The #18 user-delete bug was the first symptom of a broader gap: 13 tables
reference workspaces(id) (and activity_log also organizations(id)) with NO
ACTION, so deleting a workspace or organization fails the same FK wall once it
holds any content. SQLite can't ALTER an FK action, so this migration rebuilds
each table (the create-copy-rename pattern the assignments/schedules migrations
already use), changing only the tenant FK clause:
workspace_id -> ON DELETE CASCADE (resources belong to the workspace)
activity_log.workspace_id / organization_id -> ON DELETE SET NULL (keep audit)
user_id FKs are intentionally left as-is - user deletion stays handled app-side
by lib/user-deletion.js (the #18 fix).
- lib/tenant-cascade-migration.js: pure, idempotent core (table-existence
guarded; transforms the stored CREATE text, copies rows verbatim, recreates
indexes; fixes activity_log's AUTOINCREMENT sequence; baseline-vs-after
foreign_key_check so pre-existing orphan rows don't abort it but a botched
rebuild does).
- db/database.js: boot wrapper owns the pre-migration snapshot + process.exit
on failure, matching the other heavy migrations.
Tests (node:test): reproduces the workspace-delete FK failure, applies the
migration, verifies FK actions (CASCADE / SET NULL), index recreation, data
preserved, and that workspace/org delete now cascades (activity_log preserved).
Full suite 27/27. Verified on a copy of a real DB: 13 tables rebuilt,
integrity_check ok, workspace delete cascades, no new FK violations.
