Remove Welcome room from README (room no longer exists)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -63,7 +63,6 @@ Matrix bot and server infrastructure for the Lotus Guild homeserver (`matrix.lot
 | Memes | `!GK6v5cLEEnowIooQJv5jECfISUjADjt8aKhWv9VbG5U` | public |
 | Management | `!mEvR5fe3jMmzwd-FwNygD72OY_yu8H3UP_N-57oK7MI` | invite |
 | Cool Kids | `!R7DT3QZHG9P8QQvX6zsZYxjkKgmUucxDz_n31qNrC94` | invite |
-| Welcome | `!Y-wvNosuytqBOWampH9k-ta7bYXW7okqwBQ7PuRVBWE` | public |
 | Spam and Stuff | `!GttT4QYd1wlGlkHU3qTmq_P3gbyYKKeSSN6R7TPcJHg` | invite, **no E2EE** (hookshot) |
 
 **Power level roles (Cinny tags):**
@@ -145,7 +144,6 @@ Webhook URL format: `https://matrix.lotusguild.org/webhook/<uuid>`
 ### Room Structure
 - [x] The Lotus Guild space
 - [x] All core rooms with correct power levels and join rules
-- [x] Welcome room with react-to-join onboarding
 - [x] Spam and Stuff room for service notifications (hookshot)
 - [x] Custom room avatars
 - [ ] Read-only announcements room
@@ -193,10 +191,9 @@ Webhook URL format: `https://matrix.lotusguild.org/webhook/<uuid>`
 - [x] `!health` — bot uptime + service status
 
 ### Welcome System
-- [x] Auto-post welcome message in Welcome room on startup
-- [x] React-to-join: react with ✅ → bot invites to General, Commands, Memes
+- [x] Watches Space joins and DMs new members automatically
+- [x] React-to-join: react with ✅ in DM → bot invites to General, Commands, Memes
 - [x] Welcome event ID persisted to `welcome_state.json`
-- [x] Watches Space joins and DMs new members
 
 ### Wordle
 - [x] Daily puzzles with two-pass letter evaluation