release: v3.3.0 — platform hardening & admin unification (Track F.1–F.8)

Plugin visibility control, UI/UX fixes, unified admin panel,
database-backed settings, and security hardening.

Highlights:
- ENABLED_PLUGINS env var for plugin visibility (F.1)
- Admin designation via ADMIN_EMAILS (F.4a)
- Master key scope control (F.4b)
- Panel unification + settings from UI (F.4c)
- exec() removal, shell injection fix, bcrypt migration (F.8)
- 5 new test suites

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mcphub-server"
-version = "3.2.0"
+version = "3.3.0"
 description = "AI-native management hub for WordPress, WooCommerce, and self-hosted services via Model Context Protocol (MCP)"
 authors = [
     {name = "MCP Hub", email = "contact@mcphub.dev"}