Update DMR link, add board members to about page

- Rename "DMR Editor" to "DMR İndir" across nav and about page
- Add target="_blank" support to Header component
- Add all 5 board members with QRZ.com links to hakkimizda page
- Update DMR blog post with channel list section
- Remove "Liderlik" tagline from board section

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/widgets/Header.astro

@@ -14,6 +14,7 @@ interface Link {
   href?: string;
   ariaLabel?: string;
   icon?: string;
+  target?: string;
 }
 
 interface MenuLink extends Link {
@@ -86,7 +87,7 @@ const currentPath = `/${trimSlash(new URL(Astro.url).pathname)}`;
         class="flex flex-col md:flex-row md:self-center w-full md:w-auto text-xl md:text-[0.9375rem] tracking-[0.01rem] font-medium md:justify-center"
       >
         {
-          links.map(({ text, href, links }) => (
+          links.map(({ text, href, links, target }) => (
             <li class={links?.length ? 'dropdown' : ''}>
               {links?.length ? (
                 <>
@@ -98,7 +99,7 @@ const currentPath = `/${trimSlash(new URL(Astro.url).pathname)}`;
                     <Icon name="tabler:chevron-down" class="w-3.5 h-3.5 ml-0.5 rtl:ml-0 rtl:mr-0.5 hidden md:inline" />
                   </button>
                   <ul class="dropdown-menu md:backdrop-blur-md dark:md:bg-dark rounded md:absolute pl-4 md:pl-0 md:hidden font-medium md:bg-white/90 md:min-w-[200px] drop-shadow-xl">
-                    {links.map(({ text: text2, href: href2 }) => (
+                    {links.map(({ text: text2, href: href2, target: target2 }) => (
                       <li>
                         <a
                           class:list={[
@@ -106,6 +107,7 @@ const currentPath = `/${trimSlash(new URL(Astro.url).pathname)}`;
                             { 'aw-link-active': href2 === currentPath },
                           ]}
                           href={href2}
+                          {...(target2 ? { target: target2, rel: 'noopener noreferrer' } : {})}
                         >
                           {text2}
                         </a>
@@ -120,6 +122,7 @@ const currentPath = `/${trimSlash(new URL(Astro.url).pathname)}`;
                     { 'aw-link-active': href === currentPath },
                   ]}
                   href={href}
+                  {...(target ? { target, rel: 'noopener noreferrer' } : {})}
                 >
                   {text}
                 </a>