feat: ml-worker self-heals models; restore modal tag-input auto-focus

ml-worker now fetches WD14 + SigLIP on container start via an entrypoint
script that calls huggingface_hub with a populated local_dir. HF does a
content-based integrity check, so subsequent starts are a no-op. Transient
HF outages warn and continue when a local copy is already present. This
drops the baked-in model layer (~4 GB) from the image so it pushes cleanly
through registry proxies and no longer bloats every tagged release.

view-modal.js restores the desktop-only auto-focus of the tag input on
openModal (with touch-device guard). The block existed in an earlier
main commit (0bf1961) but was absent from the post-corruption
consolidation commit.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/static/js/view-modal.js

@@ -811,6 +811,14 @@ document.addEventListener('DOMContentLoaded', () => {
     modal.classList.add('active');
     updateImage(index);
     history.replaceState({ modalIndex: index }, '', window.location.href);
+    // Desktop only — skip on touch devices to avoid popping the on-screen keyboard
+    if (tagInput && !isTouchDevice()) {
+      setTimeout(() => tagInput.focus(), 100);
+    }
+  }
+
+  function isTouchDevice() {
+    return ('ontouchstart' in window) || (navigator.maxTouchPoints > 0);
   }
 
   function closeModal() {