Add project command API

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

@@ -362,6 +362,8 @@ Tasks:
 - define concrete serializable domain command descriptions and executors
   outside React
 - [x] persist undo/redo eligibility on the server
+- [x] expose public command, undo and redo endpoints for the first supported
+  update command types
 - add named and periodic logical project snapshots
 - restore a historical snapshot as a new revision
 - keep database backups separate from logical history
@@ -385,6 +387,9 @@ Implemented foundation:
   late-failure rollback coverage
 - a read-only project history endpoint exposes revision, stack depths and top
   change-set ids
+- a central application dispatcher reconstructs persisted commands and exposes
+  optimistic command, undo and redo endpoints for Circuit and CircuitDeviceRow
+  field updates
 - revision metadata, change-set payloads and the project counter are committed
   in one SQLite transaction
 - a stale expected revision produces no history writes