Update CLAUDE.md with project architecture and patterns

CLAUDE.md

@@ -1,34 +1,92 @@
-# AI Integration Debugging Guide
+# CLAUDE.md
 
-## Problem: "Invalid model name"
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Commands
 
 ```bash
-# Check available models
-curl -s "https://llm.manohargupta.com/v1/models" \
-  -H "Authorization: Bearer sk-tiger-gateway-..."
+# Development
+pnpm dev          # Start dev server at http://localhost:3000
+pnpm build        # Production build
+pnpm start        # Start production server
+
+# Database (drizzle)
+pnpm db:push      # Push schema to database
+pnpm db:generate  # Generate drizzle types
+pnpm db:studio   # Open DB studio (or use direct SQL)
+
+# Docker
+docker-compose -f docker-compose.dev.yml up -d    # Start local Postgres
 ```
 
-Use model name from response: `minimax-2.7` (not `tiger-minimax`)
+**Note:** Running from `/Users/manohar_air/MyProjects/Tia/tia` directory.
 
-## Problem: Empty response
+## Architecture
 
-Add debug logging and check server health:
-```bash
-curl -s "https://llm.manohargupta.com/health"
+### Tech Stack
+
+- **Framework:** Next.js 16 with App Router (src/app/)
+- **Database:** PostgreSQL 16 with pgvector + Drizzle ORM
+- **Auth:** NextAuth v5 (beta) with magic links
+- **AI:** LiteLLM gateway → MiniMax model (minimax-2.7)
+- **Storage:** Cloudflare R2 for media uploads
+- **Styling:** Tailwind CSS v4
+
+### Project Structure
+
+```
+src/
+├── app/                    # Next.js App Router pages
+│   ├── api/               # API routes (auth, logs, ai, growth, etc.)
+│   ├── page.tsx            # Home (Quick Log + AI card)
+│   ├── ai/               # AI chat page with sidebar
+│   ├── medical/           # Vaccination tracking
+│   ├── growth/           # Growth charts
+│   ├── memories/         # Photo gallery
+│   ├── menu/            # Navigation menu
+│   ├── onboarding/      # First-time setup
+│   └── login/           # Magic link login
+├── libs/                  # Shared utilities (if any)
+└── styles/               # Global styles
+drizzle/                  # Database migrations
+docs/                     # Design docs
 ```
 
-## Problem: Network errors
+### Database
 
-- Use full domain: `https://llm.manohargupta.com` (not internal hostname)
-- Add `https://` prefix
+- **Migrations:** SQL files in `drizzle/` (not using drizzle-kit push)
+- **Apply:** `psql` directly or via docker-compose exec
+- **RLS:** Row-level security for multi-family isolation
 
-## Test Script
+### Data Models
 
-```bash
-curl -s -X POST "https://llm.manohargupta.com/v1/chat/completions" \
-  -H "Content-Type: application/json" \
-  -H "Authorization: Bearer sk-tiger-gateway-YOUR_KEY" \
-  -d '{"model":"minimax-2.7","messages":[{"role":"user","content":"hi"}]}'
-```
+- **Family:** Parent account container
+- **Members:** Adults in family (mom, dad, etc.)
+- **Children:** Baby profiles with birth date
+- **Logs:** Feed, sleep, diaper entries with timestamps
+- **Vaccinations:** IAP schedule tracking
+- **Growth:** Weight/height over time
+- **Memories:** Photos with vision AI tags
 
-See `/docs/debugging.md` for full guide.
+### Key Patterns
+
+**Offline Queue:** Uses localStorage (`tia_offline_queue`) for failed API calls, retries when online.
+
+**Chat Sessions:** Stored in localStorage (`tia_chat_sessions`) as array of sessions with messages. Shared between home page AI card and /ai page.
+
+**API Routes:** Return standard JSON `{ entries: [...] }` format for lists.
+
+**AI Integration:**
+
+- Route: `/api/ai` → LiteLLM at `https://llm.manohargupta.com`
+- Model: `minimax-2.7`
+- See `/docs/debugging.md` for troubleshooting
+
+## Environment Variables
+
+See `.env.example` for all required vars. Key ones:
+
+- `DATABASE_URL` - PostgreSQL connection
+- `AUTH_SECRET` - NextAuth secret
+- `LITELLM_BASE_URL` - AI gateway URL
+- `LITELLM_API_KEY` - AI API key