docs(voice-call): add Twilio setup guide

docs/plugins/voice-call.md

@@ -28,6 +28,23 @@ The Voice Call plugin runs **inside the Gateway process**.
 
 If you use a remote Gateway, install/configure the plugin on the **machine running the Gateway**, then restart the Gateway to load it.
 
+## Twilio setup (getting the credentials)
+
+You’ll need:
+- **Account SID** (`AC...`)
+- **Auth Token** (treat like a password)
+- A Twilio **Voice-capable phone number** to use as `from` (E.164, like `+15551234567`)
+
+Steps:
+1) Create/sign in to Twilio: `https://www.twilio.com/`
+2) Open the Twilio Console: `https://console.twilio.com/`
+3) Find your **Account SID** + **Auth Token** (typically on the Console dashboard / Account settings).
+4) Buy (or select) a Twilio phone number with **Voice** capability:
+   - Console → Phone Numbers → Manage → Buy a number
+5) (Trial accounts) You may need to verify the destination `to` numbers before Twilio allows outbound calling.
+
+Tip: keep `twilio.authToken` out of git; store it in `~/.clawdbot/clawdbot.json` or your Control UI config, not in repo files.
+
 ## Install
 
 ### Option A: install from npm (recommended)

extensions/voice-call/README.md

@@ -62,6 +62,15 @@ Dev fallback (no network):
 { provider: "log" }
 ```
 
+## Twilio credentials (quick notes)
+
+You’ll need a Twilio account, your **Account SID**, your **Auth Token**, and a Twilio **Voice-capable** phone number to use as `from`.
+
+- Signup: `https://www.twilio.com/`
+- Console: `https://console.twilio.com/`
+
+Full setup guide: `https://docs.clawd.bot/plugins/voice-call`
+
 ## CLI
 
 ```bash