feat: add plugin architecture

skills/voice-call/SKILL.md

@@ -0,0 +1,29 @@
+---
+name: voice-call
+description: Start voice calls via the Clawdbot voice-call plugin.
+metadata: {"clawdbot":{"emoji":"📞","skillKey":"voice-call","requires":{"config":["plugins.entries.voice-call.enabled"]}}}
+---
+
+# Voice Call
+
+Use the voice-call plugin to start or inspect calls.
+
+## CLI
+
+```bash
+clawdbot voicecall status
+clawdbot voicecall start --to "+15555550123" --message "Hello"
+```
+
+## Tool
+
+Use `voice_call` for agent-initiated calls.
+
+Parameters:
+- `to` (string): phone number or provider target
+- `message` (string, optional): optional intro or instruction
+- `mode` ("call" | "status", optional)
+
+Notes:
+- Requires the voice-call plugin to be enabled.
+- Plugin config lives under `plugins.entries.voice-call.config`.