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/Addons-Overview.md

@@ -6,7 +6,7 @@ Addons are optional features that an admin can enable or disable for the entire
 
 ## What addons are
 
-Each addon extends TREK with functionality beyond the core trip-planning features. Addons are managed globally — you cannot enable an addon for one user only. Once enabled, the feature becomes available to all users on the instance.
+Each addon extends TREK with functionality beyond the core trip-planning features. Addons are managed globally: you cannot enable an addon for one user only. Once enabled, the feature becomes available to all users on the instance.
 
 ## Addon list
 
@@ -15,17 +15,19 @@ The following addons are registered in the system (defined in `server/src/db/see
 | Addon ID | Type | Description |
 |---|---|---|
 | `mcp` | integration | Exposes TREK data and actions through the Model Context Protocol for AI assistant integrations. |
-| `packing` | trip | **Lists** — packing lists and to-do tasks for your trips. See [Packing-Lists](Packing-Lists). |
-| `budget` | trip | **Costs** — track and split trip expenses. See [Budget-Tracking](Budget-Tracking). |
-| `documents` | trip | Document and file attachments for trips — store itineraries, visa copies, and other files. See [Documents-and-Files](Documents-and-Files). |
+| `packing` | trip | **Lists**: packing lists and to-do tasks for your trips. See [Packing-Lists](Packing-Lists). |
+| `budget` | trip | **Costs**: track and split trip expenses. See [Budget-Tracking](Budget-Tracking). |
+| `documents` | trip | Document and file attachments for trips: itineraries, visa copies and other files. Can be kept in step with a self-hosted document store (Paperless-ngx, Papra, Nextcloud, OpenCloud, Synology). See [Documents-and-Files](Documents-and-Files) and [Document-Sync](Document-Sync). |
 | `vacay` | global | Personal vacation day planner with a year calendar, holiday packs, collaborator fusion, and read-only calendar sharing. See [Vacay](Vacay). |
 | `atlas` | global | Interactive world map showing countries and regions you have visited, plus a bucket list. See [Atlas](Atlas). |
 | `collab` | trip | Notes, polls, and live chat for trip collaboration. See [Real-Time-Collaboration](Real-Time-Collaboration). |
-| `journey` | global | Trip tracking and travel journal — check-ins, photos, and daily stories. See [Journey-Journal](Journey-Journal). |
+| `roadtrip` | trip | **Road trip**: plans a trip as one continuous drive, with stops along the route, driving times and arrival times that update themselves. Off by default. See [Road-Trip](Road-Trip). |
+| `journey` | global | Trip tracking and travel journal: check-ins, photos, and daily stories. See [Journey-Journal](Journey-Journal). |
 | `collections` | global | A personal, server-wide library of saved places in named lists, with idea/want/visited status, categories, and fusion sharing with per-member roles. See [Collections](Collections). |
 | `airtrail` | integration | Sync flights from your self-hosted AirTrail instance into trips. |
-| `llm_parsing` | integration | AI Parsing — an LLM fallback that extracts bookings from confirmation files KDE Itinerary can't read. See [AI-Booking-Import](AI-Booking-Import). |
-| `naver_list_import` | trip | Import places from shared Naver Maps lists directly into a trip. |
+| `dawarich` | integration | Read the stays and recorded routes of each user's own Dawarich instance, offered as suggestions to confirm. Read-only, nothing is written back. See [Dawarich](Dawarich). |
+| `llm_parsing` | integration | **AI Parsing**: an LLM fallback that extracts bookings from confirmation files KDE Itinerary can't read. See [AI-Booking-Import](AI-Booking-Import). |
+| `naver_list_import` | integration | Import places from shared Naver Maps lists directly into a trip. |
 
 
 ## Enabling addons
@@ -35,3 +37,5 @@ The following addons are registered in the system (defined in `server/src/db/see
 ## Per-addon sub-features
 
 Some addons expose sub-features that an admin can independently toggle. The [Real-Time-Collaboration](Real-Time-Collaboration) addon, for example, lets an admin decide which of its four sub-features (chat, notes, polls, and what's next) are active across the instance. These are configured from the [Admin-Addons](Admin-Addons) panel alongside the addon's main toggle.
+
+The **Documents** addon carries one switch per document store: Paperless-ngx, Papra, Nextcloud, OpenCloud and Synology Drive. They are off by default and only show while Documents is on, and switching Documents off switches all of them off. The stores themselves are connected per trip, in the trip's file manager. See [Document-Sync](Document-Sync).