buildPrompt method presentation ✓ 100.0%

  buildPrompt(input: FormContextInput, userContext?: string): string {
    const fieldLines = input
      .slice(0, FORM_CONTEXT_MAX_FIELDS)
      .map((f) => {
        const label = f.label?.trim()
          ? f.label.trim()
          : (f.inputType ?? "field");
        let line = `[${f.index}] ${label} (${f.fieldType})`;

        if (f.options && f.options.length > 0) {
          const opts = f.options
            .filter((o) => o.trim().length > 0)
            .slice(0, MAX_OPTIONS_PER_FIELD)
            .join("|");
          if (opts) line += `: ${opts}`;
        }

        return line;
      })
      .join("\n");

    const contextBlock = buildUserContextBlock(userContext);

    return (
      `You are a cohesive test-data generator for Brazilian web forms.\n` +
      `Generate realistic values for ALL fields below.\n` +
      `RULES:\n` +
      `- All values must belong to the SAME fictional person/company.\n` +
      `- Use Brazilian Portuguese for names, addresses, and locale-specific data.\n` +
      `- Valid CPF format: nnn.nnn.nnn-nn (with real check digits).\n` +
      `- Valid CNPJ format: nn.nnn.nnn/nnnn-nn (with real check digits).\n` +
      `- Use DD/MM/YYYY for dates unless the label says otherwise.\n` +
      `- For SELECT fields, pick exactly one value from the provided options.\n` +
      `- Respond ONLY with minified JSON: {"0":"value","1":"value",...}\n` +
      `- Include ALL field indices listed below.\n` +
      contextBlock +
      `\nFields:\n${fieldLines}\n\n` +
      `JSON:`
    );
  },