CLAUDE.md: Require Explicit Null Handling at Every Boundary
System config that forces Claude to surface and handle null/undefined at every IO and module boundary.
The Prompt
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CLAUDE.md: Enforce Explicit Null Handling Before Property Access
Configure Claude Code to reject any code that accesses object properties without first asserting the value exists.
Claude Code: Find the Module Boundary That Doesn't Exist Yet
Surfaces the seam your codebase is begging for by analyzing import patterns and responsibility leakage.
CLAUDE.md: Require a Rollback Path Before Any Schema Change
Stops Claude from generating database migrations without a tested, explicit rollback strategy attached.
CLAUDE.md: Enforce Explicit State Machine Transitions
Configure Claude Code to reject implicit state changes and require documented transition guards on every state-bearing object.