fix: unify dialog layout and fix content padding issues

- Fix negative margin overflow in all dialog content areas
- Standardize dialog structure with flex-col layout
- Add consistent py-4 spacing to all content areas
- Ensure proper spacing between header, content, and footer

Affected components:
- AddProviderDialog, EditProviderDialog
- McpFormModal, McpPanel
- UsageScriptModal
- SettingsDialog

All dialogs now follow unified layout pattern:
- DialogContent: flex flex-col max-h-[90vh]
- Content area: flex-1 overflow-y-auto px-6 py-4
- No negative margins that cause content overflow

src/components/providers/forms/hooks/useBaseUrlState.ts

@@ -1,5 +1,8 @@
 import { useState, useCallback, useRef, useEffect } from "react";
-import { extractCodexBaseUrl, setCodexBaseUrl as setCodexBaseUrlInConfig } from "@/utils/providerConfigUtils";
+import {
+  extractCodexBaseUrl,
+  setCodexBaseUrl as setCodexBaseUrlInConfig,
+} from "@/utils/providerConfigUtils";
 import type { ProviderCategory } from "@/types";
 
 interface UseBaseUrlStateProps {
@@ -93,7 +96,10 @@ export function useBaseUrlState({
       }
 
       isUpdatingRef.current = true;
-      const updatedConfig = setCodexBaseUrlInConfig(codexConfig || "", sanitized);
+      const updatedConfig = setCodexBaseUrlInConfig(
+        codexConfig || "",
+        sanitized,
+      );
       onCodexConfigChange(updatedConfig);
 
       setTimeout(() => {