feat(orchestrator): slice 13d(i) — containerize the orchestrator (validated on docker)

Real-on-host testing surfaced two issues the unit-mocked slices couldn't:

1. The host (NixOS) firewall DROPS container->host traffic, so a host-process
   orchestrator is unreachable from the gateway container. Fix: run the
   orchestrator AS a container on the shared gateway network (PRD 0070's
   "virtualize the orchestrator") — the gateway reaches it by container name
   over docker DNS (container<->container, no firewall), and the host CLI
   reaches it via a published loopback port.
2. The control plane crashed the connection on a dispatch error (e.g. a
   broker failure) instead of returning 500.

Changes:
- lifecycle: OrchestratorProcess (host process) -> OrchestratorService
  (containers). Runs the control plane in the bundle image with the repo
  bind-mounted (orchestrator is stdlib-only), register-only stub broker so it
  needs NO docker socket (the backend launches agents; the host manages both
  containers). Registry DB persists via a host-root mount. ensure_running is
  an idempotent singleton over both containers.
- gateway: BOT_BOTTLE_ORCHESTRATOR_URL is now the orchestrator's *by-name*
  URL on the shared network (dropped the host.docker.internal hack).
- control_plane: _serve wraps dispatch — a failure returns 500, never crashes
  the connection.
- OrchestratorProcess default broker -> stub (register-only) for docker.

Validated live end-to-end: both containers up, gateway->orchestrator by name
OK, register -> resolve-by-source-IP returns the bottle's policy from inside
the gateway.

pyright 0 errors; pylint 9.83/10; unit suite green (1760 tests; the 13
test_sidecar_init /bin/sleep errors are pre-existing NixOS-local noise).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WBMWTEtQdJ4W5UrWuLHCck

bot_bottle/backend/docker/consolidated_launch.py

@@ -26,7 +26,7 @@ from ...egress import EgressPlan
 from ...git_gate import GitGatePlan
 from ...orchestrator.client import OrchestratorClient
 from ...orchestrator.gateway import GATEWAY_NAME, GATEWAY_NETWORK
-from ...orchestrator.lifecycle import OrchestratorProcess
+from ...orchestrator.lifecycle import OrchestratorService
 from ...orchestrator.registration import registration_inputs
 from .gateway_net import next_free_ip
 from .gateway_provision import deprovision_git_gate, provision_git_gate
@@ -92,7 +92,7 @@ def launch_consolidated(
     git_gate_plan: GitGatePlan,
     *,
     image_ref: str = "",
-    process: OrchestratorProcess | None = None,
+    service: OrchestratorService | None = None,
     gateway_name: str = GATEWAY_NAME,
     network: str = GATEWAY_NETWORK,
 ) -> LaunchContext:
@@ -100,8 +100,8 @@ def launch_consolidated(
     bottle, and provision its git-gate state. Returns the agent's attach
     context. Raises `ConsolidatedLaunchError` (or the primitives' own errors)
     if any step fails — the caller tears down on failure."""
-    process = process or OrchestratorProcess()
-    url = process.ensure_running()
+    service = service or OrchestratorService()
+    url = service.ensure_running()
     client = OrchestratorClient(url)
 
     cidr = _network_cidr(network)