Awesome Reviewers

When fields/items are optional, treat nil/empty as a first-class state: guard against nil dereferences, sanitize outputs, and never overwrite meaningful non-nil data with nil.

Apply:

• Nil-aware assignment: only assign optional pointers/values when they are non-nil (avoid forcing XContent = nil).
• Defensive branching: when logic depends on “completion”, don’t assume related payload fields are non-empty; keep/introduce fallbacks for len(...)==0.
• Output sanitization: filter nil/empty stream elements so downstream consumers see only valid items.
• Normalize optional inputs: if a downstream expects a non-pointer, convert/normalize with explicit nil checks rather than unsafe deref.

Example:

// Nil-aware mapping: don’t overwrite with nil
if len(m.ReasoningDetails) > 0 {
    // ... build from details ...
} else if m.Reasoning != nil {
    m.ReasoningContent = m.Reasoning
}

// Defensive fallback for empty payload
if len(responseBody) > 0 {
    persistAggregatedResponse(ctx, responseBody, meta)
} else {
    // aggregated “completed” doesn’t guarantee responseBody presence
    persistResponseChunks(ctx)
}

// Stream sanitization: filter nil items
for _, item := range items {
    if item == nil {
        continue
    }
    emit(item)
}

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