Product architecture

From counter to record — one isolated, auditable stream.

ChronoCare Pro routes every watch through a deterministic pipeline. Each shop's data is sealed per subdomain. The milestone engine fires events that compose into the permanent Digital Service Record on completion.

Core flow

step.1

Intake

Job docket, photos, quote

step.2

Diagnose

Bench notes, parts list

step.3

In service

Timing, lubrication, reassembly

step.4

Ready

DSR draft generated

step.5

Collected

Payment + DSR sealed

Tenant isolation

Every request is scoped to a tenant resolved from subdomain. Database queries are partitioned by tenant_id with row-level enforcement. No shared query path exists.

request → resolveTenant(subdomain)
       ↓
middleware.attachTenantId(req)
       ↓
db.query.where({ tenant_id })  // enforced
       ↓
response (tenant-scoped)

Milestone engine

A state machine governs allowed transitions. Every change emits an event consumed by the messaging, notification and DSR builders.

received → diagnosed

diagnosed → in_service

in_service → ready

ready → collected (triggers dsr.issue)

Data model

Tenant

· id
· subdomain
· name
· plan
· branding

User

· id
· tenant_id
· role
· email
· name

Client

· id
· tenant_id
· name
· phone
· email

Job

· id
· tenant_id
· client_id
· watch_id
· status
· quote

Watch

· id
· brand
· model
· ref
· serial
· calibre

ServiceLog

· id
· job_id
· parts[]
· lubricants[]
· timing[]

DSR

· id
· job_id
· qr
· issued_at
· pdf_url

Message

· id
· job_id
· sender_id
· text
· at

Payment

· id
· job_id
· amount
· method
· stripe_id

iOS companion

Native client subscribes to job events via WebSocket. Push notifications dispatched via APNs on milestone change.

Messaging

Threaded per job. Watchmaker ↔ client. Photos inline. Optimistic UI with server reconciliation.

Reports engine

Materialised views recomputed nightly; deltas exposed under /api/reports for shop owner dashboards.

Stack

Edge runtime

Cloudflare Workers

API

TanStack Start · tRPC

Database

Postgres · RLS

Auth

Magic links · WebAuthn

Payments

Stripe Billing · Connect

Storage

R2 (photos · DSR PDFs)

Realtime

Durable Objects

iOS

SwiftUI · APNs · Combine