fix(orchestrator): reap registry rows whose bottle is no longer running

A registry row only ever left the registry two ways: an explicit
teardown_bottle (the launcher's cleanup callback) or the same-IP supersede
sweep in register(). Neither runs when the launching CLI dies hard, so the
row outlives its container.

That orphan is not inert. Source IPs are recycled by the backend's DHCP and
by_source_ip fail-closes on ambiguity, so a leftover row at a reused address
resolves no policy at all for the next bottle that lands there — and a
bottle with no policy denies every host, which surfaces to the agent as
"host X is not in the allowlist" for hosts that were never the problem.

Add reap_absent/reconcile and call it from the macOS launch path before
registering, so each launch self-heals the registry. Restores the invariant
the data plane needs: at most one active row per live address, and none for
a dead one. The second half matters as much as the first — when several rows
claim a *live* address the newest wins and the rest are swept, otherwise a
recycled address stays ambiguous, which is exactly the bricked state.

The host supplies the live set because the orchestrator runs inside the
infra container and cannot see the backend. A grace window exempts rows
younger than it, so reconciliation cannot race a bottle still coming up, and
a reconcile failure is logged rather than blocking an otherwise-fine launch.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

bot_bottle/orchestrator/service.py

@@ -13,15 +13,20 @@ Launch lifecycle:
     and returns the record. If the broker rejects/fails, the registry entry
     is rolled back so a failed launch leaves no orphan.
   * `teardown_bottle` sends a signed teardown request, then deregisters.
+  * `reconcile` sweeps rows whose bottle is no longer running — the
+    self-heal for the teardown paths that never got to run (a hard-killed
+    launcher), since an orphan row at a recycled source IP bricks the next
+    bottle that lands on it.
 """
 
 from __future__ import annotations
 
 import json
+from collections.abc import Iterable
 from datetime import datetime, timezone
 
 from .broker import LaunchBroker, LaunchRequest, sign_request
-from .registry import BottleRecord, RegistryStore
+from .registry import DEFAULT_REAP_GRACE_SECONDS, BottleRecord, RegistryStore
 from .gateway import Gateway
 from ..supervise import (
     AuditEntry,
@@ -117,6 +122,30 @@ class Orchestrator:
         self._tokens.pop(bottle_id, None)
         return True
 
+    def reconcile(
+        self,
+        live_source_ips: Iterable[str],
+        *,
+        grace_seconds: float = DEFAULT_REAP_GRACE_SECONDS,
+    ) -> list[str]:
+        """Drop registry rows for bottles that are no longer running, and
+        forget their in-memory egress tokens. Returns the reaped bottle ids.
+
+        The caller supplies the live set because only the host can enumerate
+        its own containers — the orchestrator runs *inside* the infra
+        container and has no view of the backend. Deliberately does not
+        broker a teardown: the container is already gone, so there is nothing
+        to stop, and a broker error must not stop the sweep from clearing
+        the row that would otherwise brick the next bottle at that address.
+
+        See `RegistryStore.reap_absent` for why orphans accumulate and why
+        they are harmful rather than merely untidy."""
+        reaped = self.registry.reap_absent(
+            live_source_ips, grace_seconds=grace_seconds)
+        for rec in reaped:
+            self._tokens.pop(rec.bottle_id, None)
+        return [rec.bottle_id for rec in reaped]
+
     def tokens_for(self, bottle_id: str) -> dict[str, str]:
         """The bottle's in-memory egress auth tokens (env_name -> value), or
         empty. The gateway injects these per request; they are never