fix(ui): upload chunk size, cached file display, chat names, file delete, inline thumbnails

- Upload chunks capped at 64KB to avoid WebRTC DataChannel max-message-size
- Show cached files immediately while WebRTC connects (tabs visible during connection)
- Persist sender_name in chat store (SQLite) — no more UUID display in history
- File delete action in menu (node admin only, enforced server-side)
- FILE_DELETE / FILE_DELETE_ACK MNP message types
- Inline image thumbnails in chat attachments (download+decrypt, Signal-style)
- Member panel: "Owner" label instead of "Group admin" to avoid hub/group admin confusion
- Create group page: hint about needing a node
- Refresh index after chat file attachment upload

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/style.css b/packages/meshbay-hub/src/meshbay_hub/static/style.css
index 6e1eedd..542c672 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/style.css
+++ b/packages/meshbay-hub/src/meshbay_hub/static/style.css
@@ -674,12 +674,23 @@ button:disabled { opacity: 0.5; cursor: not-allowed; }
   font-weight: 500;
   font-size: 0.88em;
 }
+.chat-att-thumb {
+  max-width: 200px;
+  max-height: 200px;
+  border-radius: 6px;
+  object-fit: contain;
+  display: block;
+  cursor: pointer;
+}
 .chat-att-size {
   font-size: 0.75em;
   color: var(--text-dim);
 }
 .chat-bubble-own .chat-att-size { color: rgba(255, 255, 255, 0.6); }
 
+.file-menu button.danger { color: var(--error); }
+.file-menu button.danger:hover { background: var(--error-bg); }
+
 /* ── Download button + progress ──────────────────────────────────────────── */
 
 .dl-btn {