---
model: gpt-5.6-sol
service: opencode
session: tractor-addr-unpacking
timestamp: 2026-08-26T02:24:34Z
git_ref: 2245f094
scope: code
substantive: true
raw_file: 20260826T022434Z_2245f094_prompt_io.raw.md
---

## Prompt

After committing the owned WireGuard interface lifecycle, the human
asked to continue with the next established incremental step.

## Response summary

Added a WG-specific composition context which owns one declared
bindspace and an ordered interface stack. It snapshots caller-owned
layer order before checkpointing, enters interfaces outermost-first,
and guarantees inside-out interface teardown before bindspace release.
Its inbound type shows the `(WGTunnelSpec, WGInterfaceConfig)` pairing
directly, and its docstring depicts the stack and unwind order.

## Files changed

- `tractor/discovery/_tunnel.py` - bindspace/interface stack driver.
- `tractor/discovery/__init__.py` - public layer and driver exports.
- `tests/discovery/test_wg_iface_lifecycle.py` - mutable-input,
  cancellation and nested teardown-order coverage.
- `ai/tpt-backends/03_wg_tunnel_bindspace.md` - implemented composition
  and ownership-order contract.

## Human edits

The human accepted and committed the preceding reviewed lifecycle
boundary, then explicitly requested the next step. That selected the
previously established bindspace/WireGuard composition boundary. In
staged review, the human requested an explicit interface-stack analogy
and a small ASCII diagram explaining entry and exit order. The human
then identified `WGInterfaceLayer` as an unnecessary single-use alias
which obscured the inbound tuple shape. The agent applied both
human-directed edits. The human accepted the fake lifecycle test as a
focused control-flow check which avoids pyroute2 overhead, while noting
their general preference for end-to-end coverage. No direct manual
source edits were observed.