Name MCP action tools after the action name instead of its id

[mirecekd]

Problem

Configured actions are exposed to Grok as MCP tools named action_<32 hex chars>. Grok shows the tool name, not the optional title, so every action looks the same (action_3f9a...) and the user cannot tell which one is which.

Change

• Tool name is now an ASCII slug of the action name, e.g. Open the gate -> open_the_gate, Otevřít bránu -> otevrit_branu (max 48 chars).
• On a clash (two names with the same slug, an empty slug, or the reserved entities_status) the first 6 chars of the action id are appended.
• The legacy action_<id> name is still accepted by tools/call, so existing clients and cached tool lists keep working.
• Tools still have an empty input schema; nothing in the permission model changes. The MCP title and description are unchanged.
• Diagnostics still classify these calls as configured_action.

Note: the slug depends on the action name, so renaming an action changes its tool name (renaming already revokes access, as documented).

Tests

Updated the tool-list test and added tests for the readable name, the legacy name and slug/clash handling. python -m unittest discover -s tests (79 tests) and tools/check_package.py pass. Also running on a live HA instance with the connector loaded.