Bump version to 1.7.0

- Version 1.7.0 'API' with Content API, admin guide page, anchor link fixes, code block styling

version.php

@@ -6,12 +6,23 @@
  */
 
 return [
-    'version' => '1.6.0',
-    'release_date' => '2026-06-24',
-    'codename' => 'Enhanced',
+    'version' => '1.7.0',
+    'release_date' => '2026-07-28',
+    'codename' => 'API',
     'status' => 'stable',
 
     'changelog' => [
+        '1.7.0' => [
+            'date' => '2026-07-28',
+            'changes' => [
+                'Content API for PHP content files (getAllPages, getPage, getMenu, getConfig, etc.)',
+                'Admin guide page with rendered markdown (CommonMark with TOC, tables, code blocks)',
+                'HeadingPermalinkExtension for anchor links in guide TOC',
+                'Deep links fixed: heading IDs moved from hidden permalink anchors to heading elements',
+                'Code block styling (light theme) in admin guide and frontend',
+                'Config form with separate fields (site_title, default_page, language, SEO, author, features)',
+            ]
+        ],
         '1.6.0' => [
             'date' => '2026-07-14',
             'changes' => [