.5",
 	"google/gemini-2.5-flash-preview",
 	"google/gemini-2.5-flash-preview:thinking",
 	"google/gemini-2.5-flash-preview-05-20",