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

apps/web/.dockerignore

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+# Node modules
+node_modules
+npm-debug.log
+yarn-error.log
+pnpm-debug.log
+
+# Build output
+.next
+out
+dist
+build
+*.tsbuildinfo
+
+# Tests
+coverage
+.vitest
+test
+*.spec.ts
+*.test.ts
+*.spec.tsx
+*.test.tsx
+
+# Development files
+.env
+.env.*
+!.env.example
+
+# IDE
+.vscode
+.idea
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Git
+.git
+.gitignore
+
+# Documentation
+README.md
+docs
+
+# Logs
+logs
+*.log
+
+# Turbo
+.turbo