Method processResponse

web/src/lib/services/ChatService.ts:117–143

(response: StreamResponse)

		const validator = new LanguageValidator(language);

		const processResponse = (response: StreamResponse) => {
			const pattern = get(selectedPatternName);

			if (pattern) {
				// Do NOT call cleanPatternOutput here - it runs on each streaming token
				// and .trim() strips leading spaces that serve as word separators.
				// Cleaning should be done on the final accumulated content at display time.

				// Simplified format determination - always markdown unless mermaid
				const isMermaid = [
					"graph TD",
					"gantt",
					"flowchart",
					"sequenceDiagram",
					"classDiagram",
					"stateDiagram",
				].some((starter) => response.content.trim().startsWith(starter));

				response.format = isMermaid ? "mermaid" : "markdown";
			}

			if (response.type === "content") {
				response.content = validator.enforceLanguage(response.content);
			}

			return response;
		};
		return new ReadableStream({
			async start(controller) {
				try {