fix(api): give the error-samples payload mock its cutAttributeBytes - #1171

🟢 Confidence 5/5 · safe to merge
Test-only fixture fix; the schema requirement and the fallback byte counts both check out against the assertions in the same test.
_{quality 100/100 · no findings · tests covered · risk low}

Adds the missing cutAttributeBytes field to the error-samples payload mock in ai-sessions.http.test.ts, restoring the row decode that the new schema requires. One-line test-fixture fix, safe to merge.

• ai-sessions.http.test.ts payload mock row now carries cutAttributeBytes: {}

_{6eecaf0 · Updated on every push. Reply "won't fix" to dismiss a finding, or mention @maple-review-bot to ask about one.}