005 impl no implementation

✓ Passing This code compiles and runs correctly.

Code

// Test 430_005: Abstract with No Implementation (Error Case)
// When an abstract event has NEITHER default NOR override,
// invoking it should be a compiler error.

// Define abstract event with NO implementation at all
~[abstract] event unimplemented { x: i32 }
| done

// Try to invoke it - THIS SHOULD BE A COMPILER ERROR
~unimplemented(x: 42)
| done |> _
input.kz

Error Verification

Expected Error Pattern

Abstract event with no implementation should cause runtime error when invoked.
Currently marked as compile-only test.

Actual Compiler Output

🎯 Compiler coordination: Passes: 13 (flow-based: frontend, analysis, emission)

Test Configuration

MUST_FAIL