chore(refactor): snapshot test baseline + no-regression gate truoc refactor open-sse

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/__baseline__/baseline-results.json

@@ -0,0 +1 @@
+{"numTotalTestSuites":209,"numPassedTestSuites":192,"numFailedTestSuites":17,"numPendingTestSuites":0,"numTotalTests":674,"numPassedTests":628,"numFailedTests":26,"numPendingTests":20,"numTodoTests":0,"snapshot":{"added":0,"failure":false,"filesAdded":0,"filesRemoved":0,"filesRemovedList":[],"filesUnmatched":0,"filesUpdated":0,"matched":0,"total":0,"unchecked":0,"uncheckedKeysByFile":[],"unmatched":0,"updated":0,"didUpdate":false},"startTime":1781341952244,"success":false,"testResults":[{"asserLine truncated