test(readFileTool): fix check-types TS2352 on console.warn restore cast

Cast through `unknown` before `ReturnType<typeof vi.spyOn>` so tsc accepts
the conversion (console.warn's signature doesn't overlap with MockInstance).
Unblocks the `compile` CI job.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: proyectoauraorg

src/core/tools/__tests__/readFileTool.spec.ts

@@ -200,7 +200,7 @@ describe("ReadFileTool", () => {
 		// doesn't leak into subsequent tests. Scoped to console to avoid restoring
 		// the module-level mocks (e.g. ImageMemoryTracker) set up for the suite.
 		if (vi.isMockFunction(console.warn)) {
-			;(console.warn as ReturnType<typeof vi.spyOn>).mockRestore()
+			;(console.warn as unknown as ReturnType<typeof vi.spyOn>).mockRestore()
 		}
 	})