chore(platform-objects): record the digest the extractor now writes, and the changeset

`email_template.fields.variables.helpText` is a JSON shape example — language-neutral,
so the faithful es-ES and ja-JP rendering is the source verbatim. That makes each leaf a
byte copy of its source, which is exactly the condition under which `os i18n extract`
records a source digest, so both tables gain one entry.

Generator output, not a hand-edit: the entry records a TRUE fact (the leaf is a copy of
the CURRENT source), which is the opposite of the false claim the file header warns
against. Its effect is to move this one leaf OUT of LEGACY-TRUSTED and INTO the
staleness instrument's coverage — if the JSON example is ever revised, this leaf now
reports stale instead of silently serving the superseded revision.

Claude-Session: https://claude.ai/code/session_01ADLdAs2pVcH17h9tZKWMBg
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

.changeset/es-ja-metadata-forms-source-parity-nine.md

@@ -0,0 +1,38 @@
+---
+"@objectstack/platform-objects": patch
+---
+
+fix(platform-objects): nine es-ES and ja-JP metadata-form leaves say what their source says
+
+Nine leaves of `metadataForms` served a superseded English source revision in both es-ES
+and ja-JP. Each was a faithful translation of the sentence the source carried when it was
+extracted; the English moved afterwards and bundle merge fills gaps only, so a
+present-but-stale leaf is never refreshed by re-extraction.
+
+The nine, by the test the census applies — does the string assert something the source
+does not, or drop a distinct concept the source names:
+
+- `object.fields.fields.trackHistory.helpText` said "keep change history" in both. The
+  source says `Summarize this field on the record activity timeline` — a different
+  feature, not a loose translation.
+- `object.fields.isSystem.helpText` dropped `defaults sharing to public`.
+- `view.fields.filter.helpText` dropped the whole clause after the dash — the shared
+  visual builder and its field-type-aware operators and value inputs.
+- `action.fields.body.helpText` said "JavaScript code to run", losing the L1-expression /
+  L2-sandboxed-body distinction. It now reads as the sibling leaf
+  `hook.fields.body.helpText` already renders that same source sentence in both locales.
+- `action.sections.advanced.description` asserted bulk operations, which the source does
+  not name.
+- `page.fields.type.helpText` asserted the page-kind enum the source stopped listing and
+  dropped the "List / Interface binds a source view into a curated surface" sentence.
+- `report.sections.basics.description` said "data source" where the source says report
+  type.
+- `report.fields.columns.helpText` said "columns to show in the report", losing both
+  `Dimension names across` and `matrix only`.
+- `email_template.fields.variables.helpText` described a list of variable names; the
+  source is a JSON shape example, which is language-neutral and is now carried verbatim.
+
+Values only — the key set is unchanged at 773 leaves, identical across all four bundles.
+The recorded-source-hash table is untouched and needs no entry: it records a digest only
+while a leaf is still a byte copy of its source, so all nine, being real translations,
+carry no entry and are LEGACY-TRUSTED by construction.

packages/platform-objects/src/apps/translations/es-ES.source-hashes.generated.ts

@@ -63,6 +63,7 @@ export const esESGeneratedSourceHashes: Readonly<Record<string, string>> = {
   "metadataForms.dataset.sections.source.label": "8fe786e8e29c8cec",
   "metadataForms.doc.description": "f233af60238b0879",
   "metadataForms.doc.label": "3f35cf5088b999ad",
+  "metadataForms.email_template.fields.variables.helpText": "27197774c2cda633",
   "metadataForms.field.fields.placeholder.helpText": "07cecac0844860be",
   "metadataForms.field.fields.placeholder.label": "44d62b55b63fe718",
   "metadataForms.field.fields.rows.helpText": "66755b9447e67a15",

packages/platform-objects/src/apps/translations/ja-JP.source-hashes.generated.ts

@@ -63,6 +63,7 @@ export const jaJPGeneratedSourceHashes: Readonly<Record<string, string>> = {
   "metadataForms.dataset.sections.source.label": "8fe786e8e29c8cec",
   "metadataForms.doc.description": "f233af60238b0879",
   "metadataForms.doc.label": "3f35cf5088b999ad",
+  "metadataForms.email_template.fields.variables.helpText": "27197774c2cda633",
   "metadataForms.field.fields.placeholder.helpText": "07cecac0844860be",
   "metadataForms.field.fields.placeholder.label": "44d62b55b63fe718",
   "metadataForms.field.fields.rows.helpText": "66755b9447e67a15",