fix(voice-call): add missing region/edge uiHints, schema patterns, docs

- Add twilio.region and twilio.edge uiHints to index.ts (was only in
  openclaw.plugin.json)
- Add pattern constraints to JSON schema to match Zod validation
- Allow digits in edge regex (^[a-z0-9-]+$) for future-proofing
- Mention region/edge in SKILL.md Twilio config line

extensions/voice-call/index.ts

@@ -46,6 +46,16 @@ const voiceCallConfigSchema = {
     "telnyx.publicKey": { label: "Telnyx Public Key", sensitive: true },
     "twilio.accountSid": { label: "Twilio Account SID" },
     "twilio.authToken": { label: "Twilio Auth Token", sensitive: true },
+    "twilio.region": {
+      label: "Twilio Region",
+      help: "Processing region: ie1 (Ireland) or au1 (Australia). Omit for US1 (default). Requires region-specific auth credentials.",
+      advanced: true,
+    },
+    "twilio.edge": {
+      label: "Twilio Edge Location",
+      help: "Edge location (e.g. dublin, sydney, ashburn). Auto-inferred from region if omitted.",
+      advanced: true,
+    },
     "outbound.defaultMode": { label: "Default Call Mode" },
     "outbound.notifyHangupDelaySec": {
       label: "Notify Hangup Delay (sec)",

extensions/voice-call/openclaw.plugin.json

@@ -206,10 +206,12 @@
             "type": "string"
           },
           "region": {
-            "type": "string"
+            "type": "string",
+            "pattern": "^[a-z0-9]+$"
           },
           "edge": {
-            "type": "string"
+            "type": "string",
+            "pattern": "^[a-z0-9-]+$"
           }
         }
       },

extensions/voice-call/src/config.ts

@@ -78,7 +78,7 @@ export const TwilioConfigSchema = z
      */
     edge: z
       .string()
-      .regex(/^[a-z-]+$/)
+      .regex(/^[a-z0-9-]+$/)
       .optional(),
   })
   .strict();

skills/voice-call/SKILL.md

@@ -39,7 +39,7 @@ Notes:
 
 - Requires the voice-call plugin to be enabled.
 - Plugin config lives under `plugins.entries.voice-call.config`.
-- Twilio config: `provider: "twilio"` + `twilio.accountSid/authToken` + `fromNumber`.
+- Twilio config: `provider: "twilio"` + `twilio.accountSid/authToken` + `fromNumber`. Optional `twilio.region` (ie1, au1) and `twilio.edge` (dublin, sydney) for non-US regions.
 - Telnyx config: `provider: "telnyx"` + `telnyx.apiKey/connectionId` + `fromNumber`.
 - Plivo config: `provider: "plivo"` + `plivo.authId/authToken` + `fromNumber`.
 - Dev fallback: `provider: "mock"` (no network).