[GreenGrassBlueOcean]

Summary

Addresses issue #564 (remarks comment 5917195080 and comment 5917278868) by adding the on-wire MH202 burglar alarm trace as a golden fixture and adapting the topology and profile tests to OWNd's WHO 5 changes.

Companion to OpenWebNet-HA/OWNd#66. Merge this first, then OWNd#66. The tests accept both the pinned OWNd==2.0.0b9 and the #66 behaviour.

What changes for a shared bus (F454 + MH202)

 F454   WHO {..}     \
                      >--> who does each gateway own?
 MH202  WHO {..,5}   /
                                   |
                                   v
            does the MH202 uniquely carry a WHO the F454 lacks (WHO 5)?
                    |                                   |
                    | no (OWNd <= b9)                   | yes (OWNd#66)
                    v                                   v
            warm STANDBY                        SECONDARY that carries the alarm
            (repeats the primary)               (delegated WHOs now include 5,
                                                 repair copy names WHO 5)

How a WHO 5 frame reaches the panel

 WHO 5 frame on the bus
      |
      v
 WHERE starts with "#" (zone)?  --yes-->  not discovered as a panel; zone state only
      | no
      v
 WHERE == "" (empty spelling)?  --yes-->  no address, dropped (a gateway WITHOUT a
      | no                                panel dumps these on the *#5*0## poll)
      v
 alarm_control_panel at WHERE 0
      |
      v
 *5*1*0##            -> armed_away
 *5*2*0## / *5*9*0## -> disarmed
 *5*11*0##           -> armed_home on OWNd <= b9, state unchanged on OWNd#66
                        (no capture shows a system-level WHAT 11)

Changes

1. Golden trace fixture & provenance: myhome_trace_MH202_who5_alarm_2026-09-30T18-13-13.json with 18 on-wire frames from a physical MH202 acting as a secondary next to MyHomeServer1 (contributed by @nicolacavallo84), plus a README with the capture provenance.
2. Trace replay: tests/test_issue_564_mh202_alarm_trace.py replays all 18 frames (*5*1*0##, *5*9*0##, *5*11*#1##, *5*18*#5##) through Home Assistant and checks the panel transitions (arm away, disarm, zone status does not pollute).
3. Topology: gateway_tier() keeps to the measured names (MH201, MH202, H4890, AM4890, LN4890). Other touch screens are unmeasured and stay tier 3, matching OWNd#66's narrowed aliases.
4. Shared-bus tests: tests/test_multi_gateway.py and tests/test_shared_bus_onboarding.py accept the WHO 5 capability delta for F454 (primary) + MH202 (secondary) in both directions.
5. Alarm tests: a system-level *5*11*0## accepts both armed_home (OWNd <= b9) and unchanged state (OWNd#66).
6. Docs: README and docs/trace-availability.md trace matrix updated via scripts/sync_documentation.py; edge-case assertions adapted in tests/test_issue_466_mh200_trace.py and tests/test_message_edges.py.

Verification

Full suite passes against the local OWNd#66 checkout (2963); the alarm tests also pass against OWNd==2.0.0b9; ruff clean.

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[GreenGrassBlueOcean]

Pushed topology.py trim: gateway_tier() is back to MH201 / MH202 / H4890 / AM4890 / LN4890, matching OWNd#66's narrowed aliases (other touch screens are unmeasured and stay tier 3).

Verified against OWNd#66 at 1445b39 (editable install): full suite 2963 passed, ruff clean.

Finding from the audit round: do not map the empty-WHERE WHO 5 spelling to 0 in OWNd. The MH200N trace in this repo (no panel) gets *5*9*## etc. as poll replies, and normalising them created a phantom alarm_control_panel.alarm_0 (test_mh200n_alarm_diagnostic_and_timed_turn_on_trace_replay failed). OWNd#66 now keeps empty as '' and only maps * to 0. Merge order stays: this PR first, then OWNd#66.

[GreenGrassBlueOcean]

Pushed a test update: with OWNd#66 at e6cfe52, a system-level *5*11*0## no longer maps to armed_home (is_armed_home is always False; no capture shows it). The panel keeps its last armed state. Full suite passed against it (2962 + this fix), ruff clean.