feat: Refactor service management scripts to use a unified dev script

- Added package.json to manage development scripts.
- Updated restart-services.ps1 to call the new dev script for starting services.
- Refactored start-admin.ps1, start-backend.ps1, start-frontend.ps1, and start-mcp.ps1 to utilize the dev script for starting respective services.
- Enhanced stop-services.ps1 to improve process termination logic by matching command patterns.

frontend/src/components/TechStackList.astro

@@ -1,6 +1,5 @@
 ---
 import type { TechStackItem } from '../lib/types';
-import InfoTile from './ui/InfoTile.astro';
 
 interface Props {
   items: TechStackItem[];
@@ -9,20 +8,23 @@ interface Props {
 const { items } = Astro.props;
 ---
 
-<ul class="grid grid-cols-1 sm:grid-cols-2 gap-3">
-  {items.map(item => (
-    <li>
-      <InfoTile layout="grid" tone="blue">
-        <span class="flex h-8 w-8 items-center justify-center rounded-xl bg-[var(--primary)]/10 text-[var(--primary)]">
+<ul class="grid grid-cols-1 gap-3 sm:grid-cols-2">
+  {items.map((item) => (
+    <li class="group overflow-hidden rounded-2xl border border-[var(--border-color)] bg-[linear-gradient(180deg,rgba(255,255,255,0.88),rgba(var(--primary-rgb),0.08))] shadow-[0_12px_30px_rgba(37,99,235,0.08)] transition-transform duration-200 hover:-translate-y-0.5">
+      <div class="flex items-start gap-3 px-4 py-4">
+        <span class="mt-0.5 flex h-10 w-10 shrink-0 items-center justify-center rounded-xl bg-[var(--primary)] text-white shadow-[0_10px_24px_rgba(37,99,235,0.24)]">
           <i class="fas fa-code text-xs"></i>
         </span>
         <span class="min-w-0 flex-1">
-          <span class="block text-[var(--text)] text-sm font-medium">{item.name}</span>
-          {item.level && (
-            <span class="block text-xs text-[var(--text-tertiary)] mt-0.5">{item.level}</span>
-          )}
+          <span class="block text-[11px] uppercase tracking-[0.2em] text-[var(--text-tertiary)]">
+            stack://module
+          </span>
+          <span class="mt-1 block text-base font-semibold text-[var(--title-color)]">{item.name}</span>
+          <span class="mt-2 block font-mono text-xs text-[var(--primary)]">
+            {item.level || 'active'}
+          </span>
         </span>
-      </InfoTile>
+      </div>
     </li>
   ))}
 </ul>