DECT basestations rely on multicast for handset discovery/registration.
When Meraki switches have IGMP snooping enabled without a querier —
or per-switch overrides that deviate from a DECT-safe policy — those
frames are pruned and DECT handsets silently fail to register.
- integrations/meraki/switches.js: getSwitchMulticastSettings,
setSwitchMulticastSettings, and pure summarizeMulticast verdict fn.
- services/phoneService.js: fires the multicast fetch as soon as the
network id is known, overlapping DECT enrichment; attaches
data.multicast summary to the collector output. Non-fatal on error.
- services/renderers/phoneStatusRenderer.js: emits a single warning
line inside the DECT Basestations section only when needsFix is
true, itemizing which parts deviate (default snoop, default flood,
N overrides).
- commands/igmpFix.js: frozen DECT_SAFE_MULTICAST_PAYLOAD constant
({snoop:false, flood:true, overrides:[]}), adaptive-card builder,
and confirm/cancel handlers.
- commands/phoneStatus.js: appends the adaptive card when needsFix
and the trigger came from chat (skipped on HTTP path).
- index.js: IGMP_FIX_ACTIONS set + dispatch branch mirroring the
HOST_ASSIGN pattern (one-shot pending lookup, censorActionCard,
domain call).
- utils/pendingIgmpFixes.js: 15-min TTL pending-card store.
- tests: 11 summarizer cases (all deviation permutations + malformed
input), 4 renderer cases (each warning-line shape + silence when
needsFix false or no DECT), and a frozen-constant regression guard
on the PUT payload. Full suite: 47/47 passing.
jmcqueen
d112e45eb6