release(v1.6.4): runtime version injection + CI bump/sync; caching tweaks

public/.htaccess

@@ -50,6 +50,12 @@ RewriteEngine On
   <FilesMatch "\.(js|css)$">
     Header set Cache-Control "public, max-age=3600, must-revalidate"
   </FilesMatch>
+  # version.js should always revalidate (it changes on releases)
+  <FilesMatch "^js/version\.js$">
+    Header set Cache-Control "no-cache, no-store, must-revalidate"
+    Header set Pragma "no-cache"
+    Header set Expires "0"
+  </FilesMatch>
 </IfModule>
 
 # -----------------------------

public/index.html

@@ -563,6 +563,7 @@
       </div>
     </div>
   </div>
+  <script src="js/version.js"></script>
   <script type="module" src="js/main.js"></script>
 </body>
 

public/js/adminPanel.js

@@ -4,7 +4,7 @@ import { loadAdminConfigFunc } from './auth.js';
 import { showToast, toggleVisibility, attachEnterKeyListener } from './domUtils.js';
 import { sendRequest } from './networkUtils.js';
 
-const version = "v1.6.3";
+const version = window.APP_VERSION || "dev";
 const adminTitle = `${t("admin_panel")} <small style="font-size:12px;color:gray;">${version}</small>`;
 
 

public/js/version.js

@@ -0,0 +1,2 @@
+// default for dev
+window.APP_VERSION = "dev";