v4-pin (doc 06 §4.2): renderConf takes a pre-resolved IPv4 literal and writes
Endpoint=<ip>:<port> — never the DNS name, never AAAA. Resolver seam (A records
only, LookupNetIP "ip4"); multiple A → lowest (deterministic fleet-wide);
renderConf stays pure. Resolved IP cached: steady-state Apply = zero DNS + zero
execs. DNS failure keeps the last conf (never a teardown).
Watchdog (loop-only, so Apply's zero-exec steady state is untouched): handshake
age > wg_tunnel.stale_after_seconds (default 180) → re-resolve; IP changed →
re-render + restart (endpoint re-IP recovery); IP same → no churn (throttled
warn). Staleness read reuses wg show latest-handshakes (never dump).
Capability: wg-conf-install/enable/restart/handshake-read flipped Critical=true
(backups ride the tunnel from S4); apt-install + disable stay non-critical.
TestWGCapabilityCriticality pins the set.
Tests + red-proofs a/b/d all fire. No new sudoers grant; no wire/JSON change.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PSK5g6qYLknKj8u3QAFEr6
writeImage drops bash -c/printf for GuestExecStdin(img+\n -> tee /etc/felhom-controller-image);
new Runner.RunStdin/GuestExecStdin route stdin through the fenced sudo -n runner. 5 narrow,
auditable sudoers grants (no general pct exec, no bash -c) + capability manifest entries (Critical)
so the self-probe watches them and the build-test asserts coverage (companion red-proof). No
controller change; swap orchestration/rollback/state unchanged. Spike GO.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EPZ4GJ8L5Jqf8UiPwbn1kt
New internal/capability: Manifest of required sudo -n grants + Prober that LISTS each
via 'sudo -n -l' (never executes) + binary-exists check → ok/degraded snapshot on the hub
report. Build-time test asserts manifest⊆sudoers (red-proof: dropping lxc-info FAILs the
gate). Startup logs N/N ok + ERROR per degraded. Serve-degraded; no allowlist change.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EPZ4GJ8L5Jqf8UiPwbn1kt
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