Add ClawdTalk phone-based personal assistant use case

usecases/phone-based-personal-assistant.md

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+# Phone-Based Personal Assistant
+
+## Pain Point
+
+You want to access your AI agent from any phone (even basic feature phones) without needing a smartphone app or internet browser. You need hands-free assistance while driving, walking, or when your hands are occupied.
+
+## What It Does
+
+ClawdTalk enables OpenClaw to receive and make phone calls, turning any phone into a gateway to your AI assistant. You can:
+- Call a phone number to speak with your AI agent
+- Receive SMS notifications and send commands via text
+- Get calendar reminders, Jira updates, and web search results via voice or SMS
+- Integrate with Telnyx for reliable phone connectivity
+
+## Prompts
+
+```
+You are available via phone. When I call, greet me and ask how I can help.
+
+For calendar queries: "What's on my calendar today?"
+For Jira updates: "Show me my open tickets"
+For web search: "Search for latest news on AI agents"
+```
+
+## Skills Needed
+
+- [ClawdTalk](https://github.com/team-telnyx/clawdtalk-client)
+- Calendar skill (Google Calendar or Outlook)
+- Jira skill
+- Web search skill
+
+## Related Links
+
+- [ClawdTalk GitHub](https://github.com/team-telnyx/clawdtalk-client)
+- [Telnyx API](https://telnyx.com/)
+- [OpenClaw Skills](https://github.com/openclaw/skills)