feat: add 9 new games and update help/README

New commands: numguess/ng, wordchain/wc/endwc, acronym/ac,
20q/q/answer, nhie, hottake, ttt/move, blackjack/hit/stand,
triviaduel/da. All per-room with AI-generated content where
applicable. callbacks.py wired up for new reaction handlers
(acronym votes, nhie, hottake). Help and README updated with
full command reference.

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

README.md

@@ -522,6 +522,75 @@ Periodic `TLS/TCP socket error: Connection reset by peer` in coturn logs. Normal
 
 ---
 
+## LotusBot
+
+LotusBot (`@lotusbot:matrix.lotusguild.org`) is a Matrix bot running on LXC 151 at `/opt/matrixbot/`.  
+All commands use the `!` prefix. Run `!help` in any room for the full list.
+
+### AI / Fun
+
+| Command | Description |
+|---------|-------------|
+| `!ask <question>` | Ask the AI anything |
+| `!fortune` | Get a fortune cookie |
+| `!8ball <question>` | Magic 8-ball (yes/no/maybe, funny style). `--debug` shows raw AI output |
+| `!roast @user` | Roast someone |
+| `!story <prompt>` | Generate a short story |
+| `!debate <topic>` | AI argues both sides of a topic |
+
+### Games
+
+| Command | Description |
+|---------|-------------|
+| `!wordle` | Daily Wordle-style word game |
+| `!trivia [category]` | Trivia question (gaming/tech/movies/music/science/anime/etc.) |
+| `!rps <rock\|paper\|scissors>` | Rock Paper Scissors |
+| `!poll <question> \| option1 \| option2...` | Create a reaction poll |
+| `!hangman [--hard] [--extended]` | Hangman — `--hard` uses long words, `--extended` adds more body parts |
+| `!guess <letter or word>` | Guess a letter or the full word in hangman |
+| `!scramble` | Unscramble the word before time runs out |
+| `!wyr` | Would You Rather — two AI-generated options, vote with reactions |
+| `!riddle` | AI generates a riddle — try to solve it! |
+| `!numguess` | Number Guess — bot picks 1–100 |
+| `!ng <number>` | Guess in an active number game (temperature hints included) |
+| `!wordchain` | Word Chain — each word must start with the last letter of the previous |
+| `!wc <word>` | Add a word to the chain |
+| `!endwc` | End the word chain and see the final score |
+| `!acronym` | AI picks an acronym — submit the funniest expansion with `!ac` then vote |
+| `!ac <expansion>` | Submit an acronym expansion |
+| `!20q` | 20 Questions — AI thinks of something, you ask yes/no questions |
+| `!q <question>` | Ask a yes/no question in 20Q |
+| `!answer <guess>` | Guess the answer in 20Q |
+| `!nhie` | Never Have I Ever — react 🙋 (have) or 🙅 (never) |
+| `!hottake` | AI generates a hot take — react 🔥 (agree) or 💧 (disagree) |
+| `!ttt @user` | Tic-Tac-Toe — challenge someone |
+| `!move <1-9>` | Make a move in Tic-Tac-Toe |
+| `!blackjack` | Play Blackjack against the dealer |
+| `!hit` | Draw another card in Blackjack |
+| `!stand` | Stand — dealer plays out |
+| `!triviaduel @user` | Trivia Duel — first-to-3 battle |
+| `!da <A/B/C/D or answer>` | Answer in a Trivia Duel |
+
+### Random
+
+| Command | Description |
+|---------|-------------|
+| `!flip` | Flip a coin |
+| `!roll [NdN]` | Roll dice (e.g. `!roll 2d6`) |
+| `!random <min> <max>` | Random number in range |
+| `!champion` | Pick a random champion |
+| `!agent [role]` | Pick a random Valorant agent |
+
+### Server
+
+| Command | Description |
+|---------|-------------|
+| `!minecraft` | Check Minecraft server status |
+| `!ping` | Check bot latency |
+| `!health` | Bot health + uptime stats |
+
+---
+
 ## Tech Stack
 
 | Component | Technology | Version |