fix(web): repair array-table.js syntax error and version static assets (#357)

Two issues left the v3 web UI's Overview (and other Alpine-driven tabs)
blank:

1. array-table.js had two safeSetHTML(target, `...`) calls that closed the
   template-literal argument with `; instead of `); — a SyntaxError that
   aborts the script and halts widget registration / Alpine initialization.

2. Static assets are served `Cache-Control: public, max-age=31536000,
   immutable` but were referenced without a cache-busting version (the header
   comment assumed "versioning via query params", which was only ever applied
   by hand to app.css). So edited JS/CSS never reached browsers — including
   fix #1.

Add a Flask url_defaults hook that appends each static file's mtime as a ?v=
param to every url_for('static', ...), so changed files get a new URL and are
refetched while unchanged files keep the long immutable cache. Drop the now
redundant manual ?v= on app.css.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

web_interface/static/v3/js/widgets/array-table.js

@@ -440,7 +440,7 @@
                 <h3 class="text-base font-semibold text-gray-900">Advanced Properties</h3>
                 <button type="button" onclick="window.closeArrayTableRowEditor()"
                         class="text-gray-400 hover:text-gray-600"><i class="fas fa-times"></i></button>
-            </div>`;
+            </div>`);
 
         const body = document.createElement('div');
         body.className = 'px-5 py-4 space-y-4';
@@ -512,7 +512,7 @@
             <button type="button" onclick="window.closeArrayTableRowEditor()"
                     class="px-4 py-2 text-sm text-gray-700 border border-gray-300 rounded-md hover:bg-gray-100">Cancel</button>
             <button type="button" id="array-row-editor-save"
-                    class="px-4 py-2 text-sm bg-blue-600 hover:bg-blue-700 text-white rounded-md">Save</button>`;
+                    class="px-4 py-2 text-sm bg-blue-600 hover:bg-blue-700 text-white rounded-md">Save</button>`);
 
         // Save handler
         footer.querySelector('#array-row-editor-save').onclick = function() {