refactor!: rename chat providers to channels

docs/channels/troubleshooting.md

@@ -0,0 +1,21 @@
+---
+summary: "Channel-specific troubleshooting shortcuts (Discord/Telegram/WhatsApp)"
+read_when:
+  - A channel connects but messages don’t flow
+  - Investigating channel misconfiguration (intents, permissions, privacy mode)
+---
+# Channel troubleshooting
+
+Start with:
+
+```bash
+clawdbot doctor
+clawdbot channels status --probe
+```
+
+`channels status --probe` prints warnings when it can detect common channel misconfigurations, and includes small live checks (credentials, some permissions/membership).
+
+## Channels
+- Discord: [/channels/discord#troubleshooting](/channels/discord#troubleshooting)
+- Telegram: [/channels/telegram#troubleshooting](/channels/telegram#troubleshooting)
+- WhatsApp: [/channels/whatsapp#troubleshooting-quick](/channels/whatsapp#troubleshooting-quick)