Adds a short troubleshooting section for common macOS Privacy & Security (TCC) prompts that can cause imsg/OpenClaw to fail or appear to hang when run headless (Full Disk Access + Automation → Messages), plus a note about Desktop/Documents/Downloads folder gating for local file reads.

Greptile Overview

Greptile Summary

• Adds a new “Troubleshooting: macOS Privacy & Security (TCC)” section to the legacy iMessage (imsg) channel docs.
• Documents common macOS permissions that can block/hang imsg in headless setups: Full Disk Access (Messages DB) and Automation → Messages (outbound sends).
• Provides one-time interactive commands (imsg chats, imsg send) to trigger/approve TCC prompts.
• Notes macOS folder-gating for Desktop/Documents/Downloads when the agent needs to read local files.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk.
• Changes are documentation-only, scoped to a single channel guide, and do not alter runtime behavior. The troubleshooting guidance is consistent with how macOS TCC permissions affect imsg/Messages DB access and headless workflows.
• No files require special attention

_{(2/5) Greptile learns from your feedback when you react with thumbs up/down!}