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address mara: drop CompactionMode, always checkpoint-then-compact

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damocles 2026-06-29 19:35:29 +02:00 • committed by mara
commit c7bac398b2
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docs/coordinator.md
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@ -40,7 +40,7 @@ somewhere."
| `Destroy` | For future use (`destroy --purge` does real I/O). Variant exists so the wire shape doesn't change later; not currently routed through the queue. |
| `Restart` | Stop + start a container without touching config (~5-10s). Routed through the queue so it serialises against in-flight rebuilds for the same agent — prevents a restart racing a rebuild mid-flight. Sources: dashboard ↺ button, the `restart` MCP tool. |
| `PermChange` | Write a tool-group or capability change to the shared JSON file (`tool-groups.json` / `capabilities.json`), then rebuild the agent so the updated `HIVE_TOOL_GROUPS` / `HIVE_CAPABILITIES` env var takes effect. Serialising the file write through the queue prevents concurrent dashboard batch-apply actions from racing on the shared file. After a successful file write, emits `CapabilitiesChanged` or `ToolGroupsChanged` SSE snapshot so the P3RM1SS10NS tab updates live. |
| `GracefulStop` | Quiesce then stop a container (the `?graceful=true` path on `/api/kill/<agent>`). Signals the harness (its next `Recv` returns `GracefulStop` — the inbound fence — so it runs **one** stop-checkpoint turn that flushes durable `/state` and compacts the session if it crossed the watermark, then exits) and **immediately releases the build lane**, spawning a detached watcher that holds the `Stopping` transient across the drain (bounded by a 3-min timeout → hard-stop fallback) and then enqueues a fast-lane `Stop` (`parent_id` = this entry) for the actual `nixos-container stop`. Net: a whole-hive graceful stop signals every agent up front, drains overlap, and only the container teardowns serialise (on the fast lane). Queued so the signal can't race an in-flight rebuild for the same agent. |
| `GracefulStop` | Quiesce then stop a container (the `?graceful=true` path on `/api/kill/<agent>`). Signals the harness (its next `Recv` returns `GracefulStop` — the inbound fence — so it runs a stop-checkpoint turn that flushes durable `/state`, then takes the normal post-turn compaction path if it crossed the watermark, then exits) and **immediately releases the build lane**, spawning a detached watcher that holds the `Stopping` transient across the drain (bounded by a 3-min timeout → hard-stop fallback) and then enqueues a fast-lane `Stop` (`parent_id` = this entry) for the actual `nixos-container stop`. Net: a whole-hive graceful stop signals every agent up front, drains overlap, and only the container teardowns serialise (on the fast lane). Queued so the signal can't race an in-flight rebuild for the same agent. |
**Intentionally not queued** (sub-second ops): the *hard* `start`, `stop`, `kill`. (A *graceful* stop is the `GracefulStop` kind above — it takes a checkpoint turn, so it rides the queue.)