It read "The API key is intentionally not required. Some OpenAI-compatible APIs
do not require a key", while validate_config.yml fails when the key is empty and
the provider is enabled. Enabling the provider against a keyless endpoint stopped
with "You need to define a required configuration setting".

baibot is the authority here, and it agrees with the validation rather than the
comment: `openai::Config` takes `api_key: String`, whereas the provider whose key
really is optional is a different one, `openai_compat`, with
`api_key: Option<String>`. So the comment described a real baibot feature, just
not this provider's.

The validation stays as it is; the comment now says what the code does, and
points at the provider the keyless case belongs to.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SEH3vxYSQ5SV4N5z61eyGT

The image tag prefixed `ig-` when `..._meta_mode` was `instagram`, but this role
does not accept that mode any more: `..._database_suffix` and
`..._bridge_username_prefix` map only `facebook`, `facebook-tor` and `messenger`,
so `instagram` raises an undefined-key error long before the tag is rendered.

Instagram has been a separate bridge since v26.07 and is handled by
matrix-bridge-mautrix-meta-instagram, which hardcodes the prefix. Left over from
before that split.

The comment stays, reworded: both bridges still share a container image
repository, so an `ig-` prefix on a tag here would mean this role had pulled the
other bridge's image - which is what the Molecule scenario asserts against.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SEH3vxYSQ5SV4N5z61eyGT

The annotation read `depName=depName=ghcr.io/...`, so Renovate looked up a
package literally named `depName=ghcr.io/the-draupnir-project/draupnir` and found
nothing. Both Draupnir roles have been invisible to Renovate since v3.0.0 landed
in April, and the dependency dashboard has been reporting it as a repository
problem the whole time:

  Failed to look up docker package
  depName=ghcr.io/the-draupnir-project/draupnir: no-result

Checked every other annotation under roles/custom/ for the same shape; these two
were the only ones.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SEH3vxYSQ5SV4N5z61eyGT

`group_vars/matrix_servers` selects postgres whenever postgres is enabled, which
is the default, so postgres is what essentially every deployment runs. The
scenarios were testing sqlite - a path almost nobody is on.

How little that path is used is not a guess: the mautrix-meta bridges could not
start at all under sqlite, and nobody reported it. Testing the engine users are
actually on is worth more than keeping coverage of the one they are not, so no
scenario is left behind on sqlite.

Four of the eight scenarios have a database and are converted; the other four
have none and are untouched.

molecule-shared/tasks/postgres.yml stands Postgres up on the scenario's network,
with the data directory on a tmpfs since it is thrown away with the container.
The image is pinned at the major the postgres role deploys to new installations
and left to Renovate: when a new major lands, the PR bumping that pin runs every
scenario against it, which is the earliest warning we get that a component does
not cope.

Each scenario gives its database and user names that differ from the role's
defaults, so the component reaching the database proves the role built its
connection string out of them. The assertions moved from "a file appeared at the
path we configured" to "these tables exist", which is strictly stronger: tables
can only appear once the component has resolved the hostname, authenticated with
the credentials the role rendered, and run its migrations to completion.

Costs about 10 seconds per affected scenario (115s to 125s locally for
mautrix-whatsapp), on jobs that run in parallel.

Gotcha worth recording: since Postgres 18 the image puts PGDATA in a versioned
subdirectory and refuses to start if it finds a mount at the old
/var/lib/postgresql/data, so the tmpfs is mounted at /var/lib/postgresql.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SEH3vxYSQ5SV4N5z61eyGT