feat(records): implement native eAkte vertical

docs/RECORDS_DOMAIN_BOUNDARY.md

@@ -28,22 +28,30 @@ Records management for file plans, records classification, retention schedules,
 - audit
 - transparency
 
-## Seed State
+## Implemented State
 
-The current repository state is intentionally small:
+The native kernel currently provides:
 
-- module manifest and entry point
-- tenant-level permission definitions
-- manager and viewer role templates
-- documentation topic describing the module boundary
-- Gitea issue workflow templates
-- manifest contract test
+- versioned file-plan nodes and record classes;
+- stable record identities, immutable OCC-guarded revisions, volumes, exact
+  filed items, and chronology;
+- independent valid and recorded time with current/at/all temporal reads;
+- tenant, purpose, actor/capacity, source authority, institutional context,
+  provenance, and idempotency fields;
+- provider-neutral exact-source capabilities, initially implemented by Files
+  file versions and Cases revisions;
+- tenant APIs, search projection, uninstall/retirement guards, and a Records
+  workspace using shared WebUI controls.
 
-No runtime API, database model, migration, WebUI route, or navigation item is registered yet. The first implementation slice should preserve the boundary above and only add user-visible surfaces once the workflow model is clear.
+Restricted object grants and the lifecycle after the planned/open stages remain
+separate governed slices. Archive transfer and destructive effects are not
+implemented by this kernel.
 
 ## First Implementation Slice
 
-Define record class, file plan node, retention schedule, disposal hold, archive transfer, and source document links.
+Complete restricted access, closure and retention calculation, holds,
+appraisal, disposition, transfer, recovery evidence, and one target-tested
+archive provider without moving source-module ownership into Records.
 
 The complete native/external boundary, temporal and purpose-aware record model,
 disposition lifecycle, German public-sector provider profiles, and staged