Remove numTimesSent and maxTimesSent from communicator

[chrxh]

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Removes the Signal::numTimesSent, Sender::maxTimesSent and SenderGenome::maxTimesSent fields together with their TO, GenomeTO, Desc and GenomeDesc equivalents, and all associated logic.

Removed

• Structs/fields: Signal::numTimesSent, Sender::maxTimesSent, SenderGenome::maxTimesSent and the matching SignalTO/SenderTO/SenderGenomeTO/SignalDesc/SenderDesc/SenderGenomeDesc members
• Logic: communicator send-count gating (processSender/tryTransmitSignal), neuron min-numTimesSent propagation, serializer members + IDs, GUI "Max times sent" inputs, validation clamps, mutation, genome hash, and the now-unused CommunicatorMaxTimesSent_* constants
• Tests: dropped the two obsolete tests (sender_maxTimesSentExceeded_noSignalTransmitted, sender_signalPriority_lowerNumTimesSentWins), stripped field references from the rest, and bumped the mutation coverage-guard field count 2 -> 1

Testing

• Release build: OK
• EngineInterfaceTests (159), PersisterTests (64), EngineTests (3057): all pass

🤖 Generated with Claude Code
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