feat(FN-1403): add run audit system with SQLite persistence

- Add run-audit event types and SQLite schema migration
- Implement typed store read/write/query APIs for run audit
- Make audit writes atomic with task updates (transactional writes)
- Fix SQLite parameter type casting in db layer
- Add comprehensive tests for RunMutationContext and audit functionality

packages/core/src/__tests__/task-documents.test.ts

@@ -51,7 +51,7 @@ describe("TaskStore task documents", () => {
 
     expect(tableNames.has("task_documents")).toBe(true);
     expect(tableNames.has("task_document_revisions")).toBe(true);
-    expect(db.getSchemaVersion()).toBe(24);
+    expect(db.getSchemaVersion()).toBe(25);
 
     const index = db
       .prepare(