rpc: release swap pins per request (fix tickData "all cache pages pin…

…ned")

rpcUnixHandleConn is a one-shot detached thread with no PinScope, so tickData/ticks/tx pins taken by handlers leaked forever (thread_local arena dies unreleased) and accumulated to CACHE_PAGE over an epoch -> fatal at epoch end. Wrap dispatch in a PinScope.

merge main

Merge branch 'develop' of https://github.com/qubic/core into develop

swapvm: generation-guard pins across reset()

Stale pins held by request threads across beginEpoch no longer mis-decrement a fresh pin after the cache is wiped.

rpc_routes.h: drop route-path divider comments that restate the RPC_R…

…OUTE path

fork rollback: add --fork-force-rollback-every N test flag

Forces a single-tick fork + rollback (rewind to the tick-1 state, then
strict replay) every N ticks on an AUX node (0 = off), to stress the
rollback path at a controlled cadence instead of every tick. The forced
tick establishes a fresh checkpoint and verdict forces the mismatch
branch; MAIN mode and the strict re-run are skipped as usual.

Validated live (.49 testnet MAIN + local AUX, N=5): 42 promotes all at
tick%5==0, log-state digest matches the canonical MAIN at every checkpoint,
no crashes.

add auto release avx512

add linux-build-avx512.yml

Merge pull request #34 from qubic/hotfix/2026-06-14-network-stability

fix several bugs

Merge branch 'main' of https://github.com/qubic/core

# Conflicts:
#	src/four_q.h
#	src/public_settings.h
#	src/qubic.cpp