feat: Phase 1 foundation - schema, auth, realtime, shell

- Rewrote Drizzle schema: 20 tables with enums, relations, indexes
- Generated migration with DROP TABLE records (v1 EAV removal)
- Added passkey auth routes (register/login)
- Added requireWorkspaceAccess helper
- Added seedDefaultData for Personal workspace + welcome note
- Updated SSE endpoint for v2 entities + workspace_id filtering
- Created recordActivity helper (insert + pg_notify)
- Updated sidebar: Graph replaces Reports, removed Analytics
- Updated command palette for v2 entities
- Created AGENTS.md with locked contract
- Created llm-wiki scaffold (5 stubs)
- Added inline AGENT INSTRUCTION comments to all 50 API route files
- Fixed globals.css border-border class conflict
- Updated database.ts stub for v1 compatibility

llm-wiki/architecture.md

@@ -0,0 +1,42 @@
+# Architecture
+
+## System Overview
+
+Project E is a full-stack personal productivity OS with realtime collaboration, AI agent integration, and keyboard-driven UI.
+
+## Three-Layer Architecture
+
+```
+Frontend (Next.js React)  →  Next.js API Routes (business logic)  →  PostgreSQL (data store)
+         │                              │
+         │                              ├── NOTIFY (on write)
+         │                              │
+         └── SSE (EventSource) ←────────┘
+```
+
+## Data Flow
+
+1. User action → API route → Drizzle write → `pg.notify()` → SSE endpoint → Zustand store → UI update
+2. External agent → MCP tool call → API route → Drizzle write → `pg.notify()` → SSE → UI update
+3. Worker → webhook delivery / recurring spawn → API route → Drizzle write → `pg.notify()` → SSE → UI update
+
+## Container Layout
+
+- **project-e-web** — Next.js 15 (App Router), frontend + REST API + MCP + SSE
+- **project-e-db** — PostgreSQL 16, all data + LISTEN/NOTIFY
+- **project-e-worker** — Node.js worker, webhook delivery + recurring spawning + AI dispatch
+
+## Monorepo Structure
+
+```
+ProjectE/
+├── apps/
+│   ├── web/           # Next.js 15 app
+│   └── worker/        # Node.js worker process
+├── packages/
+│   ├── db/            # Drizzle schema + connection
+│   └── shared/        # Shared types, schemas, constants
+├── docker-compose.yml
+├── AGENTS.md
+└── llm-wiki/
+```