showRulePopup function

function showRulePopup(anchor: HTMLElement, onDismiss: () => void): void {
  currentOnDismiss = onDismiss;

  if (!rulePopupElement) {
    rulePopupElement = document.createElement("div");
    rulePopupElement.id = RULE_POPUP_ID;
    rulePopupElement.innerHTML = getRulePopupHTML();
    document.body.appendChild(rulePopupElement);
    setupPopupListeners();
  }

  if (!genSearchableSelect) {
    const wrap = rulePopupElement.querySelector<HTMLElement>(
      "#fa-rp-generator-wrap",
    );
    if (wrap) {
      genSearchableSelect = new SearchableSelect({
        entries: buildGeneratorSelectEntries(),
        value: "auto",
        placeholder: "Pesquisar tipo…",
      });
      genSearchableSelect.mount(wrap);
      genSearchableSelect.on("change", () => {
        updateParamsSection();
        updatePreview();
      });
    }
  }

  const nameEl =
    rulePopupElement.querySelector<HTMLElement>("#fa-rp-field-name");
  if (nameEl) nameEl.textContent = currentRuleField?.label || "";

  const fixedInput =
    rulePopupElement.querySelector<HTMLInputElement>("#fa-rp-fixed");
  if (fixedInput) fixedInput.value = "";

  const suggestionEl =
    rulePopupElement.querySelector<HTMLElement>("#fa-rp-suggestion");
  const suggestionTypeEl = rulePopupElement.querySelector<HTMLElement>(
    "#fa-rp-suggestion-type",
  );
  const saveBtn =
    rulePopupElement.querySelector<HTMLButtonElement>("#fa-rp-save");

  if (saveBtn) {
    saveBtn.textContent = "💾 Salvar";
    saveBtn.disabled = false;
  }

  genSearchableSelect?.setValue(currentSuggestedType ?? "auto");

  if (suggestionEl && suggestionTypeEl) {
    if (currentSuggestedType) {
      const label =
        getFieldTypeOptions().find((o) => o.value === currentSuggestedType)
          ?.label ?? currentSuggestedType;
      suggestionTypeEl.textContent = label;
      suggestionEl.style.display = "flex";
    } else {
      suggestionEl.style.display = "none";
    }
  }

  updateParamsSection();
  updatePreview();
  positionRulePopup(anchor);
  rulePopupElement.style.display = "block";
  fixedInput?.focus();
}