Opening the Documentation section against a database that already had a
`documents` table failed with `no such column: documents.edited_at`.
`Base.metadata.create_all` creates a table that is missing; it never adds a
column to one that is already there. `edited_at` landed after the table had
been created on a machine running the branch, so that database kept the older
shape and every query naming the column failed — including the one behind the
section's first request.
The repo convention is that column additions go through `_try_migrate`, and the
documents tables were the one place leaning on `create_all` for more than the
initial CREATE. Every nullable or defaulted column is now restated in
DOCUMENT_DDL as an idempotent ALTER, the way the `device_inventory` migrations
are, so an existing table is brought up to the current shape at boot whatever
shape it starts from.
The test fixture applied the same DDL with a raw `exec_driver_sql`, which was
fine for pure CREATE statements but turns each of those ALTERs into a fatal
"duplicate column" on the fresh database create_all has just built. It goes
through `_try_migrate` too now — which is what its own comment already claimed
it did.
ha-relevant: no