refactor(smolmachines): drop obsolete docker-sidecar helpers

bot_bottle/backend/smolmachines/bottle_plan.py

@@ -1,10 +1,8 @@
 """SmolmachinesBottlePlan — concrete BottlePlan for the smolmachines
 backend (PRD 0023).
 
-Slug + bundle docker subnet / gateway / pinned IP + smolvm
-machine name + agent `.smolmachine` artifact + per-bottle guest
-env. Provisioning fields (CA cert path, prompt path, etc.) land
-in chunk 4."""
+Slug + legacy bundle network coordinates + smolvm machine name +
+agent `.smolmachine` artifact + per-bottle guest env."""
 
 from __future__ import annotations
 
@@ -23,9 +21,10 @@ class SmolmachinesBottlePlan(BottlePlan):
     `supervise_plan`, and `agent_provision` from BottlePlan."""
 
     slug: str
-    # Per-bottle docker subnet for the sidecar bundle container.
-    # The bundle runs at `bundle_ip` (always `.2`); the gateway is
-    # at `.1`. smolvm's TSI allowlist is set to `bundle_ip/32`.
+    # Legacy per-bottle bundle network coordinates. These remain on
+    # the plan while BundleLaunchSpec still carries the original shape,
+    # but the smolmachines launch path exposes the sidecar VM through
+    # host-loopback forwarders instead of a Docker bridge IP.
     bundle_subnet: str
     bundle_gateway: str
     bundle_ip: str
@@ -36,22 +35,10 @@ class SmolmachinesBottlePlan(BottlePlan):
     # `--smolfile` is mutually exclusive with `--from`, and
     # `--from` is the path that avoids the registry-pull race).
     guest_env: dict[str, str]
-    # Inner Plans for the sidecar bundle daemons. The same shape the
-    # docker backend uses — same `.prepare()` calls produced
-    # them — but our launch step doesn't populate the
-    # docker-specific network fields (internal_network,
-    # egress_network) because the smolmachines bundle isn't on
-    # docker's `--internal` + egress bridge topology; it's on a
-    # per-bottle bridge with a pinned IP. The unused fields stay
-    # at their dataclass defaults.
-    # Agent-side endpoints. On Docker Desktop the docker bridge
-    # IPs aren't reachable from the smolvm guest (TSI uses macOS
-    # networking; docker container IPs live in the daemon's VM),
-    # so the agent dials the bundle via host loopback +
-    # docker-published random ports. Empty at prepare time;
-    # launch populates these after bundle bringup via
-    # `dataclasses.replace`. Format: a `host:port` for git-gate
-    # (insteadOf URL prefix) + full URLs for proxy / supervise.
+    # Agent-side endpoints. Empty at prepare time; launch populates
+    # these after sidecar VM bringup via `dataclasses.replace`.
+    # Format: a `host:port` for git-gate (insteadOf URL prefix) +
+    # full URLs for proxy / supervise.
     agent_proxy_url: str = ""
     agent_git_gate_host: str = ""
     agent_supervise_url: str = ""