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).

plugin.yaml

@@ -0,0 +1,24 @@
+name: wordvibe-hermes
+version: 1.0.0
+description: >-
+  Drive WordPress sites that run the WordVibe plugin — read/write files, edit code,
+  search the codebase, query the database, manage posts/plugins, run WP-CLI — through
+  the site's own built-in MCP server (WordVibe → Settings → MCP).
+author: WordVibe
+author_url: https://wordvibe.io
+homepage: https://wordvibe.io
+provides_tools:
+  - wordvibe_sites
+  - wordvibe_site_info
+  - wordvibe_tools
+  - wordvibe_call
+  - wordvibe_read_file
+  - wordvibe_write_file
+  - wordvibe_edit_file
+  - wordvibe_search
+requires_env:
+  - name: WORDVIBE_SITE_URL
+    description: "WordPress site URL (e.g. https://mysite.com). MCP Server Mode must be enabled in WordVibe → Settings → MCP."
+  - name: WORDVIBE_MCP_KEY
+    description: "MCP server key from WordVibe → Settings → MCP (Bearer token)."
+    secret: true