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CLAUDE.md — Project Instructions for Claude Code (felhom.eu)
Read automatically when Claude Code works in this repo. Stable orientation only — current state lives in
CONTEXT.mdand the tops ofhub/CHANGELOG.md/scripts/CHANGELOG.md/website/CHANGELOG.md, never here. Cross-repo orientation (the felhom system, artifact taxonomy, access): workspace-root/mnt/5_hdd/felhom.eu/git/CLAUDE.md; this file isfelhom.eu-specific. A versioned copy of that workspace file lives atdocumentation/runbooks/workspace-CLAUDE.md.
Project overview
This repo contains:
- Website (
website/) — static HTML at felhom.eu, served via k3s nginx + git-sync sidecar. - Hub (
hub/) — Go application (felhom-hub), the operator backend, on k3s athub.felhom.eu. - K8s manifests (
manifests/) — k3s deployment manifests for felhom-system services. - Architecture docs (
documentation/) — the authoritative design home for the whole Felhom system:architecture/01..05-*.md,proxmox-platform.md,tests/phase*-findings.md, runbooks, audits. Read these before designing. - Skills (
skills/) — the versioned source of the Claude Code skills (felhom-build-deploy,felhom-ui-design,felhom-testing,felhom-app-catalog); install/update withpython3 scripts/install_skills.py(symlink into~/.claude/skills/on POSIX, junction on Windows — either way repo edits are live immediately).
See README.md for full architecture/DNS/email/SEO docs. See TASK.md for the current task (if any).
See REUSE.md before writing new code.
The Felhom system (so the hub's role is in context)
Felhom is Proxmox-based, with a locked three-component model:
- Hub (this repo,
hub/) — operator backend. Authors operator intent; mirrors box reality; holds no data-plane role and never connects inbound to a box. - Host agent (repo
felhom-agent/) — one per Proxmox host; owns all Proxmox interaction. - In-guest controller (repo
felhom-controller/) — one per customer LXC; Docker-only.
Hub — architecture (version-free; current version = manifests/hub.yaml image tag)
The hub ingests two report streams — the agent's host-domain report (POST /api/v1/host-report, the
heartbeat/dead-man's-switch) and the legacy controller report (POST /api/v1/report, frozen until
the slice-10 cutover — do not modify) — plus structured controller events (POST /api/v1/event,
gated by allowedEventTypes). Around them: staleness/disk/storage-fill/leaf/capability monitor
checkers, the two-tier notification dispatcher (operator English / customer Hungarian, Resend,
cooldowns), the app-mail relay, customer-config + Day-0 artifact-manifest management (the checksum
trust root the host bootstrap verifies against), assets serving, and the password-gated operator web
UI. Package map, helpers, seams, extension points: REUSE.md (e.g. new event types must enter
allowedEventTypes + customerMessages together).
Code quality rules
- Always double-check generated code for bugs, logic issues, syntax errors.
- Handle edge cases without overcomplicating.
- Add debug capabilities (logging, verbose output).
- If you need more input or troubleshooting output, ask first — don't guess.
- Testing doctrine (non-hollow tests, red-proofs, seams): use the
felhom-testingskill. - UI/design work (tokens, gates, copy rules): use the
felhom-ui-designskill. - Logging: levels/English/no-secrets rules per
documentation/runbooks/logging-conventions.md(DEBUG = flow detail, INFO = state change + duration; logs are operator-tier English; keys never values — the hub's bundle secret-gate blocks violating pulls fail-closed).
Workflow & artifacts
The planning/architecture assistant ("project Claude", in claude.ai) writes specs and validates pushes; you (Claude Code) implement. A file being open in the editor is NOT an instruction.
TASK.md/TASK-*.md— a spec for you to implement. Then push and updatehub/CHANGELOG.mdand rootREPORT.mdper the convention below.RUNBOOK-*.md— an operational procedure. CC executes the steps it has access and capability for, including live validation on the demo nodes and the demo Proxmox host (CC has root@felhom-pve SSH + the felhom-agent token). Mark a step HUMAN only when it genuinely needs physical presence, a real-world decision, or credentials CC truly lacks.- Validation of a push against a spec's criteria is project Claude's job, not yours, unless asked.
- Browser automation is NOT available in the DooPlex environment (
claude-in-chromewas a Windows-workstation capability). Validate at the endpoint level — invoke the exact endpoint the UI invokes — and via render tests; say which method was used. The hub UI is operator-password-gated anyway, so render tests were already the method for UI changes. Strict end-to-end UI coverage is a manual click-through by the operator.
In every repository where you make a change, update both files in that repo:
CHANGELOG.md— cumulative log, newest on top (here: per-areahub/,scripts/,website/).REPORT.md— overwrite with the most recent implementation/validation summary only. Parallel sessions:REPORT.mdis overwritten, so two sessions working in this repo at once will clobber each other. The second session writesREPORT-<topic>.mdinstead and never touches the sharedREPORT.md.Never write secrets into any committed file — reference them as "stored out-of-band".
- Update
REUSE.mdif you added/changed/deprecated a shared helper or pattern (same commit). - Never
git add -Ain this repo — parallel sessions share the clone and it sweeps foreign WIP (the v0.47.0146d165incident: a red-proof-mutated guard got swept tomain). Stage explicit paths only,git pull --rebasebefore every push, and do not run two writing sessions on one clone (usegit worktreeif truly needed).
Tech stack (Hub)
- Language: Go (stdlib
net/http+html/template, no frameworks). DB: SQLite viamodernc.org/sqlite(pure Go). Auth: bcrypt + Bearer tokens + session cookies + CSRF. - Deploy: Docker on k3s (
felhom-systemns). Storage: Longhorn PVC at/data/(SQLite DB). - Config: YAML via ConfigMap at
/etc/felhom-hub/hub.yaml. Secrets via out-of-bandsecretKeyRef(never inline stringData — REUSE.md §3).
Environment & access
Claude Code runs on DooPlex (192.168.0.180, Debian 13, user kisfenyo) — the k3s node itself.
Repos in /mnt/5_hdd/felhom.eu/git/, build dirs in /mnt/5_hdd/felhom.eu/build/. kubectl and the
image build/push are local commands; felhom-pve is one SSH hop.
| Host | Access | Role |
|---|---|---|
| DooPlex (this host) | local — /mnt/5_hdd/felhom.eu/{git,build}/ |
Build + push images, sudo kubectl |
| Demo Proxmox host | ssh felhom-pve (root@192.168.0.162) |
pveum/pct + live Proxmox validation |
Legacy: Windows workstation. Until 2026-07-19 CC ran on Windows 11 with repos in
E:\git\, and every remote command neededSSH=/c/Windows/System32/OpenSSH/ssh.exe(Git Bash's ssh fails silently). Retained in case that environment is revived.
Build & deploy — Hub (GitOps via ArgoCD)
Full runbook: use the felhom-build-deploy skill. The load-bearing rules:
The whole cluster is GitOps via a single ArgoCD app felhom syncing this repo's manifests/
to felhom-system. Auto-sync is OFF — deploys are a deliberate manual sync. ArgoCD's source of
truth is the manifest:
- A code change + CHANGELOG bump deploys NOTHING. The running image changes only when
manifests/hub.yaml'simage:tag changes in git and the app is synced. - Pin explicit versions, never
:latest. Never barekubectl set image/kubectl apply(reverted on next sync). - The live image can lag the CHANGELOG when a bump was committed but the manifest/sync step never happened — reconcile via the manifest, not the changelog.
- Green gate before any hub commit:
go build ./... && go vet ./... && go test ./...inhub/.
Clean-tree gate before any build:
git status --porcelainmust be empty andgit rev-parse HEADmust equalgit rev-parse origin/mainin the repo being built. An unpushed change does not exist — never build a dirty or unpushed tree. Thegit pullin the build step stays (it is a no-op when you work in this tree, and load-bearing if anything was pushed from elsewhere).
Steps: commit+push code → cd /mnt/5_hdd/felhom.eu/build/felhom-hub && ./build.sh <VER> --push
(local) → bump manifests/hub.yaml tag + push → ArgoCD hard-refresh + sync (kubectl-patch method in
the skill, now local sudo kubectl) → verify Synced/Healthy + rollout + image + startup log.
Build & deploy — Website / Manifests
- Website auto-deploys via git-sync; just push to
main(live in 1–2 min). Runpython3 scripts/site_gates.pyafter ANY website change; new pages go into itsPAGESlist. Emergency edits: https://files.felhom.eu. Allwebsite/HTML is UTF-8 with BOM — preserve it. - Manifests are GitOps via the
felhomapp — commit tomain, then deliberate sync.
Key patterns
- Hub status logic: OK (report < 30m), WARN (30m–1h or health=warn), DOWN (> 1h or health=fail); host liveness thresholds shared between UI and checker (never invent a second definition).
- SQLite timestamps vary in format — always
parseSQLiteTime(). - Dashboard/detail auto-refresh every 60s via meta refresh. Geo-restricted to Hungary via nginx ingress annotation.
- Helpers, seams, extension points, traps:
REUSE.md— the map is maintained same-commit.