docs: reconcile the E-1608 README with the real-board run and the scan lookup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/claude/build-and-run.md

@@ -127,8 +127,8 @@ required; a MAC with no `address` is looked up by a broadcast sent on every inte
 The enabled channels times `scan_rate` must not exceed 250 kS/s. `tools/mock_e1608.py` is a protocol
 mock of the board for development (UDP discovery and handshake, TCP commands, a scan stream with a sine
 per channel, calibration memory, `--port`, `--mac`, `--log FILE`, `--drop-after S` and `--overrun-after S`
-switches, `--code N`); there is no real board in the loop, and the mock's header lists the items whose
-layout is unverified. Errors are written to stderr as `[e1608] ...`, once per distinct message.
+switches, `--code N`); the mock stands in for the board (a real board has been run once, with one channel; see
+the README), and the mock's header lists the items whose layout is unverified. Errors are written to stderr as `[e1608] ...`, once per distinct message.
 
 ```sh
 python3 tools/mock_e1608.py --port 54711 &

docs/claude/verification.md

@@ -442,7 +442,10 @@ precedent, not an exception.
 - `UDPSCOPE_PROBE_E1608_RECONNECT=8000` -- reads the source after the mock dropped the link and 500 ms
   later checks the frame count moved on. The reading's own entry is in `probe-readings.md`.
 - `UDPSCOPE_PROBE_E1608_SCAN=1000` with `UDPSCOPE_EXIT_AFTER_MS=6500`, run as `--source e1608 --source-opt
-  address=127.0.0.1` against `tools/mock_e1608.py` on its default port 54211 (the form scans that port) -- builds
+  address=127.0.0.1`. Start `tools/mock_e1608.py` first on its default port 54211 (the form scans that port; do
+  not pass `--port`) and kill it afterwards. The value is the delay of phase 1; phase 2 follows 2 s after it and
+  phase 3 (the line) 2 s after that, so phase 3 runs 4 s after phase 1 and the delay must stay below about
+  2500 ms for the line to print before the exit at 6500 ms. It builds
   the connection form, presses **Scan network**, expects the mock to be listed, clicks the result (address
   filled, MAC and subnet cleared), presses **Use MAC** (MAC filled, the others cleared), scans again and checks
   the results were replaced. `UDPSCOPE_PROBE_E1608_SCAN_MAC` names another board (a real one) instead of the