feat: initial wordvibe-hermes plugin

Hermes Agent plugin that drives WordPress sites running the WordVibe plugin over the site MCP server (POST /wp-json/wp-ide/v1/mcp, Bearer key from Settings -> MCP).

8 lean tools (sites, site_info, tools, call, read_file, write_file, edit_file, search) + /wordvibe slash command + bundled skill. The site exposes ~100 tools; the rest are reachable via wordvibe_call to keep the per-turn schema small.

Verified against a mock of the plugin JSON-RPC server: 15/15 scenarios (initialize, tools/list, tools/call, blocked tools, unknown tool, 403 when MCP off, connection refused, plain-permalink ?rest_route= fallback).

.gitignore

@@ -0,0 +1,9 @@
+__pycache__/
+*.py[cod]
+*.egg-info/
+.venv/
+venv/
+.env
+.DS_Store
+.idea/
+.vscode/