refactor: update content and improve accessibility in various files

- Revised the description in index.html for clarity and focus on local-first system behavior.
- Changed 'HEALTH' to 'STABILITY' in dashboard_screen.dart for better terminology alignment.
- Enhanced the connection_banner.dart widget with Semantics for improved accessibility.
- Updated development_setup.md to include a reference to the documentation index for better context.

Author: AsieduDevelopmentHub

dashboard/lib/screens/dashboard_screen.dart

@@ -197,7 +197,7 @@ class _SentraNavRail extends StatelessWidget {
                   ),
                 ),
                 Text(
-                  'HEALTH',
+                  'STABILITY',
                   style: TextStyle(
                     color: stabilityColor.withValues(alpha: 0.7),
                     fontSize: 8,

dashboard/lib/widgets/connection_banner.dart

@@ -7,52 +7,61 @@ class ConnectionBanner extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Container(
-      width: double.infinity,
-      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
-      decoration: BoxDecoration(
-        color: AppTheme.warning.withValues(alpha: 0.1),
-        border: Border(
-          bottom: BorderSide(color: AppTheme.warning.withValues(alpha: 0.3)),
+    return Semantics(
+      container: true,
+      liveRegion: true,
+      label: 'Connecting to SentraCore engine',
+      child: Container(
+        width: double.infinity,
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
+        decoration: BoxDecoration(
+          color: AppTheme.warning.withValues(alpha: 0.1),
+          border: Border(
+            bottom: BorderSide(color: AppTheme.warning.withValues(alpha: 0.3)),
+          ),
         ),
-      ),
-      child: Column(
-        crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
-          Row(
-            children: [
-              SizedBox(
-                width: 14,
-                height: 14,
-                child: CircularProgressIndicator(
-                  strokeWidth: 2,
-                  valueColor: AlwaysStoppedAnimation<Color>(AppTheme.warning),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: [
+                SizedBox(
+                  width: 14,
+                  height: 14,
+                  child: Semantics(
+                    label: 'Connecting',
+                    child: CircularProgressIndicator(
+                      strokeWidth: 2,
+                      valueColor:
+                          AlwaysStoppedAnimation<Color>(AppTheme.warning),
+                    ),
+                  ),
                 ),
-              ),
-              const SizedBox(width: 10),
-              Expanded(
-                child: Text(
-                  'Connecting to SentraCore engine…',
-                  style: TextStyle(
-                    color: AppTheme.warning,
-                    fontSize: 12,
-                    fontWeight: FontWeight.w500,
+                const SizedBox(width: 10),
+                Expanded(
+                  child: Text(
+                    'Connecting to SentraCore engine…',
+                    style: TextStyle(
+                      color: AppTheme.warning,
+                      fontSize: 12,
+                      fontWeight: FontWeight.w500,
+                    ),
                   ),
                 ),
-              ),
-            ],
-          ),
-          Padding(
-            padding: const EdgeInsets.only(left: 24, top: 6),
-            child: Text(
-              'Waiting for the local engine. This may take a few seconds.',
-              style: TextStyle(
-                color: AppTheme.textMutedFor(context),
-                fontSize: 11,
+              ],
+            ),
+            Padding(
+              padding: const EdgeInsets.only(left: 24, top: 6),
+              child: Text(
+                'Waiting for the local engine. This may take a few seconds.',
+                style: TextStyle(
+                  color: AppTheme.textMutedFor(context),
+                  fontSize: 11,
+                ),
               ),
             ),
-          ),
-        ],
+          ],
+        ),
       ),
     );
   }

docs/setup/development_setup.md

@@ -1,6 +1,6 @@
 # Development Setup
 
-This guide explains how to configure a local SentraCore development environment across Windows, Linux, and macOS.
+This guide explains how to configure a local SentraCore development environment across Windows, Linux, and macOS. Use it together with the [documentation index](../README.md) for architecture and packaging context.
 
 ---
 

index.html

@@ -5,7 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <meta
       name="description"
-      content="SentraCore — system intelligence, real-time monitoring, and a fast engine with a cross-platform desktop dashboard."
+      content="SentraCore: local-first system behavior intelligence—telemetry, stability signals, and a Flutter desktop dashboard with a loopback API."
     />
     <title>SentraCore — System intelligence for your machine</title>
     <link rel="icon" href="assets/img/favicon.ico" sizes="any" />