## TL;DR
Adds a workspace upgrade command that normalizes index names to the
current v2 deterministic naming convention (IDX_ prefix). This will
close https://github.com/twentyhq/twenty/issues/21383 : uniqueness
constraint cannot be disabled (for users who set it before v2
determinist naming is enforced).
### Background
The deterministic index name embeds the table name, columns, uniqueness
and where clause. The naming convention changed on **2025-09-23**
(#14567 - added the `IDX_`/`IDX_UNIQUE_` prefix and folded the table
name into the hash). Index rows created before that kept their old name
in `core."indexMetadata"`, and nothing rewrites it (only targeted
phone/relation rebuilds got new names).
Code paths that locate an index by recomputing its expected name then
miss these legacy-named rows. The most visible symptom is #21383:
toggling a field's `isUnique` from `true` → `false` recomputes the
expected unique-index name, fails to find the legacy-named index, and
silently no-ops — so uniqueness can't be disabled.
### What the command does
Per workspace, for each index:
- recomputes the expected name with the same generator the app uses
(`generateFlatIndexMetadataWithNameOrThrow`);
- if the stored name differs → **rename** it (metadata `UPDATE` + a new
metadata-only `ALTER INDEX … RENAME`, which preserves the unique
constraint with no rebuild/lock);
- if a correctly-named twin already exists (the legacy +
freshly-generated duplicate case) → **drop the redundant** one (physical
+ metadata, field rows cascade) and keep the canonical;
- invalidates the metadata cache so the running app + `isUnique`
derivation reflect the new names.
Honors `--dry-run`, wraps writes in a transaction (rolls back on error),
and skips (with a warning) any single index whose name can't be
recomputed so it can't abort the whole workspace.
### Notable changes
- New `renameIndex` on `WorkspaceSchemaIndexManagerService` (`ALTER
INDEX IF EXISTS … RENAME`).
- Planning logic extracted into a pure, unit-tested util
(`planIndexNameNormalization`).
Marie
4eb28b73c7