Introduce the Singularity Backend Foundation

Overview

User capability

Establish Fastify and TypeScript for APIs and business logic

User

The AeroSim delivery team

What the user can do

Establish Fastify and TypeScript for APIs and business logic

Why the user benefits

The capability becomes an explicit, testable project boundary.

User need

The delivery team needs the AeroSim solution to establish Fastify and TypeScript for APIs and business logic.

In scope

Establish Fastify and TypeScript for APIs and business logic

• StatusProposed
• OwnerAeroSim Scope (proposed; not accepted)
• Parent EpicAEROSIM-EP-1
• Depends onNone

Tasks

AEROSIM-TS-14Planning status: Done

Bootstrap the typed Singularity Fastify service

Singularity starts as a production-buildable Fastify service with strict TypeScript and typed request, response, and error boundaries.

• ComponentAPI Service — Fastify HTTP boundary
• Depends onNone
• RequirementsFR-0049, NFR-0007

AEROSIM-TS-15Planning status: Done

Implement Singularity liveness and readiness routes

The API exposes non-sensitive typed liveness and readiness endpoints suitable for Gondor probes.

• ComponentAPI Service — Health service
• Depends onAEROSIM-TS-14
• RequirementsFR-0049, NFR-0007

AEROSIM-TS-16Planning status: Done

Verify typed API input rejection

Automated API tests prove valid typed requests succeed and malformed or unsupported input is rejected through the normalized error boundary.

• ComponentAPI Service — HTTP contract test harness
• Depends onAEROSIM-TS-15
• RequirementsFR-0049, NFR-0007

Acceptance outcomes

1. 01

   Singularity starts a Fastify service with typed request and response boundaries.

2. 02

   Automated tests verify the service health route and rejection of invalid input.

Functional requirements and measurable criteria

FR-0049

Introduce the Singularity Backend Foundation

The system shall establish Fastify and TypeScript for APIs and business logic.

Acceptance 01

GivenAEROSIM-FT-42 is exercised within its governed scope under supported conditions

Whenthe primary capability path is completed

ThenSingularity starts a Fastify service with typed request and response boundaries

EvidenceFuture reviewed automated and browser evidence must verify this exact outcome against the current requirement.

Acceptance 02

GivenAEROSIM-FT-42 is exercised within its governed scope under supported conditions

Whenthe continuation or repeat path is completed

ThenAutomated tests verify the service health route and rejection of invalid input

EvidenceFuture reviewed automated and browser evidence must verify this exact outcome against the current requirement.

Non-functional requirements

• NFR-0007 — Engineering reproducibility and supply-chain integrity

  Repeated validation from the same immutable inputs produces equivalent artifacts and rejects unlicensed, untraceable, invalid, or over-budget inputs.

Risks

• Risk

  Partial introduction could leave an ungoverned or duplicated technical boundary.

Original source and prototype evidence

• discord: Engineering Features grounded in the selected AeroSim technology stack.
• discord: Engineering Feature decomposition continuation.
• discord: RootAtSkic directed publication of the agreed Scope update.

Prototype and discovery boundary

Existing implementation is discovery evidence only; it establishes no current approval, acceptance, or release state.