feat(v3.13.0): settings live DB reads, remove Directus/Appwrite, admin stats

Settings fixes:
- MAX_SITES_PER_USER, USER_RATE_LIMIT_PER_MIN/HR now read from DB settings
  table (DB > ENV > default), so dashboard/settings changes apply without
  restart. Sync cache refreshed on every save or delete.
- /api/me reports the live DB value for max_sites_per_user.

Admin improvements:
- Admin users bypass per-user rate limiting entirely (role=admin or ADMIN_EMAILS).
- Admin Overview now shows platform stats: registered users, new users (7d),
  total user sites, available tools.

Plugin cleanup:
- Appwrite and Directus plugins removed from the active registry (8 plugins
  now: WordPress, WooCommerce, WordPress Specialist, Gitea, n8n, Supabase,
  OpenPanel, Coolify). Plugin code is retained for future re-enabling.
- Settings page plugin visibility list updated to match.

Mobile onboarding:
- Stepper steps on narrow viewports stack vertically with correct full border
  and rounded corners on each step.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.env.example

@@ -18,7 +18,7 @@
 # - /system/mcp             → System (17 tools, Master Key)
 # - /wordpress/mcp          → WordPress Core (65 tools)
 # - /woocommerce/mcp        → WooCommerce (28 tools)
-# - /wordpress-advanced/mcp → WordPress Advanced (22 tools)
+# - /wordpress-specialist/mcp → WordPress Specialist (51 tools)
 # - /gitea/mcp              → Gitea (56 tools)
 # - /n8n/mcp                → n8n Automation (56 tools)
 # - /supabase/mcp           → Supabase Self-Hosted (70 tools)
@@ -218,39 +218,31 @@ WORDPRESS_SITE1_CONTAINER=coolify-wp-site1  # For WP-CLI access (optional)
 # ==============================================================================
 
 # ==============================================================================
-# WORDPRESS ADVANCED PLUGIN
+# WORDPRESS SPECIALIST PLUGIN
 # ==============================================================================
 #
-# WordPress Advanced provides 22 advanced management tools:
-# - Database operations (7 tools): export, import, search, query, repair
-# - Bulk operations (8 tools): batch updates/deletes for posts, products, media
-# - System operations (7 tools): system info, cache, cron, error logs
+# WordPress Specialist provides 51 management tools across read / editor /
+# settings / install / admin tiers. Companion-backed (Airano MCP Bridge
+# v2.18.0+ — install wordpress-plugin/airano-mcp-bridge.zip on the WP
+# site). No Docker socket needed; replaced the deprecated wordpress_advanced
+# plugin (sunset 2026-05-04 in F.19.3.2-.3).
 #
-# REQUIRED: Docker container name for WP-CLI access
-# NOTE: WordPress Advanced has the SAME configuration pattern as WordPress
-#       but requires 'container' configuration for WP-CLI access.
+# Tool surface:
+# - Read management (9 tools): plugins / themes / users / options / cron
+#   / maintenance status / system_info / phpinfo / disk_usage
+# - Page editing (11 tools): Gutenberg blocks + Elementor + Classic
+# - Theme dev (7 tools): install / activate / delete / file CRUD
+# - Plugin write (6 tools): install / activate / deactivate / update / delete
+# - Site config (6 tools): identity / reading / permalinks
+# - Site layout (7 tools): menus / widgets / customizer
+# - Database inspection (3 tools): db_size / db_tables / db_search
+#   (no SQL exposure; db_search wraps WP_Query)
+# - Bulk fan-out (2 tools): bulk_post_update / bulk_term_update (50-item
+#   cap, concurrency=10)
 #
-# Security Benefits:
-# - Separate API keys for advanced vs basic operations
-# - Better tool visibility (basic users don't see advanced tools)
-# - Granular access control
-#
-
-# Site 1 Advanced Configuration
-WORDPRESS_ADVANCED_SITE1_URL=https://example1.com
-WORDPRESS_ADVANCED_SITE1_USERNAME=admin
-WORDPRESS_ADVANCED_SITE1_APP_PASSWORD=your_app_password_here
-WORDPRESS_ADVANCED_SITE1_ALIAS=myblog
-WORDPRESS_ADVANCED_SITE1_CONTAINER=coolify-wp-site1  # REQUIRED for advanced features
-
-# Site 2 Advanced Configuration
-#WORDPRESS_ADVANCED_SITE2_URL=https://example2.com
-#WORDPRESS_ADVANCED_SITE2_USERNAME=admin
-#WORDPRESS_ADVANCED_SITE2_APP_PASSWORD=your_app_password_here
-#WORDPRESS_ADVANCED_SITE2_ALIAS=mystore
-#WORDPRESS_ADVANCED_SITE2_CONTAINER=coolify-wp-site2
-
-# Add more sites as needed (wordpress_advanced_site3, wordpress_advanced_site4, etc.)
+# Sites are managed via the web dashboard (DB-based), not env vars.
+# This section is documentation only — there are no env-var stanzas to
+# fill in for wordpress_specialist sites.
 
 # ==============================================================================
 # LOGGING & MONITORING