This enforces the Apex quality gates that keep code out of deployment hell: no SOQL or DML in loops, explicit sharing declarations on every class, CRUD/FLS checks before queries, SOQL injection prevention, and the PNB test pattern (Positive, Negative, Bulk with 200+ records). It's built for code review moments when you need to catch governor limit traps and security gaps before they hit production. The idiom upgrades are nice (safe navigation, nullish coalescing, modern Assert syntax), but the real value is having the bulk-safety and sharing model rules applied consistently. If you're writing trigger handlers, batch jobs, or reviewing PRs on a Salesforce team, this catches the expensive mistakes that only surface under load.
npx skills add https://github.com/github/awesome-copilot --skill salesforce-apex-quality