Distillation

Date: Sep 8, 2026

• 🟡 (04:17) User asked to implement a minimal secure Go PTY supervisor and fixed launcher exclusively under /home/byk/.local/share/opencode-v2-pilot/supervisor.
• 🔴 [enforced-scope] (04:17) User prohibited editing repository files, the current plugin, system units outside /home/byk/.local/share/opencode-v2-pilot/supervisor, and prohibited starting or installing services.
• 🔴 [specified-code-style] (04:17) User required tabs and gofmt; pinned Go modules may be fetched.
• 🔴 (04:17) Supervisor socket is intended to be root-owned at /run/opencode-pty/supervisor.sock.
• 🔴 (04:17) User required every socket connection to be authenticated using SO_PEERCRED plus SO_PEERPIDFD when available, with exact equality to systemd’s current MainPID for fixed unit opencode-v2.service, exact expected cgroup, and ActiveState=active; authentication must fail closed without pidfd.
• 🔴 (04:17) User required one SOCK_STREAM connection per PTY with bounded binary framing.
• 🔴 (04:17) User required secure SCM_RIGHTS transfer of an approved cwd descriptor from the authenticated client and verification by comparing st_dev/st_ino metadata.
• 🔴 (04:17) User required a fixed launcher that receives the cwd fd, calls fchdir, uses clearenv and a fixed environment, then execs /usr/bin/script with strictly encoded argv.
• 🔴 (04:17) User required a maintained Go D-Bus/systemd library and direct StartTransientUnit only if its API can pass stdio file descriptors and properties correctly; the implementation must stop and report a blocker rather than hand-roll or weaken requirements if maintained libraries cannot soundly transfer transient-unit file descriptors or satisfy another requirement.
• 🔴 (04:17) User required monitoring structured systemd fields Result, ExecMainCode, and ExecMainStatus, plus unit removal.
• 🔴 (04:17) User required generated random 128-bit unit names using a fixed grammar; clients must never supply unit names.
• 🔴 (04:17) Every transient unit must use User=byk, Group=byk, NoNewPrivileges, UMask, KillMode=control-group, TERM/KILL behavior, TimeoutStopSec, optional RuntimeMaxSec, OOMPolicy=kill, Delegate=no, BindsTo/After the supervisor, masked Docker and system/user D-Bus sockets, and dedicated slice opencode-pty.slice.
• 🔴 (04:17) User prohibited inheriting environment and prohibited accepting systemd property names, unit names, or paths from the client.
• 🔴 (04:17) User required explicit bounds on sessions, frames, input, output, and backpressure.
• 🔴 (04:17) User required stopping a session unit by its generated name and awaiting inactivity on client disconnect, protocol error, or supervisor shutdown.
• 🔴 (04:17) User required startup orphan cleanup based on strict unit-name grammar and verified BindsTo.
• 🔴 (04:17) User required service and slice unit files to be included inside /home/byk/.local/share/opencode-v2-pilot/supervisor.
• 🔴 [requested-tests] (04:17) User requested unit and protocol tests that do not require root.
• 🔴 [requested-validation] (04:17) User required running gofmt, go test, race tests if practical, go vet, and a build, then reporting exact files/results and remaining root-only acceptance tests.
• 🟡 (04:17) Initial filesystem inspection showed /home/byk/.local/share/opencode-v2-pilot contains cache/, config/, CUTOVER.md, data/, opencode-v2.service, state/, and supervisor/.
• 🟡 (04:17) Initial filesystem inspection showed /home/byk/.local/share/opencode-v2-pilot/supervisor was empty.
• 🟡 (04:18) Environment inspection found Go go1.22.2 linux/amd64, GOPATH /home/byk/go, OS linux, architecture amd64, and kernel 6.8.0-117-generic.
• 🟡 (04:18) Environment inspection found systemd 255 (255.4-1ubuntu8.17) with unified cgroup hierarchy.
• 🟡 (04:18) Dependency investigation encountered a compatibility blocker for the latest maintained module: while loading retractions for github.com/coreos/go-systemd/v22@v22.0.0, Go reported github.com/coreos/go-systemd/v22@v22.7.0 requires go >= 1.23, but the environment runs Go 1.22.2; no library/version decision was yet recorded.
• 🟡 (04:18) Attempt to fetch https://www.freedesktop.org/software/systemd/man/latest/org.freedesktop.systemd1.html returned HTTP status 418.
• 🟡 (04:18) Local systemd documentation lookup produced systemd.exec(5) content, including structured service-result values and systemd process exit-code mappings; command output was truncated and the full output was saved at /home/byk/.local/share/opencode/tool-output/tool_07f3d20dd001KuT5ZrRbGlPJIB.
• 🟡 (04:18) A file search returned No files found; subsequent local man-page processing emitted multiple troff table-width and line-breaking warnings.