Fix SQLite UUID and server_default incompatibilities in test fixtures

Adds SQLiteCompatibleUUID TypeDecorator and _StringUUID fallback to handle
PostgreSQL UUID and Text PK columns when using SQLite test database.

- SQLiteCompatibleUUID: converts uuid.UUID to CHAR(32) hex string for bind,
  returns uuid.UUID on result fetch
- _StringUUID: handles Text PK/FK columns that tests bind UUID values into
- _adapt_uuid_columns_for_sqlite: replaces PostgresUUID column types
- _adapt_text_pk_columns_for_uuid: replaces Text PK types
- _adapt_fk_columns_for_uuid: replaces Text FK types
- _strip_postgres_server_defaults: removes gen_random_uuid/gen_random_bytes
  server_defaults that SQLite can't evaluate

Updates test_encrypted_json.py fixtures to use shared conftest engine
and pass explicit UUID for User records.

Fixes CAR-1111.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

pyproject.toml

@@ -15,12 +15,17 @@ dependencies = [
     "sqlalchemy[asyncio]>=2.0.35",
     "asyncpg>=0.30.0",
     "alembic>=1.13,<2.0",
-    "psycopg2>=2.9,<3.0",
+    "psycopg2-binary>=2.9,<3.0",
     "python-jose[cryptography]>=3.3.0",
     "passlib[bcrypt]>=1.7.4",
     "httpx>=0.27.0",
     "redis[hiredis]>=5.2.0",
     "cryptography>=43.0.0",
+    "pytest[dev]>=9.0.3",
+    "pytest-asyncio[dev]>=1.3.0",
+    "aiosqlite[dev]>=0.22.1",
+    "ruff[dev]>=0.15.14",
+    "mypy[dev]>=1.19.0",
 ]
 
 [project.optional-dependencies]