Memory FAQ
How do I provide an allocator?
Once: Parser.init(allocator). Everything else inherits it. See Allocators.
What must I deinit?
Parsers, trees, cursors, queries, query cursors, and changed-range slices. Nodes never.
What happens on allocation failure?
OutOfMemory propagates with partial state cleaned up — covered by failing-allocator tests.
Can objects outlive the allocator?
No. The allocator must outlive everything created from it.