Notification start/end times displayed and stored wrong by the tz offset
(a 2:34 PM entry showed 6:34 PM). Two stacked bugs: to_dict emitted stored
UTC as naive ISO (no offset) so the browser read it as local, and the form
filled the datetime-local input from toISOString() (UTC).
Fix and generalize to a configurable site timezone (multi-site):
- New setting site_timezone (default America/New_York), public, editable in
Settings > Site > Localization (common-zone dropdown).
- Backend tags datetimes UTC (_utc_iso); parse normalizes to naive UTC
(_parse_utc); daily-reset expiry uses the site zone (_next_site_time);
calendar allDay events key off the site-local day (_site_date).
- Shared frontend util datetime.js (Intl-based, DST-safe) converts between a
UTC instant and a site-zone wall clock. Notification form, list, and
calendar all render/enter in the site zone.
Relocate warranty, measuringtools, network, printers, usb, notifications,
computers, and slides into plugins/<name>/frontend/. Each plugin's views are
pulled from wherever they lived (own dir, plus the shared views/settings/,
views/reports/, views/print/ dirs, and top-level views) into the plugin's
frontend/views/, and its route file becomes the self-contained routes.js.
Handled the messy cases:
- computers: name mismatch (its views live in views/pcs/) - moved by following
the route file's own imports, so the dir name did not matter. Its OS/access-
protocol/PC-type settings views move with it (only computers.js routed them).
- network: NetworkHub's sibling sub-views (NetworkDevicesList, SubnetsBrowse,
not directly routed) moved too so its `./` imports resolve.
- printers: the qrLogo helper is SHARED with core AssetLabel, so it stays in
views/print/ and PrinterQR imports it via @/views/print/qrLogo.
- slides: route file is toplevel-only (TVDashboard); SlideManager stays core
(core.js routes /settings/slides).
frontend/src/views/ now holds only core views; frontend/src/router/routes/ holds
only core.js. All 13 plugins are self-contained under plugins/<name>/frontend/.
Verified live: Network (hub + moved sub-views), Computers (name mismatch),
GE-Enforce (helper), printedparts all render from their staged frontends. Build +
58 vitest + naming green.
