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Sync tenant database startup migrations
2026-09-23 01:44:33 +00:00

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FieldLens

FieldLens is the Arrowstack-hosted production application around the reusable, local-first FieldLens Core.

Repository boundary

  • apps/web owns Arrowstack browser authentication, sync, station/device status and the production PWA shell.
  • apps/api owns JWT/RBAC, sync ingestion, PostgreSQL, device/station registration and server-side provider adapters.
  • packages/contracts is the versioned network contract shared by the browser and API.
  • packages/fieldlens-core is a pinned vendor copy of the public reusable core.
  • migrations contains versioned PostgreSQL schema changes.

The public source of truth is dmparrow/feildlens-core (spelling intentional). The initial vendor import is pinned to commit:

90d38751eea2bed79f4c9f54c75687ea9aba350a

The private prototype dmparrow/net is not a production dependency and is not modified by this repository.

Local-first invariant

Capture writes to IndexedDB first. Remote authentication, API availability, PostgreSQL availability and reference-data availability are not prerequisites for scanner, EAN pallet, OCR/conformity or local review workflows.

Configuration

See the root and app-specific .env.example files. Never commit production secrets.

Validation

npm install
npm run verify
docker build -t fieldlens .

For Arrowstack database-per-tenant deployments, the restricted application runtime identity owns DDL inside its dedicated database. The API applies versioned migrations at startup under a PostgreSQL advisory lock before it begins listening; applied migration filenames and checksums are recorded so startup is idempotent and changed historical migrations fail closed.