save progress

src/ExportCenter/StellaOps.ExportCenter/StellaOps.ExportCenter.Infrastructure/AGENTS.md

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+# ExportCenter Infrastructure Agent Charter
+
+## Mission
+Provide deterministic, offline-safe infrastructure for ExportCenter (DB access, migrations, and storage adapters).
+
+## Responsibilities
+- Manage Npgsql data source configuration and tenant session state.
+- Maintain migration loader/runner with checksum enforcement.
+- Provide DevPortal offline storage and signing adapters.
+
+## Required Reading
+- docs/modules/export-center/architecture.md
+- docs/modules/export-center/provenance-and-signing.md
+- docs/airgap/offline-bundle-format.md
+- docs/modules/platform/architecture-overview.md
+
+## Definition of Done
+- Migrations are ordered, checksummed, and applied deterministically.
+- Storage adapters prevent path traversal and leave no partial files on failure.
+- Tests cover migration loading, signing, and storage behaviors.
+
+## Working Agreement
+- 1. Update task status to DOING/DONE in the sprint file and local TASKS.md.
+- 2. Review this charter and required docs before coding.
+- 3. Keep outputs deterministic and UTC normalized.
+- 4. Avoid nondeterministic IDs/timestamps in persisted metadata unless explicit.
+- 5. Revert to TODO if paused; capture context in PR notes.

src/ExportCenter/StellaOps.ExportCenter/StellaOps.ExportCenter.Infrastructure/TASKS.md

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+# ExportCenter Infrastructure Task Board
+
+This board mirrors active sprint tasks for this module.
+Source of truth: `docs/implplan/SPRINT_20251229_049_BE_csproj_audit_maint_tests.md`.
+
+| Task ID | Status | Notes |
+| --- | --- | --- |
+| AUDIT-0334-M | DONE | Maintainability audit for ExportCenter.Infrastructure. |
+| AUDIT-0334-T | DONE | Test coverage audit for ExportCenter.Infrastructure. |
+| AUDIT-0334-A | TODO | Pending approval (non-test project). |