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New shared scripts/instructions_gate.py, registered in controller_gates.py and agent_gates.py, never copied into a sibling repo (the reuse_refs_check.py precedent). 20 fixture tests, all asserting the effect: exit code AND that the message names the file and the reason. It is a consistency gate, not a budget gate, and the failure message says so. A /context reading measured the instruction files at 15k tokens against 869k free in a 1M window -- space is not the constraint, and a future reader must not re-derive the wrong reason. The 200-line ceiling is adherence guidance; a file nobody can hold in their head is where contradictions hide, and five were found here. Checks run against effective text (HTML comments stripped, because they are stripped before injection): the line ceiling; every .claude/rules/*.md declares paths: or an explicit unconditional: true; no component version literal; no TEMPORARY block carrying a past date; and the workspace-root CLAUDE.md is byte-identical to its versioned copy -- the live file sits outside any git repo, so that copy is its only version-controlled record. Two traps recorded so they are not reintroduced: a bare \d+\.\d+\.\d+ matches the first three octets of every IPv4 (the gate excludes dotted quads, or it fails on 192.168.0.180 in the agent's own file); and unconditional: true is NOT a Claude Code feature but this project's own marker. Workspace-root CLAUDE.md 208 -> 182 lines (142 effective), copy kept identical. The nine-instance invariant table moved into the felhom-testing skill, which triggers when writing or reviewing a test; all three directive bullets stayed in the core. felhom.eu/CLAUDE.md got surgical corrections only and is knowingly still over the ceiling at 227 effective lines -- closing it needs the restructure R-229 defers, said plainly rather than quietly absorbed. CONTEXT.md gains standing ruling S-35. OPEN-ITEMS.md gains R-229. Docs only -- no Go, no version bump, nothing built or deployed. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JJc8sAGRWmavP3rMtdpkr2
183 lines
11 KiB
Markdown
183 lines
11 KiB
Markdown
# CLAUDE.md — `/mnt/5_hdd/felhom.eu/git` workspace root (DooPlex)
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## What this workspace is
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A parent folder holding the felhom sibling repos. Most are one logical product — **Felhom**, a
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managed home-server service for Hungarian households. (Any non-felhom repo is unrelated; ignore
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unless asked.)
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**Claude Code runs HERE, on DooPlex (192.168.0.180), as `kisfenyo`.** Builds are local; the Proxmox
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host is one SSH hop. Run CC inside tmux so sessions survive SSH drops: **`tmux new -A -s cc`**.
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- **Hub** — operator backend on k3s (`hub.felhom.eu`), in `felhom.eu/hub/`.
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- **Host agent** — one per Proxmox host, operator-tier, owns all Proxmox interaction: `felhom-agent/`.
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- **In-guest controller** — one per customer LXC, Docker-only: `felhom-controller/`.
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- Also: `app-catalog-felhom.eu/` (app templates), `homelab-manifests/` (DooPlex k3s).
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Each repo's own `CLAUDE.md` and `.claude/rules/` load when you touch files there. The four Felhom
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skills are installed from `felhom.eu/skills/` with `python3 felhom.eu/scripts/install_skills.py`
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(symlink — repo edits are live immediately).
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## This host is production infrastructure
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DooPlex runs Gitea, the container registry, k3s + Longhorn, PBS, and the hub. Treat it accordingly:
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- NEVER run `docker system prune`, `docker image prune -a`, or any global Docker cleanup here.
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- NEVER touch k3s data dirs, Longhorn mounts, PBS datastores, or Gitea storage. Workspace is
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`/mnt/5_hdd/felhom.eu/` — stay inside it plus `~/build` symlinks/dirs.
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- Destructive disk/guest operations belong to felhom-pve via the agent — never on this host.
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- Do not run Claude Code with permission prompts disabled on this host.
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- Watch disk headroom before large builds: `df -h /mnt/5_hdd /` — abort if either is >90%.
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## Artifact taxonomy (it prevents the "what do I do?" stall)
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The planning/architecture assistant (in claude.ai, "project Claude") produces files with distinct
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roles. **A file being open in the editor is NOT an instruction. If no task is stated, ask.**
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- **`TASK.md` / `TASK-*.md`** — a spec for **you (Claude Code) to implement**. Implement it when it is
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placed as `TASK.md` at a repo root, or when explicitly told "implement <file>". Then push, update
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`CHANGELOG.md`, and write the repo's `REPORT.md`.
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- **`RUNBOOK-*.md`** — an operational procedure. CC executes every step it has access and capability
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for, live hosts included (CC has root@felhom-pve SSH + the felhom-agent token). Mark a step HUMAN
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only when it genuinely needs physical presence, a real-world decision, or credentials CC lacks.
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**Do not decline a whole procedure because it touches a live host or a privileged token.** Confirm
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before irreversible ops on real customer data; demo scratch guests are fair game.
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- **Validation/review** — checking a push against a spec's criteria is **project Claude's** job, not
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yours, unless asked.
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## Standing rules — each earned by a real failure (R-96)
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1. **Never combine a test run and a commit in one command.** A combined command has ONE exit code and
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the interesting one gets swallowed. Run the suite, read `rc`, *then* commit.
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2. **A "no access" claim must list what was tried.** "No access" is unfalsifiable unless it names its
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attempts.
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3. **An absent log line is not evidence of correct behaviour.** Verify with a POSITIVE observable —
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something that MUST appear when the system is healthy. An empty log is equally consistent with
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"working" and "stopped entirely".
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4. **A recommendation that is not followed gets one line saying why.** Silence reads as agreement and
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the disagreement is lost.
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<!--
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R-96 incident record (committed 2026-07-27) — rationale, not directives.
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1. Three recorded occurrences; the worst pushed a red suite because `packages ok: 28` was read while
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rc=1 was not.
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2. Two wrong verdicts on 2026-07-27 alone: ep0 (declared unreachable after trying exactly one route
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— felhom-pve -> 10.77.0.1; DooPlex -> 167.233.158.164 worked and the project memory said so), and
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the storage-box API (api.hetzner.cloud 404s for every storage-box endpoint; api.hetzner.com/v1 is
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the real one, and the hub's own hetznerapi.go:3 records it).
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3. Earned twice on 2026-07-27: the R-88 watcher (an empty quiesce log could not distinguish a healthy
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loop from a dead one — retired in favour of the per-tier /backup/due polls in pveproxy/access.log),
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and a hub DB copy whose write had silently failed, returning a confident "0 events in window" from
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a file a day stale until its mtime was checked.
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4. Twice in the R-88/R-97 arc a review point was absorbed rather than argued: R-84 was folded into
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R-82 without a word, and R-97a's operator-only guard was dropped while the claim it was meant to
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enforce got committed as a comment — which is how a false guarantee shipped and survived a release.
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-->
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## Shared conventions
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- **Push to `main` directly** — no feature branches.
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- **Versioning** via build-time ldflags (`-X main.version`/`-X main.Version`); bump on meaningful
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changes + a CHANGELOG entry.
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- Code quality: double-check for bugs/edge cases; add debug logging; **ask rather than guess** when
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you'd otherwise need to invent input or output.
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> **Clean-tree gate before any build:** `git status --porcelain` must be empty and
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> `git rev-parse HEAD` must equal `git rev-parse origin/main` in the repo being built. An unpushed
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> change does not exist — never build a dirty or unpushed tree. The `git pull` in the build step
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> stays (it is a no-op when you work in this tree, and load-bearing if anything was pushed from
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> elsewhere).
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> **In every repository where you make a change, update both files in that repo:**
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> - **`CHANGELOG.md`** — a cumulative log of **all** changes; newest entry on top.
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> - **`REPORT.md`** — **overwrite** with a summary of the **most recent** implementation (or
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> significant validation/operational run) only; not cumulative.
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>
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> **Never write secrets** — tokens, passwords, private keys, API keys — into `CHANGELOG.md`,
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> `REPORT.md`, or any committed file. Reference them as "stored out-of-band" instead.
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## Live validation — no browser here
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**`claude-in-chrome` is NOT available on DooPlex.** The standard method is endpoint-level: invoke the
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exact endpoint the UI invokes (no server logic is skipped, only rendering) and say which method was
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used. Strict end-to-end UI coverage is a manual click-through by the operator.
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## Access
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Local (this host): repos `/mnt/5_hdd/felhom.eu/git/<repo>`, build dirs
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`/mnt/5_hdd/felhom.eu/build/felhom-{controller,hub,agent}`, `sudo kubectl`, Go toolchain, Docker
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build+push to `gitea.dooplex.hu/admin/`.
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**Host addresses, routes, break-glass and per-node facts:**
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`felhom.eu/documentation/operations/nodes.md` — the single home. Do not restate them elsewhere.
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**Which box do I break?** → `felhom.eu/documentation/runbooks/target-selection.md` — the tiers, and
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per machine what is freely permitted / needs care / forbidden, each with its reason. Read it before
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picking a machine for a drill, a destructive test or a throwaway VM. **A task that needs a victim
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names one; an absent fence is not permission.** DooPlex is **Tier 2 — precious**: it *is* the recovery
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chain, and never a drill target.
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**Component versions are not recorded in any inventory doc** — agent/controller/hub versions change
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several times a day and the fleet is not uniform. Ask the hub's `/hosts` + `/configs`, or
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`felhom-agent --version` / `pct exec <vmid> -- docker ps` on the box.
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## Memory
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Project memory lives at `/mnt/5_hdd/felhom.eu/git/.claude-memory/`, surfaced via
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`~/.claude/projects/-mnt-5-hdd-felhom-eu-git/memory` (symlink); `MEMORY.md` is the index. Memories
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reflect what was true when written — **verify a named file/flag still exists before acting on it.**
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## Presence is not success
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A timestamp recording an **attempt** must never be read as evidence of a **result**. Where a status
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field travels alongside a timestamp, the verdict consults both — or the timestamp records only
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successes. Ask of any timestamp: *what exactly must have happened for this to be set?* If the answer
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is "we tried", it cannot answer "did it work".
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**Corollary:** when a verdict changes which field it counts from, the alarm text has to change with
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it. Leaving the message reading `last run 8h ago` while alarming on a six-day-old success turns a true
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alarm into one the operator dismisses.
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<!--
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Two instances. F-CRIT-2: a phantom snapshot's ctime set tier freshness — an aborted 1-byte upload
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made the tier look backed up. R-100: LastRun is written on failure, so a nightly-failing offsite tier
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kept the staleness clock fresh forever. Both found by asking of a timestamp what must have happened
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for it to be set.
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-->
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## A comment asserting an invariant needs a test pinning it, or it is a wish
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**Nine instances in this project have shipped guarantees the code did not provide** — each survived
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review because the comment read as settled, and three were caught only on live hardware. The case
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table is in the **`felhom-testing`** skill, which loads when you write or review a test, harden a
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guard, or fix a bug.
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- If a comment states an invariant, **name the test that pins it**, or write one.
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- If an invariant has a stated dependency (*"if either invariant changes, revisit this"*), that is not
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a safeguard — nobody revisits. Pin it with a test that fails when the dependency moves.
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- Prefer a test that asserts the **consequence** (does the alarm fire?) over one that asserts the
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**mechanism** (does suppression expire?). R-97b's Scenario F proved the mechanism and the
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consequence was still broken.
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<!--
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LEGACY: WINDOWS WORKSTATION — kept so the old environment can be revived; not the current setup.
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- Repos were in E:\git\ (/e/git/ in Git Bash); this file lived at E:\git\CLAUDE.md.
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- SSH binary had to be SSH=/c/Windows/System32/OpenSSH/ssh.exe — Git Bash's /usr/bin/ssh lacks
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access to the Windows SSH Agent and fails silently. Every remote command was
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$SSH kisfenyo@192.168.0.180 "..."; details in felhom-controller/docs/vscode-ssh-fix.md.
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- pct exec over SSH needed export MSYS_NO_PATHCONV=1 (MSYS mangled /-paths).
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- Agent deploy was a two-hop copy: build on 180 -> scp to the Windows box (local path needed
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cygpath -w) -> scp on to felhom-pve. Beware CRLF when scp-ing config files through Windows.
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- Skills were installed as Windows junctions (mklink /J) rather than POSIX symlinks.
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- claude-in-chrome browser automation WAS available there (attaching only to sessions started after
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the bridge connected).
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THIS FILE'S SHAPE (2026-08-06, instruction-trim task): core + path-scoped rules. Removed here and
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rehomed, not lost — the per-repo guidance list (those files load on their own), the skills roster
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(already resident in the skill listing), the host table (nodes.md is the single home), the "(119
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files)" memory count (derivable and wrong — 158), and the nine-row invariant table (felhom-testing
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skill). Full accounting: felhom.eu/documentation/audits/LEDGER-instruction-trim-2026-08-06.md
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An HTML comment is invisible to Claude and costs no context — verified 2026-08-06 with a control
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(both markers plain -> both seen) and a treatment (one marker commented -> not seen), twice.
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-->
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