docs: align Home.md + README addon list + Tags/Photo-Providers wording with dev state

- Home.md: addon list (9 real addons), MCP numbers (150+ tools, 30 resources, 27 scopes), admin-seeding text
- README.md: expand addon list from 5 to 9 (Lists/Budget/Documents/Naver/MCP in, Dashboard widgets out)
- Photo-Providers.md: 'Memories addon' -> photo provider toggles under Journey
- Admin-Addons.md: Journey works without photo providers; they are optional sub-toggles
- Tags-and-Categories.md: add Personal Tags section (user-scoped, MCP-only for now)

README.md

@@ -127,11 +127,15 @@ A self-hosted, real-time collaborative travel planner — with maps, budgets, pa
 
 #### 🧩 Addons (admin-toggleable)
 
+- **Lists** — packing lists + to-dos with templates, member assignments, optional bag tracking
+- **Budget** — expense tracker with splits, pie chart, multi-currency
+- **Documents** — file attachments on trips, places, and reservations
+- **Collab** — chat, notes, polls, day-by-day attendance
 - **Vacay** — personal vacation planner with calendar, 100+ country holidays, carry-over tracking
 - **Atlas** — world map of visited countries, bucket list, travel stats, streak tracking, liquid-glass UI
-- **Collab** — chat, notes, polls, day-by-day attendance
-- **Journey** — magazine-style travel journal with entries, photos, maps, moods
-- **Dashboard widgets** — currency converter and timezone clocks
+- **Journey** — magazine-style travel journal with entries, photos (Immich/Synology), maps, moods
+- **Naver List Import** — one-click import from shared Naver Maps lists
+- **MCP** — expose TREK to AI assistants via OAuth 2.1
 
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