# US01-03 — Discover and Reconcile Stable Assets

Epic: [E01](../E01-shared-identity-inventory.md)

As a user, I want scans to discover eligible photos and retain identity across moves
so reorganizing folders does not lose prior work.

## Acceptance criteria

- Donor discovery and reconciliation logic is extracted behind `InventoryService`.
- All supported roots use one boundary and exclusion policy; unsafe symlink paths fail.
- New, moved, copied, replaced, missing, active, and archived occurrences are distinct.
- Enumeration is deterministic and rescanning unchanged input is idempotent.

## Automated tests

- Unit/property tests cover path normalization, boundaries, and reconciliation.
- Integration tests move, copy, replace, remove, and rescan fixture assets, asserting
  stable IDs and exact durable states after restart.

## Dependencies

- US01-02