Move project save commit planning to app core

docs/modernization/build-inventory.md

@@ -304,8 +304,10 @@ powershell -ExecutionPolicy Bypass -File scripts\automation\apple-remote-build.p
   serialization. The command also reports the app-core write-mode plan for
   direct first saves versus existing-target temporary writes, including the
   retained direct-write fallback when the temporary file cannot be opened, and
-  it is covered by forward-slash, Windows backslash, existing-target, and
-  invalid-path smokes.
+  the app-core commit plan for direct saves, successful temporary swaps,
+  target-remove failures, and rename-after-remove failures. It is covered by
+  forward-slash, Windows backslash, existing-target, remove-failure,
+  rename-failure, and invalid-path smokes.
 - Live equirectangular, layer, animation-frame, and cube-face export adapters
   now prepare and log the same payload-bearing canvas document snapshot plus
   shared paint-renderer export-readiness report.
@@ -1186,7 +1188,10 @@ powershell -ExecutionPolicy Bypass -File scripts\automation\apple-remote-build.p
   app-core pure PPI save-writer route for payload-complete snapshots, log
   generated byte counts, and derive project-save target/tmp/timelapse paths
   plus direct-vs-temporary write-mode decisions through `pp_app_core` before
-  delegating to retained `Canvas::project_save`.
+  delegating to retained `Canvas::project_save`. Direct save, successful
+  temporary swap, remove-failure, and rename-after-remove commit outcomes are
+  now classified by the same app-core planner before retained success metadata
+  mutation.
   Retained legacy UI/canvas
   execution and actual live save serialization remain tracked by `DEBT-0040`,
   `DEBT-0041`, and `DEBT-0042`; the pure snapshot-to-PPI export handoff is