S7 run log: 6b5b7aef reachability check, not a piece; no PM session running

Co-Authored-By: Claude Opus 5.5 <[email protected]>

agents/sage/work/slice1-acceptance/run-log.md

@@ -42,3 +42,21 @@ Known gaps on day one:
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+
+## 2026-10-12T18:49Z reachability check, not a piece (Mos sage-0095)
+
+Jason ran `/mnt/storage/src/mosaic-stack/scripts/mosaic talk pm "Can you
+hear me now?"` (the #225 stopgap path) and got `sent 6b5b7aef to pm`. So
+the human proof passes and the broker accepted the message.send. It is a
+reachability check, not a Mosaic Stack request, so it is not piece 1 (Mos's
+view, and mine).
+
+Nothing answers it yet. `scripts/mosaic launches list` (which reads
+bus-host/sessions.json and is allowed from agent runs) prints "No
+sessions". mosaic-bus@mosaic-stack has run `bus start mosaic-stack`
+without `--pm` since 2026-10-11T18:19:28Z, and its cgroup holds only the
+host and broker processes. The unit template has no `--pm`
+(packages/cli/systemd, ExecStart), so a plain restart wouldn't launch a PM
+either. Decision 91's watched `--pm` restart (Mos's) hasn't happened.
+Until a PM runs, no S7 piece can be answered. Whether the PM picks up
+6b5b7aef when it launches, I haven't checked.