docs: update faq and install guidance

docs/providers/discord.md

@@ -174,6 +174,8 @@ Notes:
   - The bot lacks channel permissions (View/Send/Read History), or
   - Your config requires mentions and you didn’t mention it, or
   - Your guild/channel allowlist denies the channel/user.
+- **`requireMention: false` but still no replies**:
+  - `discord.groupPolicy` defaults to **allowlist**; you must either set it to `"open"` or explicitly list the channel under `discord.guilds.<id>.channels`.
 - **Permission audits** (`providers status --probe`) only check numeric channel IDs. If you use slugs/names as `discord.guilds.*.channels` keys, the audit can’t verify permissions.
 - **DMs don’t work**: `discord.dm.enabled=false`, `discord.dm.policy="disabled"`, or you haven’t been approved yet (`discord.dm.policy="pairing"`).
 

docs/providers/minimax.md

@@ -158,3 +158,24 @@ Use the interactive config wizard to set MiniMax without editing JSON:
 - Update pricing values in `models.json` if you need exact cost tracking.
 - See [/concepts/model-providers](/concepts/model-providers) for provider rules.
 - Use `clawdbot models list` and `clawdbot models set minimax/MiniMax-M2.1` to switch.
+
+## Troubleshooting
+
+### “Unknown model: minimax/MiniMax-M2.1”
+
+This usually means the **MiniMax provider isn’t configured** (no provider entry
+and no MiniMax auth profile/env key found). A fix for this detection is in
+**2026.1.12** (unreleased at the time of writing). Fix by:
+- Upgrading to **2026.1.12** (or run from source `main`), then restarting the gateway.
+- Running `clawdbot configure` and selecting **MiniMax M2.1**, or
+- Adding the `models.providers.minimax` block manually, or
+- Setting `MINIMAX_API_KEY` (or a MiniMax auth profile) so the provider can be injected.
+
+Make sure the model id is **case‑sensitive**:
+- `minimax/MiniMax-M2.1`
+- `minimax/MiniMax-M2.1-lightning`
+
+Then recheck with:
+```bash
+clawdbot models list
+```

docs/providers/whatsapp.md

@@ -310,4 +310,5 @@ WhatsApp can automatically send emoji reactions to incoming messages immediately
 - Fix: `clawdbot doctor` (or restart the gateway). If it persists, relink via `providers login` and inspect `clawdbot logs --follow`.
 
 **Bun runtime**
-- WhatsApp uses Baileys; run the gateway with **Node** for WhatsApp. (See Getting Started runtime note.)
+- Bun is **not recommended**. WhatsApp (Baileys) and Telegram are unreliable on Bun.
+  Run the gateway with **Node**. (See Getting Started runtime note.)