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/package.json

@@ -17,6 +17,8 @@
   "dependencies": {
     "@mosaic/shared": "workspace:*",
     "@mosaic/ui": "workspace:*",
+    "@tanstack/react-query": "^5.90.20",
+    "date-fns": "^4.1.0",
     "next": "^16.1.6",
     "react": "^19.0.0",
     "react-dom": "^19.0.0"
@@ -25,10 +27,12 @@
     "@mosaic/config": "workspace:*",
     "@testing-library/jest-dom": "^6.6.3",
     "@testing-library/react": "^16.2.0",
+    "@testing-library/user-event": "^14.6.1",
     "@types/node": "^22.13.4",
     "@types/react": "^19.0.8",
     "@types/react-dom": "^19.0.3",
     "@vitejs/plugin-react": "^4.3.4",
+    "@vitest/coverage-v8": "^3.2.4",
     "jsdom": "^26.0.0",
     "typescript": "^5.8.2",
     "vitest": "^3.0.8"