fix: add tests and fix typing for formatter trigger (#2768)

src/plugin-handlers/config-handler.ts

@@ -7,6 +7,7 @@ import { applyMcpConfig } from "./mcp-config-handler";
 import { applyProviderConfig } from "./provider-config-handler";
 import { loadPluginComponents } from "./plugin-components-loader";
 import { applyToolConfig } from "./tool-config-handler";
+import { clearFormatterCache } from "../tools/hashline-edit/formatter-trigger"
 
 export { resolveCategoryConfig } from "./category-config-resolver";
 
@@ -23,6 +24,7 @@ export function createConfigHandler(deps: ConfigHandlerDeps) {
     const formatterConfig = config.formatter;
 
     applyProviderConfig({ config, modelCacheState });
+    clearFormatterCache()
 
     const pluginComponents = await loadPluginComponents({ pluginConfig });