Replace removed docassemble.webapp.db_object import for docassemble 1.10.0

[nonprofittechy]

Summary

docassemble/AssemblyLine/sessions.py imports a private docassemble webapp helper that no longer exists in docassemble 1.10.0:

from docassemble.webapp.db_object import init_sqlalchemy
...
db = init_sqlalchemy()

In current jhpyle/docassemble 1.10.0, docassemble.webapp.db_object is gone. The replacement low-level DB access helpers appear to live in docassemble.webapp.db, which exposes get_session() and session_scope() context managers.

Why this breaks

This is an import-time failure: any code path that imports docassemble.AssemblyLine.sessions under docassemble 1.10.0 will fail with something like:

ModuleNotFoundError: No module named 'docassemble.webapp.db_object'

The affected functions then use db.connect() to run raw SQL queries in:

• get_saved_interview_list()
• find_matching_sessions()
• delete_interview_sessions()

Proposed fix

Replace the old private engine initialization with the 1.10.0 DB session helpers:

from docassemble.webapp.db import get_session, session_scope

Then update the raw SQL call sites roughly as follows:

# SELECT-style queries
with get_session() as session:
    rs = session.execute(get_sessions_query, parameters)
    for row in rs:
        sessions.append(dict(row._mapping))

# DELETE / write-style queries
with session_scope() as session:
    session.execute(delete_sessions_query, parameters)

This keeps the existing SQL mostly intact while avoiding the removed init_sqlalchemy() helper.

Test suggestion

Add a simple import smoke test against docassemble 1.10.0:

python - <<'PY'
import docassemble.AssemblyLine.sessions
PY

A more complete regression test should exercise the three affected session-list/session-delete functions inside a docassemble app/database context.

Notes

This is probably a relatively small code change, but it should be tested with a real initialized docassemble 1.10.0 database context because it changes from using a raw SQLAlchemy engine connection to docassemble's current session helpers.