Eight docker-gated tests covering the write + full-codex
round-trip against the real .graph.pkl fixture:
* Build a Neo4jGraph from the real codex (smoke test).
* Entity count matches in-memory (corrected for the
LoreSource-as-subject edge case).
* Relation count matches in-memory.
* LoreSource count matches in-memory.
* was_true_at Roland / House Raventhorne / 3rd_age.year_345
— both backends agree.
* was_true_at Aldric / Maric sibling query.
* was_true_at Voldramir / Mardonus PART_OF query.
* Add a new edge via the Neo4j backend and verify
was_true_at against Neo4j sees it (write/read
round-trip in the same process).
The mirror helper (_mirror_in_memory_to_neo4j) pre-passes
LoreSource nodes (full metadata) and bare registered names
(entities that don't participate in any edge) so the Neo4j
backed is observationally equal to the in-memory graph
for the full codex.
Suite: 611 -> 619 passed (+8 full-codex tests, all 559
baseline + 27 Neo4j tests preserved).
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