Docs cleanup: stale-claim conflicts fixed (e810 stamps/probe.go, CX-5 candidate title, committed-path perf table now the X520 20G result with E810-era rows marked historical, ice-pair ring note), irdma/ice notes moved to e810, state.md halved (done-checklist, RX-steering and standing-goals duplication out; ECD suppression fact into modules/fs), changelog framing flattened to present tense

docs/hardware.md

@@ -17,15 +17,11 @@ Required for zero baseline loss; without them baseline loss is 0.02–0.3% and m
 
 1. **CPU governor → `performance`** on all cores. Biggest single contributor: under powersave, cores idle at 400 MHz, ramp too slowly, and drop frames at startup.
 2. **Disable adaptive coalescing**: `ethtool -C <dev> adaptive-rx off adaptive-tx off rx-usecs 25 tx-usecs 25`. Syntax/values differ per driver — re-derive per NIC.
-3. **Rings deep**, raised toward the max via `ethtool -G` (RX 8160 / TX 4096 on the ice pair). Effect was not isolated in testing; don't claim it as a proven win.
+3. **Rings deep**, raised toward the max via `ethtool -G` (the tool asks RX 8160 / TX 4096; ixgbe takes it as-is). Effect was not isolated in testing; don't claim it as a proven win.
 4. **Socket buffers**: no sysctl change needed — the tool forces `SO_RCVBUFFORCE`/`SO_SNDBUFFORCE` (needs root) past the 4 MB `rmem_max` clamp.
 
 Verify a clean run shows `tx frames == rx frames` exactly before a run counts.
 
-## irdma (dev host only)
-
-`irdma` autoloads and binds ice ports, making `ETHTOOL_SCHANNELS` fail EBUSY ("Cannot change channels when RDMA is active") and failing the channels host check. `sudo rmmod irdma` (usage count 0; returns on reboot). The appliance kernel has no irdma. ice also refuses channel changes while ntuple rules exist — cabletest clears its own first.
-
 ## Running
 
 Through `./harness`: `sudo go run ./harness -for 8s -at 4s -- -a <portA> -b <portB>`.