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* fix(engine): make the v1→v2 manifest migration idempotent under Lance 7's immutable unenforced primary key Lance 7 (dataset/transaction.rs) makes the unenforced primary key immutable once set: any write touching the reserved `lance-schema:unenforced-primary-key` field metadata after the PK is set errors "cannot be changed once set" — even re-applying the same value. `migrate_v1_to_v2` previously relied on the old Lance 6 idempotency (re-applying the annotation was a no-op-ish bump), which it needs for crash-recovery: a v1 graph that crashes after the field-set but before the stamp bump re-enters the migration with the PK already present. Under Lance 7 that re-entry now errors, so a real pre-v0.4.0 graph crashing in that window could never complete its migration. Guard the field-set with `schema().unenforced_primary_key().is_empty()` so a genuine first-set still runs but a re-set is skipped — restoring crash-idempotency by construction. (Fresh graphs bake the PK into manifest_schema() at init and never run this migration.) The existing test_publish_migrates_pre_stamp_manifest_to_current_version is the regression guard: red under Lance 7 before this change, green after. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * test(engine): realign the native-namespace surface guard to Lance 7 (TableNotFound) `test_directory_namespace_direct_publish_cannot_replace_native_omnigraph_write_path` pokes Lance's NATIVE DirectoryNamespace (not omnigraph's production write path, which is the manifest merge_insert publisher) to document that it cannot replace omnigraph's authority. Lance 7's DirectoryNamespace routes list/describe/create_table_version through `check_table_status`, which now reports an omnigraph-manifest-tracked table as absent — so all three return TableNotFound for `node:Person` (observed). The native namespace is now fully decoupled from omnigraph's manifest: it cannot enumerate, inspect, or publish over omnigraph's tables. This strengthens the guard's thesis. Realigned the assertions to the v7 behavior and kept the authority check (omnigraph's refresh ignores the direct append; row_count stays 0). Test-only; no production impact. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * docs(lance): document the 2 runtime behavior changes in the 7.0.0 alignment stanza The #229 stanza verified a clean engine *build* but not the test suite, and claimed "no Lance API surface omnigraph uses changed." Two runtime behaviors did, caught only by the full test suite: - the unenforced primary key is immutable once set in v7 (transaction.rs) — broke the v1→v2 manifest migration's crash-idempotency; fixed by an is-set guard; - the native DirectoryNamespace returns TableNotFound for omnigraph manifest-tracked tables (dir.rs) — test-only; the surface guard was realigned. Corrects the over-broad "no surface changed" claim, adds both findings, and notes the lesson: a clean build is not a clean alignment — run cargo test --workspace before declaring a Lance bump done. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com> |
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