// Phase 92 P4-1: Minimal E2E test for ConditionalStep support
//
// This test verifies that ConditionalStep (conditional carrier increment)
// works correctly in Pattern2 with break conditions.
//
// Pattern: Simple conditional increment based on loop variable
// Expected output: 3
//
// Why 3?
// - i=0: flag==0, so i becomes 1
// - i=1: flag==0, so i becomes 2
// - i=2: flag==0, so i becomes 3
// - i=3: break condition triggers
//
// Phase 92 scope: This test does NOT use body-local variables in conditions
// to avoid body-local promotion issues (which are outside Phase 92 scope).

static box Main {
    main() {
        local i = 0
        local flag = 0  // Condition variable (not body-local)

        loop(i < 10) {
            // Break condition (uses loop variable only)
            if i == 3 {
                break
            }

            // Conditional increment (ConditionalStep pattern)
            // Note: In real P5b patterns, this would be: if ch == '\\' { i = i + 2 } else { i = i + 1 }
            // But we use flag to avoid body-local promotion issues
            if flag == 1 {
                i = i + 2
            } else {
                i = i + 1
            }
        }

        print(i)
        return 0
    }
}