chore(distill): per-node peer convergence helper + seed-placeholder guard

[jinon86]

What

Rollout tooling for unifying the Honcho distill author peer to family-assistant (follow-up to #327).

1. scripts/converge-distill-peer.sh (new, idempotent, node-local)

• --check (default, read-only): reports the resolved aiPeer the way the distill hooks resolve it (.hosts.hermes.aiPeer // .aiPeer), exit 2 if an explicit non-target override needs applying.
• --apply: rewrites an explicit override (flat or nested schema) to family-assistant, backing up the config first; validates JSON before replacing.
• --verify: posts a labelled canary and confirms the author peer live.
• Nodes with no explicit override need nothing — the fix(distill): unify Honcho distill author peer to family-assistant #327 fallback already yields family-assistant.

2. Seed-placeholder guard (honcho-push.sh / queue-drain.sh)

setup.sh seeds honcho.json with baseUrl: "<HONCHO_BASE_URL>". The hooks treated that non-empty placeholder as a real URL → /health fails → junk queued on every distill until an operator fills it. Now a <...> placeholder is treated as unconfigured → clean no-op. Fixes junk-queuing on every freshly seeded node.

Why

Distill author peers were scattered (hermes/dungae/soonwook/nosuk). Cross-referencing metadata.node → author peer identified the explicit overrides per node; this helper converges them safely and idempotently. Design A, forward-only, distill-only. Operator-approved.

Evidence

• Tests: honcho-push 17/0, queue-drain 16/0.
• Helper validated: flat .aiPeer, nested .hosts.hermes.aiPeer, idempotent re-run (exit 0), placeholder → no baseUrl no-op, absent config → off no-op.

Rollout (post-merge)

On each node: setup.sh (self-update) → scripts/converge-distill-peer.sh --check → --apply if it reports needs-apply. Confirmed override nodes: dungae, soonwook, daegyo, gongyung, nosuk, yukson (currently mis-set to nosuk), seoseo. Verify: sogyo, bangtong, jingun, gongmyoung.

🤖 Generated with Claude Code

[seoseo-ai]

CI all green (7/7). Follow-up to #327 (distill peer convergence rollout tooling) + fixes a real bug: seed placeholder baseUrl treated as real URL, causing junk queue entries on every distill for freshly-seeded nodes. Tests pass (honcho-push 17/0, queue-drain 16/0), operator-approved per PR body. Auto-approved per PR-first policy (jinon86 author needs seoseo-ai reviewer).