hardware protocol v2: sessions, subscriptions and the transport worker

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Adds the logical protocol layer on top of the frame codec: session
handshake with negotiated frame size, session scoped symbol handles,
state subscriptions with periodic, on change and deadband filtering,
command events with duplicate protection and continuous controls with
stale update rejection, plus per connection rate limits and diagnostics.

A single worker thread owns all of the blocking transport work and
exchanges finished frames with the simulation thread through short locked
queues, so a stalled, flooding or unplugged controller cannot hold up the
simulation.

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Hirek

2026-09-05 20:30:32 +00:00

parent 7cb6f789f5

commit 4e3afdd2a6

12 changed files with 2230 additions and 0 deletions

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