Alchm Kitchen

Bun Next.js React TypeScript Railway Vercel

The world's first astrological meal-planning system. Alchm.kitchen bridges ancient alchemical wisdom with modern AI to deliver personalized food recommendations based on natal charts, live planetary positions, elemental harmony, and thermodynamic resonance.

Production: alchm.kitchen

---

What's new in 3.1 — MCP release

• MCP server: a Bun-powered Model Context Protocol tool surface — connect Claude Desktop / Cursor / Cline, mint a per-user API key at /profile/api-keys, and buy ESMS top-ups via Stripe. Tier-aware per-key rate limiting + full telemetry.
• Operational admin console at /admin: per-flow system status, live activity stream, onboarding funnel watch, today's highlights, and API-route health — all from existing signals, each panel degrading independently. Hourly health snapshots + Slack/email/DB alerting, plus 5 synthetic probes.
• Tracked, auto-applied migrations: a _migrations table + scripts/migrate.ts run on every Railway deploy, closing the schema-drift gap that caused prior signup/dashboard outages.
• Production-readiness hardening: PgBouncer transaction-mode compatibility (ADR-007), internal-URL centralization (src/lib/serviceUrls.ts), and DB/calc/security guards.
• Calc observability: a degraded flag surfaces silent astronomy fallbacks and degenerate calculations on /quantities instead of letting them masquerade as live data.

See CHANGELOG.md for the full 3.1 detail.

---

What's new in 3.0 — The Modern Alchemist

• New navigation IA: 5-slot primary nav (Kitchen / Discover / Plan / Commensal / Lab) with mega-menus and ⌘K Command Palette
• New auth flows: AuthHandshake 6-step checklist, WelcomeBack, two-tier UpgradeGate, device session management
• Dark alchm chrome: all app-surface pages now live inside the (alchm) route group with the dark #07060B shell
• MenuPlannerContext split: 2182-line monolith → 5 focused modules in src/contexts/menu-planner/
• Onboarding skip: "Skip for now" CTA with ?prompt=natal soft-prompt banner
• Vercel Analytics funnel events: CommandPalette, UpgradeGate, AuthHandshake tracked
• Production bug fix: _aspects array no longer contaminates planet positions dict (three-layer defense)

See CHANGELOG.md for the full history.

---

Tech stack

Layer	Technology
Frontend	Next.js 15 (App Router), React 19, Tailwind CSS, Framer Motion
Toolchain	Bun 1.3.13 (package manager + runtime)
Backend	Python FastAPI + pyswisseph (Swiss Ephemeris) on Railway
Database	PostgreSQL on Railway (internal: postgres.railway.internal)
Auth	NextAuth.js v5 (Auth.js) — Google OAuth, JWT, device sessions
Payments	Stripe (checkout + webhook)
Email	Resend
Analytics	Vercel Analytics + OpenTelemetry
Frontend hosting	Vercel (alchm-kitchen-pro project)
Backend hosting	Railway

---

Quick start

Requirement: Bun 1.3.13+. Never use npm or yarn in this repo.

# 1. Clone
git clone https://github.com/gregcastro23/WhatToEatNext.git
cd WhatToEatNext

# 2. Install (fast — Bun lockfile committed)
bun install

# 3. Copy env template and fill in values
cp .env.example .env.local

# 4. Start dev server
bun run dev
# → http://localhost:3000

# 5. Run tests
bun run test

# 6. Build for production (must pass before every PR)
bun run build

# 7. Lint (must be zero warnings)
bun run lint

---

Project structure

src/
├── app/                         # Next.js App Router pages
│   ├── (alchm)/                 # Dark-shell app pages (auth-gated)
│   │   ├── layout.tsx           # Dark #07060B chrome, hides public header
│   │   ├── page.tsx             # Home feed (/)
│   │   ├── lab/                 # /lab — Alchemical Laboratory
│   │   ├── ingredients/[id]/    # /ingredients/:id — ingredient detail
│   │   ├── profile/             # /profile/* — all profile sub-pages
│   │   ├── commensal/           # /commensal — group recommendations
│   │   ├── feed/                # /feed — activity feed
│   │   ├── birth-chart/         # /birth-chart
│   │   ├── current-chart/       # /current-chart
│   │   ├── recipe-generator/    # /recipe-generator
│   │   ├── planetary-chart/     # /planetary-chart
│   │   ├── restaurant-creator/  # /restaurant-creator
│   │   ├── cosmic-recipe/       # /cosmic-recipe
│   │   ├── generated-recipe/    # /generated-recipe + /generated-recipe/[id]
│   │   └── food-tracking/       # /food-tracking
│   ├── api/                     # API route handlers
│   ├── login/                   # /login (chromeless)
│   ├── upgrade/                 # /upgrade (chromeless)
│   ├── onboarding/              # /onboarding (chromeless)
│   ├── auth/                    # /auth/* — NextAuth callbacks + establishing
│   ├── premium/                 # /premium — marketing pricing page
│   └── layout.tsx               # Root layout: RedesignedHeader + AppChrome
│
├── components/
│   ├── nav/
│   │   ├── AppChrome.tsx        # AppChromeFooter + AppChromeTabBar gates
│   │   ├── CommandPalette.tsx   # ⌘K global palette
│   │   ├── RedesignedHeader.tsx # 5-slot primary nav with mega-menus
│   │   ├── MobileGlassTabBar.tsx
│   │   └── RedesignedFooter.tsx
│   └── auth/
│       └── AuthFollowups.tsx    # AuthHandshake, WelcomeBack, UpgradeGate, AccountSessions
│
├── config/
│   └── navigation.ts            # NAV_IA — single source of truth for all nav surfaces
│
├── contexts/
│   ├── MenuPlannerContext.tsx   # Barrel re-export (28 lines)
│   └── menu-planner/            # Split modules
│       ├── types.ts             # All interfaces (244 lines)
│       ├── useMealSlots.ts      # Slot CRUD hook (498 lines)
│       ├── useWeekNavigation.ts # Week cursor hook (65 lines)
│       └── MenuPlannerProvider.tsx # Composes above (1280 lines)
│
├── lib/
│   ├── auth/
│   │   ├── auth.ts              # NextAuth v5 full config (Node.js runtime)
│   │   └── auth.config.ts       # Edge-safe auth config (middleware)
│   ├── validation/
│   │   └── railway.ts           # Zod schemas for Railway API responses
│   └── rateLimit.ts             # Sliding-window rate limiter
│
├── services/
│   ├── subscriptionService.ts   # Tier management, feature gates
│   ├── TokenEconomyService.ts   # Spirit/Essence/Matter/Substance economy
│   ├── HistoricalStatsService.ts
│   └── ...
│
├── types/
│   ├── subscription.ts          # TIER_LIMITS, SubscriptionTier
│   └── next-auth.d.ts           # JWT augmentation (sessionId, deviceSessionId)
│
└── database/
    └── init/                    # SQL migrations (01 – 33)
        └── 33-device-sessions.sql

---

Environment variables

Copy .env.example to .env.local and fill in values. All secrets are in Vercel (frontend) and Railway (backend).

# Database (Railway internal — used in production, not local dev)
DATABASE_URL=postgresql://postgres:<pw>@postgres.railway.internal:5432/railway

# Auth
AUTH_SECRET=<32-char-random>
AUTH_GOOGLE_ID=<google-oauth-client-id>
AUTH_GOOGLE_SECRET=<google-oauth-client-secret>
AUTH_ADMIN_EMAIL=<your-email>
AUTH_URL=https://alchm.kitchen        # production
AUTH_TRUST_HOST=true

# APIs
API_BASE_URL=https://whattoeatnext-production.up.railway.app
NEXT_PUBLIC_BACKEND_URL=https://whattoeatnext-production.up.railway.app
INTERNAL_API_SECRET=<shared-secret-with-fastapi>
GALILEO_API_KEY=<galileo-key>

# Payments & Email
STRIPE_SECRET_KEY=sk_live_...
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=pk_live_...
RESEND_API_KEY=re_...

---

Key architecture decisions

See docs/adr/ for full Architecture Decision Records.

ADR	Decision
ADR-001	5-slot primary nav IA
ADR-002	Two-tier pricing (Apprentice / Alchemist)
ADR-003	Token economy as the primary AI throttle
ADR-004	Device sessions via DB + JWT jti
ADR-005	Denormalized read_model JSONB for sub-100ms recipe loads

---

Deployment

Frontend (Vercel)

Automatic on merge to master. Project: alchm-kitchen-pro, team: cookingwithcastro-llc.

# Manual deploy (if needed)
vercel --prod

Backend (Railway)

Auto-deploys from master if Railway is connected. Manual:

cd backend
railway login
railway up

Database migrations

Migrations live in database/init/. Apply in sequence (01 → 33). Railway runs them on first boot via the db_init.py script.

---

Scripts

bun run dev          # Start dev server (localhost:3000)
bun run build        # Production build (must pass before PR)
bun run lint         # ESLint (must be zero warnings)
bun run typecheck    # TypeScript typecheck
bun run test         # Jest unit tests
bun run storybook    # Component dev (dev only, excluded from prod build)

---

Contributing

See CONTRIBUTING.md. Branch off master; never target main (stale). Always use Bun.

---

License

MIT — see LICENSE.

alchm.kitchen 🌙