feat(admin): remove the Elasticsearch reindex/backfill cards (PPT-2644)

[camreeves]

Part of PPT-2644: PlaceOS search is now served directly from PostgreSQL full-text search (models #324/#325, rest-api #445 — merged and live). There is no Elasticsearch index left to rebuild, so the admin reindex/backfill controls are dead UI.

What

• Removes the two Database admin cards (reindex + backfill), their click handlers, progress signals and the POST /reindex / POST /backfill helpers from database-details.component.ts. The Zone tree export/import cards on the same page are unchanged.
• Drops the orphaned ADMIN.DATABASE_REINDEX* / ADMIN.DATABASE_BACKFILL* locale keys across all 7 locale files.
• Rewords the splitZoneSystems doc comment in cascade-delete.ts that justified its re-read step with "the index is Elasticsearch backed". The re-read through showSystem stays — concurrent edits can still race the zone walk, and older backends still serve listings from a lagging index during rollout — only the rationale is updated.
• Drops the now-unused TranslatePipe / apiEndpoint / post imports the card removal orphaned (was warning NG8113 in the production build).

Verification

• tsc --noEmit -p tsconfig.app.json exits clean on the branch.
• Production build green on this branch (it surfaced the NG8113 unused-import warning that the final commit removes).
• grep -riE 'elasticsearch|search-ingest|neuroplastic|reindex|backfill' over src/ and public/assets/locale/ returns nothing — no ES-era references remain.

Merge order

Timing is flexible relative to the other PPT-2644 infra-removal PRs: the server keeps /reindex and /backfill as deprecated 200 no-ops, so both the old UI against the new backend and this UI against any backend work fine.

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Project	Deployment	Actions	Updated (UTC)
backoffice	Ready	Preview	Aug 13, 2026 1:38am

[greptile-apps]

Greptile Summary

Removes obsolete Elasticsearch reindex and backfill controls now that search is served by PostgreSQL.

• Removes the admin cards, request helpers, handlers, progress state, and unused imports.
• Removes the associated translation keys from all supported locales.
• Updates the cascade-delete comment while preserving its defensive re-read behavior.

Confidence Score: 5/5

The PR appears safe to merge with no actionable defects identified.

The obsolete UI, its private handlers, request helpers, and translations are removed consistently, while the remaining database administration behavior and cascade-delete runtime logic are unchanged.

Important Files Changed

Filename	Overview
src/app/admin/database-details.component.ts	Cleanly removes the obsolete controls and their now-unused implementation without affecting the remaining zone import/export features.
src/app/common/cascade-delete.ts	Rewords documentation to reflect current and transitional stale-listing scenarios without changing runtime behavior.
public/assets/locale/ar.json	Removes only the four orphaned reindex/backfill translations.
public/assets/locale/en-AU.json	Removes the orphaned translations; the additional changed lines are whitespace-only cleanup.
public/assets/locale/en-GB.json	Removes the orphaned translations; the additional changed lines are whitespace-only cleanup.
public/assets/locale/en-US.json	Removes the orphaned translations; the additional changed lines are whitespace-only cleanup.
public/assets/locale/es.json	Removes only the four orphaned reindex/backfill translations.
public/assets/locale/fr.json	Removes only the four orphaned reindex/backfill translations.
public/assets/locale/jp.json	Removes the orphaned translations; the additional changed lines are whitespace-only cleanup.

_{Reviews (1): Last reviewed commit: "fix(admin): drop the now-unused Translat..." | Re-trigger Greptile}