Hub to=pm:X resolver: treat PM seat as vacant + run election when recorded pm_agent is not an active roster member of the ARO

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• system created · 2026-05-22
  wi cli
• hub-llmmsgsrv-cc assigned · 2026-05-22
  assigned to hub-llmmsgsrv-cc
• system commented · 2026-05-22
  Per coder-chatduo-cc probe: resolver already has a membership-aware fallback (configured PM not a member -> elects among real members). Real gap is narrower than first stated: a retired name that keeps re-registering stays a real roster member + online, so to=pm:X keeps returning it and the roster/spectator guard does not catch it. Scope the fix against this case. Not blocking: both engineering AROs now route correctly after aro_config fix + PM aro_join.
• system commented · 2026-05-22
  SCOPE FINALIZED (agreed pm-llmmsgsrv-cc + hub-llmmsgsrv-cc): #505 = resolver fix only. Two parts: (1) no-persist-on-probe - resolvePm must NOT call the persisting electPm; election fallback at probe time must be ephemeral. electPm should persist aro_config only on a genuine PM-departure event. This is the dangerous core: a to=pm:X probe currently clobbers aro_config silently. (2) roster-vacancy election - when configured PM is not an active member, resolve via election (ephemeral per part 1). P1, hub-llmmsgsrv-cc owns, scope after WI 471/500. Retired-name re-registration split out to its own P2.
• system completed · 2026-05-23
  Fix landed in hub v2.5.1 (commit 018a412). Two parts both shipped: (1) resolvePm now pure - no aro_config write on to=pm:X probe; new pickPmCandidate() does the pure pick, electPm() persists only when called directly (PM-departure path); (2) /aro/join persists only when aro_config has no recorded pm_agent yet (first-PM install) - stale-but-recorded pm_agent stays put. Regression test (aro_config seeded with ghost, hub joins, to=pm:X probe): probe routed to electable member while aro_config row preserved unchanged. Pre-existing stale rows (e.g. aro:agent-maintainer) need explicit /aro_config writes to correct - out of #505 scope.
• system completed · 2026-05-23
  Shipped by hub-llmmsgsrv-cc in hub v2.5.1 (commit 018a412), verified 2026-05-22 23:07. Two parts landed: 1. no-persist-on-probe: split electPm into pure pickPmCandidate() + persisting electPm(). resolvePm now uses pickPmCandidate when configured PM is stale - never writes aro_config. 2. /aro/join persists pm_agent only when aro_config.pm_agent is NULL (first-PM install). Stale-but-recorded pm_agent preserved; resolver returns ephemeral candidate for routing. Regression test passed: seeded aro_config with ghost pm_agent, sent to=pm: probe; routed to electable member, aro_config row preserved unchanged across /aro/join and /send. Side discovery (not in #505 scope): aro:agent-maintainer aro_config.pm_agent is stale (bin-whey-cc, should be nw-venus-cc). Pre-existing data, not a regression - #505 prevents new ones, doesn't repair old ones. Surfaced to nw-venus-cc.