Test Details Overview

Add batch add_many method to block processor (#5058)

* Batch enqueue blocks in block processor

Add `block_processor::add_many()` to validate work, queue blocks under
one lock, and emit a single wakeup plus aggregated stats.

Use the batch API in bootstrap processing, block-processing benchmarks,
and node entry paths that previously enqueued blocks one by one.

* Require explicit source for block_processor::add

Remove the default `live` source from `block_processor::add`
and update live and test call sites to pass the intended
source explicitly.

* Add block processor tests

Cover add, add_blocking, and add_many behavior.

* Count block processor stats on success

Move `block_processor` stats increments after `add_impl()` so
`process` and `process_blocking` are only counted when the block
is actually added for processing.

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Type: commit

Hash: f511bf94458e7b76164192004fb8b1c48e498c12

Created: yesterday

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gr0v1ty/nano-node:f511bf94458e7b76164192004fb8b1c48e498c12