Add circuit history commands

docs/circuit-list-editor-api.md

@@ -23,13 +23,15 @@ concurrency checks.
   - executes the eligible inverse or forward command as a new auditable
     revision
 
-The public dispatcher currently supports `circuit.update`,
-`circuit-device-row.update`, `circuit-device-row.insert` and
-`circuit-device-row.delete`, all with schema version `1`. Other command types
-are rejected. Insert commands contain the complete row with its stable id;
-delete commands identify the row and its expected circuit. This makes deletion
-undoable without generating a replacement identity. The editor does not
-consume these endpoints yet.
+The public dispatcher currently supports `circuit.update`, `circuit.insert`,
+`circuit.delete`, `circuit-device-row.update`,
+`circuit-device-row.insert` and `circuit-device-row.delete`, all with schema
+version `1`. Other command types are rejected. Insert commands contain the
+complete entity or circuit block with stable ids; delete commands include the
+expected parent identity. Circuit snapshots contain zero, one or multiple
+complete device rows. This makes deletion undoable without generating
+replacement identities or renumbering circuits. The editor does not consume
+these endpoints yet.
 
 Example:
 

docs/current-architecture.md

@@ -82,10 +82,13 @@ die unterstützten Typen `circuit.update` und `circuit-device-row.update` über
 `circuit-device-row.insert` und `circuit-device-row.delete` als atomare
 Strukturkommandos vorhanden. Beim Löschen wird die vollständige Zeile im
 inversen Kommando gesichert, sodass Undo dieselbe UUID und alle Fachwerte
-wiederherstellt. Das Grid verwendet diese Endpunkte noch nicht; seine sichtbare
-Historie bleibt daher sitzungslokal. Die übrigen Struktur-, Synchronisierungs-
-und Löschoperationen müssen vor der Frontend-Umstellung ebenfalls als
-persistente Commands modelliert werden.
+wiederherstellt. `circuit.insert` und `circuit.delete` behandeln einen
+Stromkreis mit null, einer oder mehreren Gerätezeilen als vollständigen Block.
+Undo bewahrt dabei sämtliche Circuit-/Row-UUIDs und ändert keine
+Betriebsmittelkennzeichen. Das Grid verwendet diese Endpunkte noch nicht; seine
+sichtbare Historie bleibt daher sitzungslokal. Verschiebe-, Sortier-,
+Neunummerierungs- und Synchronisierungsoperationen müssen vor der
+Frontend-Umstellung ebenfalls als persistente Commands modelliert werden.
 
 ## Projektgeräte
 

docs/project-history-and-external-model-architecture.md

@@ -176,12 +176,15 @@ Completed foundation:
 - `circuit-device-row.insert` and `circuit-device-row.delete` preserve stable
   row ids, complete deleted-row snapshots and circuit reserve state through
   atomic insert/delete, revision and stack transitions
+- `circuit.insert` and `circuit.delete` persist a complete circuit block with
+  zero, one or multiple device rows; undo restores all ids and fields without
+  renumbering
 
 Remaining constraints before completing persistent history:
 
 - extend the concrete project-scoped command union and executors beyond the
-  Circuit field and CircuitDeviceRow field/insert/delete slices; the generic
-  versioned command envelope is complete
+  Circuit field/insert/delete and CircuitDeviceRow field/insert/delete slices;
+  the generic versioned command envelope is complete
 - route the remaining structural, synchronization and destructive domain
   writes through the shared command, revision and stack transaction boundary
 - replace the session-local frontend command stack only after server-side

docs/spec/07-implementation-phases-todo.md

@@ -393,6 +393,8 @@ Implemented foundation:
 - typed CircuitDeviceRow insert/delete commands preserve complete row snapshots
   and stable ids; row mutation, circuit reserve state, revision and history
   stack transition commit or roll back together
+- typed Circuit insert/delete commands treat the circuit and all device rows as
+  one block, preserve every stable id and never renumber neighbouring circuits
 - revision metadata, change-set payloads and the project counter are committed
   in one SQLite transaction
 - a stale expected revision produces no history writes