Host form/list UX polish: editable hostname, created-by column, mobile tabs, more help text

- Plain hosts can now be renamed after creation (wildcard/child/cache hosts
  stay locked, since other records reference them by name). Migrates the
  cert cache key on rename.
- Along the way, found and fixed a real bug in the vendored model-redis
  library: its rename path leaves a stray, incomplete hash behind under
  the old key when an `always`-type field (updated_on) is defined earlier
  in the schema than the primary key -- silently blocking that hostname
  from ever being reused. Worked around at the Host model level (can't
  patch node_modules).
- Host list now shows who created each host, and when.
- Host modal's tabs now scroll horizontally on narrow screens instead of
  overflowing awkwardly.
- Added missing inline help text (Target SSL, wildcard matching behavior).

Bumps to v1.1.9.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KDEx8ghuZR61pqPXc6da9C

nodejs/package.json

@@ -1,6 +1,6 @@
 {
   "name": "proxy-api",
-  "version": "1.1.8",
+  "version": "1.1.9",
   "private": true,
   "author": [
     {