docs: wiki update for API docs, printer installer, geenforce cutover, timezone

Execute WIKI-UPDATE-PLAN.md (14 items):
- NEW docs/PRINTER-INSTALLER.md: install-list / pc-default / install-batch
  contract + public installer map page.
- NEW-shape docs/API-REFERENCE.md: index + pointer to the live generated docs
  (/api/docs Redoc, openapi.json, llms.txt, MCP), replacing a stale full dump.
- geenforce cutover + GE-ENFORCE-DISPLAY/CLIENT/DEPLOY: server-first display
  dispatcher (display-role by FQDN, display-type.txt fallback), dashboarddefaults
  FQDN keying, legacy kiosk autostart self-heal (Wow6432Node), per-PC-type
  cutover status.
- PLUGINS: printers/slides rows + plugin-permissions note (slides.manage).
- IMPORT-API: dashboarddefaults FQDN-first keying.
- CONFIG: word-wise search, site_timezone setting.
- PILOT-DEPLOY: servers-to-network reclassify step. IMPORT-ADOPTION: fixup note.
- CLAUDE.md: test count 1077->1159, HTTPS-cutover state. CHANGELOG: timezone +
  kiosk-autostart fixes, site_timezone setting.

CHANGELOG.md

@@ -10,6 +10,14 @@ ADR-007 and ADR-002.
 
 ## [Unreleased]
 
+### Added
+
+- Configurable site timezone: a `site_timezone` site setting (default
+  `America/New_York`, public-readable), editable in Settings > Site >
+  Localization. Notification start/end times are entered and displayed in this
+  zone, and daily-reset notification expiry is computed in it. A shared
+  `frontend/src/utils/datetime.js` (Intl-based, DST-safe) does the conversion.
+
 ### Changed
 
 - Asset detail pages (machines, PCs, printers, network devices, measuring
@@ -24,6 +32,15 @@ ADR-007 and ADR-002.
 
 ### Fixed
 
+- Notification start/end times were off by the timezone offset (a 2:34 PM entry
+  displayed as 6:34 PM). Times are now stored UTC and shown/entered in the site
+  timezone; the calendar keys all-day events off the site-local day.
+- Kiosk displays showed a white screen on login: a legacy 32-bit kiosk
+  installer's autostart kept relaunching Edge at a now-dead URL. The install's
+  HKLM Run value was WOW64-redirected into `SOFTWARE\Wow6432Node\...\Run` and
+  survived earlier cleanup. The `gea-shopfloor-display` dispatcher now purges
+  the legacy autostarts every enforce cycle across both registry views, all
+  user hives, Run/RunOnce/policy-Run, and every Startup folder.
 - List pages keep the current page (and search term) in the URL query, so
   paging to page 9, opening an item, and hitting browser Back returns to page 9
   instead of resetting to page 1. Applies to all 18 list views via a shared