feat(#37-41): Add domains, ideas, relationships, agents, widgets schema

Schema additions for issues #37-41:

New models:
- Domain (#37): Life domains (work, marriage, homelab, etc.)
- Idea (#38): Brain dumps with pgvector embeddings
- Relationship (#39): Generic entity linking (blocks, depends_on)
- Agent (#40): ClawdBot agent tracking with metrics
- AgentSession (#40): Conversation session tracking
- WidgetDefinition (#41): HUD widget registry
- UserLayout (#41): Per-user dashboard configuration

Updated models:
- Task, Event, Project: Added domainId foreign key
- User, Workspace: Added new relations

New enums:
- IdeaStatus: CAPTURED, PROCESSING, ACTIONABLE, ARCHIVED, DISCARDED
- RelationshipType: BLOCKS, BLOCKED_BY, DEPENDS_ON, etc.
- AgentStatus: IDLE, WORKING, WAITING, ERROR, TERMINATED
- EntityType: Added IDEA, DOMAIN

Migration: 20260129182803_add_domains_ideas_agents_widgets

CHANGELOG.md

@@ -0,0 +1,80 @@
+# Changelog
+
+All notable changes to Mosaic Stack will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+- Complete turnkey Docker Compose setup with all services (#8)
+  - PostgreSQL 17 with pgvector extension
+  - Valkey (Redis-compatible cache)
+  - Authentik OIDC provider (optional profile)
+  - Ollama AI service (optional profile)
+  - Multi-stage Dockerfiles for API and Web apps
+  - Health checks for all services
+  - Service dependency ordering
+  - Network isolation (internal and public networks)
+  - Named volumes for data persistence
+  - Docker Compose profiles for optional services
+- Traefik reverse proxy integration (#36)
+  - Bundled mode: Self-contained Traefik instance with automatic service discovery
+  - Upstream mode: Connect to external Traefik instances
+  - None mode: Direct port exposure without reverse proxy
+  - Automatic SSL/TLS support (Let's Encrypt or self-signed)
+  - Traefik dashboard for monitoring routes and services
+  - Flexible domain configuration via environment variables
+  - Integration tests for all three deployment modes
+  - Comprehensive deployment guide with production examples
+- Comprehensive environment configuration
+  - Updated .env.example with all Docker variables
+  - PostgreSQL performance tuning options
+  - Valkey memory management settings
+  - Authentik bootstrap configuration
+- Docker deployment documentation
+  - Complete deployment guide
+  - Docker-specific configuration guide
+  - Updated installation instructions
+  - Troubleshooting section
+  - Production deployment considerations
+- Integration testing for Docker stack
+  - Service health check tests
+  - Connectivity validation
+  - Volume and network verification
+  - Service dependency tests
+- Docker helper scripts
+  - Smoke test script for deployment validation
+  - Makefile for common operations
+  - npm scripts for Docker commands
+- docker-compose.override.yml.example template for customization
+- Environment templates for Traefik deployment modes
+  - .env.traefik-bundled.example for bundled mode
+  - .env.traefik-upstream.example for upstream mode
+
+### Changed
+- Updated README.md with Docker deployment instructions
+- Enhanced configuration documentation with Docker-specific settings
+- Improved installation guide with profile-based service activation
+- Updated Makefile with Traefik deployment shortcuts
+- Enhanced docker-compose.override.yml.example with Traefik examples
+
+## [0.0.1] - 2026-01-28
+
+### Added
+- Initial project structure with pnpm workspaces and TurboRepo
+- NestJS API application with BetterAuth integration
+- Next.js 16 web application foundation
+- PostgreSQL 17 database with pgvector extension
+- Prisma ORM with comprehensive schema
+- Authentik OIDC authentication integration
+- Activity logging system
+- Authentication module with OIDC support
+- Database seeding scripts
+- Comprehensive test suite with 85%+ coverage
+- Documentation structure (Bookstack-compatible hierarchy)
+- Development workflow and coding standards
+
+[Unreleased]: https://git.mosaicstack.dev/mosaic/stack/compare/v0.0.1...HEAD
+[0.0.1]: https://git.mosaicstack.dev/mosaic/stack/releases/tag/v0.0.1