feat(engine): write-through persistence (M13 D2)

- facade storage session manager: project handles bind to the default
  SQLite library on project_new/load; every undo push/group_end/jump
  write-throughs via DatabaseBackend::save (diff journal); project_free
  flushes and unbinds
- background snapshot thread (Storage/SnapshotIntervalSec, latest-wins,
  newest 3 kept) with exit flush (oakengine_storage_flush)
- config-gated: storage only activates with an explicit
  Storage/Backend=sqlite, so headless consumers and tests never touch
  the real library; new exports: storage_flush/is_bound/last_error
- it_storage: kill -9 recovery, cross-session undo, snapshot pruning,
  multi-project isolation, graceful degradation
- also fixes a real config test polluting the user config.ini and the
  undo-stack test races

This commit is contained in:

Mike-Solar

2026-08-16 08:52:23 +08:00

parent b35f3b49bc

commit 5fabad8efd

18 changed files with 1386 additions and 16 deletions

									
										crates/oakengine/src/test_support/mod.rs
									
		+1
		
												View File
												
				@@ -42,6 +42,7 @@ mod it_codec;

				mod it_common;

				mod it_export;

				mod it_plugin;

				mod it_storage;

				mod it_task;

				mod it_undo;

				mod linkage;