todo: post-rebuild missed-wake bug + ask rename + open-threads tracker

TODO.md

@@ -8,6 +8,8 @@
 - **Broadcast messaging**: allow sending messages with recipient "*" to all agents; deliver with hint "this was a broadcast and may not need any action from you"
 - **Multi-agent restart coordination**: when rebuilding all agents, manager should start first so it can coordinate post-restart confusion (notify agents, suppress unnecessary retries, etc)
 - **Shared docs/skills repo (RO)**: a single repo on the hive forge that every agent has read-only access to — common references, prompts, runbooks, "skills" the operator wants every agent to inherit without baking into the system prompt or `/shared`. Implementation likely: seed an `org-shared/docs` repo on first hive-forge boot, grant every per-agent user a read membership in the org. Agents `git clone` it (or use the API) to read; only the manager + operator can push.
+- **Rename `ask_operator` → `ask` with optional `to` param**: today `mcp__hyperhive__ask_operator` always targets the operator dashboard. Generalise: rename to `ask`, add optional `to: <agent_name>` argument that defaults to `"operator"`. When `to` is another agent, route the question to that agent's inbox as a structured "question event" (different from a plain send so the recipient can answer back with the same id and the answer threads back to the asker). Unblocks agent-to-agent structured Q&A without burning regular inbox slots.
+- **Loose-ends tracker + `get_open_threads` tool**: hive-c0re already knows about pending approvals + unanswered questions; soon will also know about open PRs on hive-forge. Aggregate these into a per-agent "open threads" view (e.g. `[{kind: "approval", id: 7, summary: "spawn alice"}, {kind: "question", id: 12, asker: "alice", summary: "deploy now?"}]`). New MCP tool `mcp__hyperhive__get_open_threads` returns the list so an agent can see what's still pending against it without rebuilding context from inbox history. Manager's version includes hive-wide threads.
 
 ## Reminder Tool
 
@@ -31,3 +33,4 @@
 ## Bugs
 
 - ~~**Pending message wake-up**~~ ✓ fixed (e423d57) — subscribe-before-check race in `broker.recv_blocking` meant a send landing between the initial `recv()` and `subscribe()` was missed; agent then sat on the 180s long-poll until another, unrelated message woke it. Now subscribe first.
+- **Post-rebuild system-message missed wake**: at 09:13:14 the dashboard showed `system → damocles container rebuilt` as ✓ delivered, but the agent harness never ran a turn for it (no claude invocation, no operator-visible activity). A subsequent `recv()` from inside the agent returned `(empty)`, confirming the message was popped + marked delivered server-side — yet drove no turn. Most likely cause: the agent_server `serve_agent_stdio` task is up and answering MCP/socket calls, but the `hive-ag3nt::serve` long-poll loop that drives `drive_turn` either died silently during rebuild or never restarted. Investigate: (a) does hive-ag3nt's serve loop survive `nixos-container update` cleanly, or does its tokio runtime get torn down mid-loop? (b) is there an early-exit path on a transient socket error during rebuild that drops the serve task without notifying the manager? (c) compare timeline with manager's own post-rebuild wake to see if this is rebuilt-agents-only or universal. Could be related to the `recv_blocking` fix in `e423d57` if the rebuild restarts the broker mid-subscribe.