* feat: add created_by_user property and meta data to Stream entity

* chore: cast to string

* test: update test cases

* chore: rename table var

* fix: use object type to check Stream assoc

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* test: fix tests

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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>