Add fabric/concentrator packages, FDIR, and lab documentation
Introduce fiwicontrol.fabric (definition, merge, builder CLI, fingerprint checks)
and fiwicontrol.concentrator for local workstation snapshots. Add system scripts
(fabric_realize, dump_concentrator, pcie_hotswap_harness, acroname discovery).
Document architecture (docs/architecture.md) and fault handling (docs/fdir.md);
expand fabric-builder, system-test-scripts, pcie-hotswap-setup, install, and
README with env vars, security boundaries, and intended-use limits.
Harden INI merge and serial resolution for pcie_bdf and patch_panel_ports;
bound patch-panel JSON reads; gate remote SSH tests behind FIWI_RUN_REMOTE_TESTS.
fabric_realize: exit codes, --realize-discovery-timeout, --patch-panel-json,
and [FiWi-FDIR] stderr lines. Fabric.realize supports discovery timeout and
FDIR logging; binding_cache_status logs fault paths.
Made-with: Cursor
376616808e