jakman85andClaude Opus 5 830983b791 test(l0): prove the dollar-collapse guard fires — and name the real envsubst
The implementation landed in the preceding WIP commit had never been executed.
This finishes it: the arithmetic is re-measured, the guard and its allowlist are
attacked, and the header's one factual error is corrected.

WHAT ENVSUBST ACTUALLY IS. The header credited `github.com/drone/envsubst`. The
pinned flux 2.4.0 binary in the dev image embeds
`github.com/fluxcd/pkg/[email protected]` — Flux's own fork of drone/envsubst
("This package is a fork of drone/envsubst", its README) — read straight out of
the binary with `grep -ao`. Same behaviour, different module; the header now says
so and says how to check, because a claim about a dependency that nobody can
re-derive is how the last wrong assumption survived.

RE-MEASURED, NOT ASSERTED. Every row of the DOLLAR-RUN ARITHMETIC table was
re-run through `flux envsubst` (flux 2.4.0, DEFINED=VALUE) and every row holds:
`$$`->`$`, `$$$`->`$$`, `$${D}`->`${D}`, `$$${D}`->`$VALUE` (odd run: the brace
is LIVE), `$$$${D}`->`$${D}`, `DO $$ x $$;`->`DO $ x $;`, and `$$${ARR[0]}` dies
with "missing closing brace" while `$${ARR[0]}` is fine. `--strict` output was
byte-identical to non-strict, exit 0 both ways (`cmp`) — strict mode is blind to
this whole class, which is why a source assertion is the only guard available.
The header now carries the 30-second reproduction, flagged to be re-measured on
any FLUX_VERSION bump.

END TO END ON THE REAL PATH. With the pre-16b7fcd manifest restored,
`kubectl kustomize apps/wave-0` emits `DO $$` — valid SQL, and exactly what the
`kubectl apply` verification saw — while the same stream through
`flux envsubst --strict` emits `DO $` and `$;` and exits 0. That two-command
contrast IS the incident.

THE GUARD IS NOT TRIVIALLY SATISFIABLE — 16 adversarial cases, all as intended,
run against a throwaway copy of the tree so nothing could be left behind:
  * an unmarked `$$` under a substituted path FAILS (DOLLAR-COLLAPSE); so do an
    odd `$$${...}` (DOLLAR-HALF-ESCAPED) and an even `$$$${...}` (OVER-ESCAPED);
  * a stale entry FAILS three ways — context no longer in the file, context that
    only covers an already-accepted `$${` escape and so excuses nothing, and a
    path that is not a file in the repo;
  * the allowlist cannot blanket-exempt a path: a 2-char context is rejected
    (<24), a `.*` wildcard is matched VERBATIM and therefore rejected as stale, a
    24-char context carrying no dollar run is rejected, a 4-char reason is
    rejected (<40) — and, the central case, a genuine entry covers only the span
    its context matches, so a SECOND `$$` elsewhere in the same file still fails.
    Two genuine entries for two real occurrences do pass, so the mechanism is
    usable rather than merely unsatisfiable;
  * the CLASS, not the instance: the pre-fix `DO $$ ... $$;` reconstructed in a
    NEW ConfigMap under apps/wave-2 fails at both dollar runs, and restoring the
    real pre-16b7fcd apps/wave-0/nextcloud-db.yaml verbatim fails the check at
    lines 384 and 391. The guard rejects the exact commit that broke production.
  The scratch fixtures lived only in the throwaway copy; `git status` on this
  branch stayed clean throughout, which is the other half of the last attempt's
  unfinished business.

LEGITIMATE USES EXIST AND STAY GREEN. 18 `$${...}` escapes (unifi cloud-init,
the gitea and nextcloud OIDC bootstrap scripts, two longhorn comments) pass
unremarked, and the 2 non-braced `$$` occurrences are the two allowlist entries.
Those two are shell comments inside block scalars, and `kubectl kustomize`
confirms the comment text really does survive into the stream envsubst reads —
so they are genuine, reaching content whose collapse is cosmetic, not a
hypothetical the allowlist was invented to excuse.

STILL NOT PROVEN, AND STILL NOT PROXIED: that a change was verified through a
substituting path. Which command a human ran is a fact about a shell session;
git stores the manifest, never the invocation, so it is not statically decidable
here and no honest formulation exists. Grepping commit prose for `kubectl apply`
would be satisfiable by rewording and would fire on the break-glass runbooks
whose whole content is that command. The answer is to move the proof off the
verification path and onto the source, which is what assertion (7) does.

No ci/l0.sh stage: the `conformance.home.k3s/scope: "whole-repo"` annotation is
what wires it, and whole-repo-invariants-wired fails the gate on a hand-written
stage.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-09-13 16:24:42 -05:00

home-network-k3s-impl

Implementation of the home k3s + Longhorn platform. This repo holds the reconciled artifacts (Flux config, Kustomize overlays, KubeVirt/Helm manifests, ServiceDefinitions, Kyverno policies, Chainsaw conformance tests, CI). It is driven by — and subordinate to — the read-only specification at ../home-network-k3s.

Rules (from the spec — non-negotiable)

  • The spec is read-only. Never modify anything under ../home-network-k3s. Implement against it; escalate spec problems, don't edit them (spec AGENTS.md §11, R-TEST-06).
  • Done = a green, reproducible, requirement-tagged conformance test — never "merged," never a manual demo (spec docs/14, agents/definition-of-done.md).
  • No work on main. Every change is a feature branch merged into main (spec CONTRIBUTING.md).
  • No plaintext secrets — SOPS-encrypted only (spec docs/07).
  • Phase discipline — only build what the active roadmap phase authorizes (spec roadmap/phases.md).

Layout

infra/          node provisioning: OpenTofu (Proxmox VE) + cloud-init + Ansible, and the
                pinned dev container that carries the whole toolchain
bootstrap/      one-time cluster bootstrap: Flux install, SOPS/age key, host Gitea
platform/       platform CONTROLLERS (Flux HelmReleases / operator bases): kyverno, cilium,
                longhorn, external-snapshotter, cert-manager, externaldns, gateway, coredns,
                vpn-egress, monitoring, cnpg, keycloak, oauth2-proxy, kubevirt
platform-config/ platform CONFIGS — the custom resources of the CRDs installed above
                (ClusterIssuers, Gateway, Kyverno policies, KubeVirt/CDI CRs, Keycloak CRs).
                Split out because CRs and the CRDs they use cannot apply in one pass.
apps/           application tier, reconciled as dependency-ordered WAVES:
                  wave-0/ wave-1/ wave-2/   rendered container apps (see DESIGN-waves.md)
                  vms/                      KubeVirt VirtualMachines (non-gating tier)
catalog/        ServiceDefinition entries (the onboarding surface) + render.py
schemas/        ServiceDefinition JSON Schema + renderer contract
clusters/       Flux entrypoints + dev/ and prod/ overlays
conformance/    Chainsaw behavior/conformance suite + harness + coverage report
ci/             the gate as scripts (lint · schema · Kyverno L0 · L1 render · decision)
.gitea/         Gitea Actions CI running that gate on an in-cluster runner

Status

Roadmap phases 0–6 are delivered and deployed on the dev cluster; Phase 7 (prod) is not open — clusters/prod is a design-only overlay.

Phase Delivered
0 Foundations ServiceDefinition schema + renderer, Kyverno L0 gate, conformance harness, CI
1 Cluster bring-up 3-node k3s HA on Proxmox VE (192.168.1.50/.51/.52), Cilium, Flux, SOPS
2 Platform core Cilium · Longhorn · cert-manager (LE-prod wildcard) · ExternalDNS · Gateway API · split-horizon CoreDNS
3 Egress / VPN ADR-0015 node-level OpenVPN split-tunnel + Cilium egress-gateway steering + host kill-switch
4 Observability kube-prometheus-stack · Loki · Alloy · Alertmanager. Velero still blocked on OQ-BKP; image-automation authored but disabled
5 IaaS KubeVirt + CDI on real nested KVM; live-migratable RWX VM storage. The UniFi VM runs, but UniFi OS Server is not yet installed in the guest
6 Identity + CI Keycloak (Operator + CNPG) · oauth2-proxy forward-auth · Grafana OIDC · kubectl OIDC SSO with group→RBAC · in-cluster Gitea Actions merge gate

Conformance: 36 / 51 requirements covered (70.6%), 15 gaps, 1 safety-critical gap (R-STATE-02, Longhorn node-loss). Regenerate with ./conformance/run.sh --coverage-only; the full report is conformance/_artifacts/coverage/coverage.md.

The running narrative — decisions, root causes, incidents, follow-ups — is DECISIONS-LOG.md. It, not this table, is the authoritative record.

Working on this repo

Everything the gate needs is baked into the pinned dev container — do not install the toolchain on the host:

infra/devcontainer/dev.sh build            # once
infra/devcontainer/dev.sh run make -C ci gate   # the same gate CI runs
infra/devcontainer/dev.sh                  # interactive shell (sops, flux, kubectl, tofu, ansible)

The container mounts the repo at /work, your age keyring, and the sibling spec repo read-only so the spec-immutability check can actually run. See infra/devcontainer/README.md.

A green run prints MERGE GATE: PASS. The L2/L3 conformance layers stay SKIPPED unless CLUSTER_AVAILABLE=true — the static gate never pretends to have run them.

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