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Garry TanandClaude Opus 4.7
61886f9086
Extends test/helpers/schema-diff.ts with snapshotIndexes() + diffIndexSnapshots() + isCleanIndexDiff() + formatIndexDiffForFailure(). Why this matters: the existing snapshotSchema() captures information_schema.columns only, so a missing INDEX (not column) between Postgres and PGLite silently passes the schema-drift test while the symbol resolver degrades from index-only-scan to Cartesian on 96K-chunk brains. The v0.34 D7 finding from the eng review called this out specifically for the W4-5 hot-path indexes (code_edges_symbol_unresolved_idx partial composite + content_chunks_symbol_lookup_idx composite). Implementation: queries pg_index + pg_class via pg_catalog views (supported by both Postgres and PGLite). Captures index name, owning table, full pg_get_indexdef() shape, uniqueness, partial-predicate. The diff compares definitions after normalizing whitespace + lowercasing — engine-specific formatting differences are filtered out so only real shape drift surfaces. Reused by future test/e2e/schema-drift.test.ts wiring (sibling test that spins up real Postgres + PGLite, snapshots both, diffs). test/helpers/schema-diff-indexes.test.ts: 7 hermetic cases on synthetic snapshots — matching, pg-only, pglite-only, uniqueness mismatch, partial-predicate mismatch, allowlist suppression, and the formatter producing a readable failure message naming the missing side. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>