HighFile-scopeC# Plug & play

Use dependency injection over direct instantiation

Request dependencies via constructors and register them with the DI container; avoid new-ing services in code.

Why this matters

Enables testing, configuration, and lifecycle management.

Side-by-side examples engineers can pattern-match during review.

Avoid

var svc = new PaymentService();

Prefer

public OrdersController(IPaymentService payments){ _payments = payments; }

Bad

var repo = new Repo()

Good

public Controller(IRepo repo)

From the same buckets as this rule.

Critical
Require an ADR for any architectural or cross-team decision
For changes that affect architecture, data models, external APIs, security posture, deployment topology, or cost (>10%), create an ADR in docs/adr/ using the standard template (Context, Decision, Consequences) and link the PR and issue IDs.
docs-adrsmodule-architecture+1
Critical
Use Factory Method Injection in `@Configuration` Classes
Ensure that factory method injection is used in `@Configuration` classes instead of `@Autowired` field injection.
module-architecturestyle-conventions
High
A module should not import itself
Identify cases where a module imports itself. Self-imports are usually unintentional and can cause confusion or unnecessary dependencies. Suggest removing them.
module-architecture