weichen 093b86fe7e Add the storage-migrate tool: inventory, backup, and identity-governed migration (U4) ...

Why: plan U4/R7 - the SQLite-to-PostgreSQL path needs a managed entry that never replays SQLite dumps as PG SQL, fixes migration identity against a frozen snapshot, refuses foreign or non-empty targets, verifies per-table counts and ordered checksums, and keeps secrets out of reports (KTD14).

Evidence: integration tests against real PostgreSQL green twice (end-to-end with bool/NULL/Unicode/BLOB/sequence assertions, idempotent rerun, interrupted-table resume, foreign-data and wrong-snapshot refusals, unknown-owner block); SQLite unit tests for inventory/backup/coverage; full backend suite green on both tiers.

Impact: new cmd/storage-migrate binary (make build now emits bin/storage-migrate); store gains a DB() accessor documented for ops tooling; no server or runtime behavior change.

Refs: proposals/2026-10-11-collaboration-storage-and-distribution.md U4 and section 6; docs/guides/team-storage.md section 10.

2026-10-11 08:30:01 +00:00

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