ragleap-graph v0.7.0

[0.7.0]

Added

• Real schema migration framework (ragleap_graph.migrations), implementing the proposal in docs/design/schema-migrations.md: a Migration base class (id, description, up(session), optional down(session), is_applied(session)), a MigrationRunner (discovers pending migrations, applies them in lexicographic id order, records each as a :_Migration node, fails loud and stops on the first error, supports dry_run=True and .status()), and both existing bespoke migrations (backfill_user_id_defaults(), backfill_composite_key()) registered as Migration0001_BackfillUserIdDefaults / Migration0002_BackfillCompositeKey in ALL_MIGRATIONS. Resolves the maintainer open questions in the design doc: migrations live in a new ragleap_graph/migrations/ subpackage; the runner logs a WARNING before applying (pointing at the backup docs) rather than silently proceeding; the existing backfill_*() bound methods are kept as-is (not deprecated) and now delegate to shared session-level helpers rather than duplicating logic; no concurrency guard/lock was added, matching the design doc's own "not proposed for v1" recommendation.
• Accepted docs/adr/0001-backup-restore-ownership.md (native neo4j-admin tooling, not a custom Python backup wrapper - consistent with ragleap-rag's existing approach to Postgres) and added a ## Operations section to README.md stating this plainly.

Changed

• Refactored backfill_user_id_defaults() and backfill_composite_key(): their core logic is now in new module-level _backfill_user_id_defaults_session() / _backfill_composite_key_session() functions that operate on an already-open session, so the migration framework can call the identical logic without duplicating it. Zero behavior change - both bound methods keep their existing signatures and return values; verified via the full existing test suite plus a live re-run of both methods against real Neo4j.

Verified

• 9 new offline tests covering MigrationRunner's logic (sort order, dry-run reports without executing, skips already-applied migrations, applies and records pending ones, stops on first failure without recording it, .status() reporting, down()'s default NotImplementedError, registry has unique sortable ids) using fake driver/session doubles - no live Neo4j required.
• 1 new live end-to-end test: real dry-run against live Neo4j correctly reports pending migrations, applying them creates real :_Migration tracking nodes, a second run is a correct no-op (idempotent), .status() reflects applied state - confirmed against real Neo4j, not mocked.
• Full suite: 98 passed, 4 skipped - zero regressions.