docs(wiki): document road trip, document sync, the TREK Places API and Dawarich

The 4.3.0 features had no pages, or pages that described an earlier
state. Three new pages and a rewrite:

- Road-Trip: the addon from enabling it to the phone tab, stays and a
  stop's End as the time you leave, pinned times and the backward
  schedule, daily travel times, the three driving limits, search along
  the route, via points, other ways and what avoiding tolls needs,
  following a track, the warning layer, MCP tools and troubleshooting.
- Document-Sync: switching stores on, binding a trip, what each store
  asks for and binds, direction and delete rules, conflicts, the
  mass-delete guard, renames and restores, what needs a look, limits,
  private addresses, and the MCP tools.
- TREK-Places-API: what the index is, where TREK asks it, what leaves
  the instance, switching it off or pointing it at a copy of your own,
  and what happens when it is down.
- Dawarich: brought up to date with suggestions, the journal fold,
  recorded routes, Atlas proposals and the wish list.

Places and search, documents, the addon and admin overviews, MCP
tools, environment variables, internal network access, the sidebar and
home link the new pages, and the in-app help picks them up from the
sidebar.

wiki/_Sidebar.md

@@ -31,6 +31,7 @@
 - [[Trip Members and Sharing|Trip-Members-and-Sharing]]
 - [[Trip Planner Overview|Trip-Planner-Overview]]
 - [[Places and Search|Places-and-Search]]
+- [[TREK Places API|TREK-Places-API]]
 - [[Day Plans and Notes|Day-Plans-and-Notes]]
 - [[Map Features|Map-Features]]
 - [[Route Optimization|Route-Optimization]]
@@ -47,6 +48,7 @@
 - [[Packing Templates|Packing-Templates]]
 - [[Todos and Tasks|Todos-and-Tasks]]
 - [[Documents and Files|Documents-and-Files]]
+- [[Document Sync|Document-Sync]]
 - [[Tags and Categories|Tags-and-Categories]]
 - [[Calendar Feeds|Calendar-Feeds]]
 
@@ -69,6 +71,7 @@
 - [[Atlas]]
 - [[Journey Journal|Journey-Journal]]
 - [[Collections]]
+- [[Road Trip|Road-Trip]]
 - [[Dashboard Widgets|Dashboard-Widgets]]
 
 ## Plugins
@@ -80,6 +83,7 @@
 
 ## Integrations
 - [[Public API|Public-API]]
+- [[Dawarich]]
 
 ## AI / MCP
 - [[MCP Overview|MCP-Overview]]