Fix scenario numbering mismatch in checkBlockingConditions

[Copilot]

The inline scenario labels (Scenario 2, Scenario 3) inside checkBlockingConditions were off by one relative to the JSDoc block comment, which enumerated exactly two blocking scenarios (1–2).

Change

Renumbered the inline labels to match the JSDoc:

// Before
// Scenario 2: Command failures always block
// Scenario 3: Validation errors block unless acknowledged

// After
// Scenario 1: Command failures always block
// Scenario 2: Validation errors block unless acknowledged

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