feat: add reminders page, BMad skills upgrade, MCP server refactor

- Add reminders page with navigation support
- Upgrade BMad builder module to skills-based architecture
- Refactor MCP server: extract tools and auth into separate modules
- Add connections cache, custom AI provider support
- Update prisma schema and generated client
- Various UI/UX improvements and i18n updates
- Add service worker for PWA support

Made-with: Cursor

.agent/skills/bmad-brainstorming/template.md

@@ -0,0 +1,15 @@
+---
+stepsCompleted: []
+inputDocuments: []
+session_topic: ''
+session_goals: ''
+selected_approach: ''
+techniques_used: []
+ideas_generated: []
+context_file: ''
+---
+
+# Brainstorming Session Results
+
+**Facilitator:** {{user_name}}
+**Date:** {{date}}