fix(cli): add messaging to configurable toolsets

[sgaofen]

Summary

• add the missing messaging entry to CONFIGURABLE_TOOLSETS
• keep send_message visible when gateway platforms resolve composite toolsets like hermes-telegram
• add regression tests for the configurable toolset registry and Telegram default platform resolution

Root Cause

Issue #8616 came from _get_platform_tools() reverse-mapping composite platform toolsets back through CONFIGURABLE_TOOLSETS. The runtime messaging toolset already exists in toolsets.py, but because it was missing from the configurable registry, gateway platforms never re-enabled it and send_message was silently dropped from platform sessions.

Fixes #8616.

Testing

• uv run --extra dev pytest tests/hermes_cli/test_tools_config.py

Platform Tested

• macOS 15.x (Apple Silicon)

Contribution Guide Notes

• Reviewed CONTRIBUTING.md and checked for existing open PRs before submitting this scoped bug fix.
• Ran the targeted verification commands listed above for this PR. I have not claimed a full repo-wide pytest tests/ -q pass unless explicitly noted.

[teknium1]

Thanks for the thorough write-up and for tracking down the root cause in _get_platform_tools() — this was a real bug.

This is an automated hermes-sweeper review. The fix has already landed on main.

• hermes_cli/tools_config.py line 68 — messaging is present in CONFIGURABLE_TOOLSETS on current main.
• Commit da8bab77f (fix(cli): restore messaging toolset for gateway platforms, 2026-04-13) added the identical +1 line to tools_config.py and the same regression tests (test_configurable_toolsets_include_messaging + test_get_platform_tools_default_telegram_includes_messaging) to tests/hermes_cli/test_tools_config.py.

The PR's change is fully superseded by that commit. Closing as implemented on main.