Builds on the partial bd6b137 fix (which only stripped server_default
expressions) by also:
- Add _StringUUID TypeDecorator: lets Text/String/UUID columns accept
uuid.UUID values on bind (SQLite has no native UUID type) and returns
uuid.UUID on read so existing test assertions like
isinstance(store.id, uuid.UUID) still pass.
- Replace UUID column types with _StringUUID before create_all so
CREATE TABLE uses CHAR(36) instead of the native UUID type that
SQLite can't bind.
- Extend before_insert listener to also set Text PK columns (User.id)
and func.now()-stripped columns (ingested_at) to Python-side defaults
so INSERTs without explicit values succeed under SQLite.
- Switch _create_test_user_and_session to use 32-char hex user/session
ids so they match the format bound by the TypeDecorator on FK reads.
- Simplify test_encrypted_json.py to use the shared engine/session
fixtures from conftest instead of duplicating its own broken engine.
Tests passing: tests/test_models.py (14), tests/test_encrypted_json.py (6).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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