feat: social links with inline SVG icons from CMS

SocialRecord gains icon field (SVG markup string). InlineSvg component
parses SVG string via html-react-parser. Footer renders icon on mobile
(sm:hidden label), label on sm+ (hidden icon). Email field refactored
from string to SocialRecord relation.

src/shared/api/types.ts

@@ -141,6 +141,10 @@ export type SocialRecord = BaseRecord & {
    * Full URL for the social profile
    */
   url: string;
+  /**
+   * SVG markup string stored in PocketBase
+   */
+  icon: string;
 };
 
 /**
@@ -149,7 +153,7 @@ export type SocialRecord = BaseRecord & {
  */
 export type ContactsRecord = BaseRecord & {
   /**
-   * Primary contact email address
+   * Raw relation ID — use expand?.email for the resolved record
    */
   email: string;
   /**
@@ -157,9 +161,13 @@ export type ContactsRecord = BaseRecord & {
    */
   socials: string[];
   /**
-   * Expanded relation data, present when fetched with expand=socials
+   * Expanded relation data, present when fetched with expand=email,socials
    */
   expand?: {
+    /**
+     * Resolved email contact record
+     */
+    email?: SocialRecord;
     /**
      * Resolved social link records
      */