ui: version-display via JS, undo-toast centering, ctrl+enter save, test progress polish

* version: every span that shows v<APP_VERSION> in the page chrome now
  carries data-app-version, and checkAuth() patches them in from the
  /api/auth/status response so the GUI version doesn't go stale when
  PHP is cached behind anything that revalidates lazily.

* undo: tailwind v4 compiles `-translate-x-1/2` to the *new* CSS
  `translate` property, which then stacks with the inline `transform`
  the toast set — the box ended up shifted ~ -100% and looked left-
  anchored. Drop the tailwind utility, set `translate` directly inline
  so there's one source of truth for the offset.

* editor: ctrl/cmd+enter while the editor modal is open now invokes
  saveCard() (= save + close), pairing with the existing ctrl+s
  (save only) and ctrl+shift+s (save+close) shortcuts.

* collab buckets: drop the inset left edge from .bucket-tab-collab and
  the matching pulse-keyframe shadow — the bar tab now reads as a
  normal bucket tab, just with the unread dot + 3-cycle pulse on update.

* collab create dialog: drop the box border / background from
  .collab-toggle-row and .collab-members so the toggle and the user
  list sit directly on the modal background instead of looking like
  nested input boxes.

* test progress strip: ensureProgressBar() now also pushes the body
  down by 30px AND shrinks it via height: calc(100vh - 30px) so the
  fixed-top bar doesn't clip the footer (body is h-screen +
  overflow-hidden in the core layout). hideProgress() clears both
  inline styles when the run finishes.

chore: bump version to 0.9.2

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

public/index.php

@@ -1185,7 +1185,7 @@ if (str_starts_with($route, '/api/')) {
             <div class="flex items-center gap-3">
                 <i class="ph ph-terminal-window text-t-accent text-xl"></i>
                 <h1 class="brand font-pixel text-t-accent text-lg tracking-wider">hyprcrd</h1>
-                <span class="text-[10px] text-t-dim font-pixel ml-1">v<?= APP_VERSION ?></span>
+                <span class="text-[10px] text-t-dim font-pixel ml-1" data-app-version>v<?= APP_VERSION ?></span>
                 <button id="search-btn" class="flex items-center gap-2 px-2.5 py-1.5 text-xs border border-t-border text-t-muted hover:border-t-accent hover:text-t-accent transition-colors ml-3">
                     <i class="ph ph-magnifying-glass text-sm"></i><span class="font-pixel text-[10px]">Search</span>
                     <kbd class="text-[9px] text-t-dim border border-t-border rounded px-1 py-0.5 ml-1 font-pixel">ctrl+k</kbd>
@@ -1478,7 +1478,7 @@ if (str_starts_with($route, '/api/')) {
                 </section>
 
                 <div class="pt-4 border-t border-t-border text-center">
-                    <span class="font-pixel text-[10px] text-t-dim">© <?= date('Y') ?> hyprcrd · v<?= APP_VERSION ?></span>
+                    <span class="font-pixel text-[10px] text-t-dim">© <?= date('Y') ?> hyprcrd · <span data-app-version>v<?= APP_VERSION ?></span></span>
                 </div>
             </div>
         </div>
@@ -1509,7 +1509,7 @@ if (str_starts_with($route, '/api/')) {
                         <div class="flex flex-col items-center justify-center py-12 text-center">
                             <i class="ph ph-terminal-window text-t-accent text-5xl mb-4"></i>
                             <h1 class="brand font-pixel text-2xl text-t-accent tracking-wider mb-2">hyprcrd</h1>
-                            <p class="font-pixel text-[10px] text-t-dim mb-6">v<?= APP_VERSION ?></p>
+                            <p class="font-pixel text-[10px] text-t-dim mb-6" data-app-version>v<?= APP_VERSION ?></p>
                             <p class="text-xs text-t-muted leading-relaxed max-w-sm">Self-hosted card manager with markdown, tags, calendar, CalDAV sync, encrypted WebDAV notes, and Obsidian-compatible export.</p>
                             <div class="flex items-center gap-4 mt-8 text-t-dim">
                                 <div class="text-center"><div id="stats-cards" class="font-pixel text-lg text-t-bright">—</div><div class="font-pixel text-[8px] uppercase">cards</div></div>