Erayd 9a8aeb25ab Add a general-purpose packet cache (#8341) ...

* Add general-purpose packet cache

This commit adds a caching system that will save packet data in a much
more compact form than the regular MeshPacket protobuf. It cannot be
worked with directly to the same degree (although the packet header is
available), but consumes *much* less memory, and as a result can be used
to temporarily store large numbers of packets.

Cached packets can be retrieved either by their (from, id) tuple, or by
their hash.

This cache is a pre-requisite for the upcoming packet replay feature.

* Remove debug initialiser

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Fix ordering

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Add missing size assignment

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Add comments for hash & bucket macros

* Make it clear that this field stores a map of the original data

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

2025-10-14 19:22:45 -05:00

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