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bastien 872079bafb feat(install): offer /tmp on disk + SSH memory guard, deploy cloudpex helper

/tmp is a RAM-backed tmpfs on Ubuntu (50% of RAM). Agent runs fill it: half
the RAM goes, then every temp-file creation fails with ENOSPC and shells
break. Swap does not lift the cap, so the fix is /tmp on disk.

End-of-install offers (Linux, [y/N], skipped without a terminal, idempotent):
- offer_tmp_on_disk: mask tmp.mount + etc/tmpfiles.d/tmp.conf (wipe at
  boot, 10-day purge, /var/tmp rule kept). Effective at next reboot.
- offer_ssh_memory_guard: the previous server's rules. ssh.service drop-in
  (OOMScoreAdjust=-1000, MemoryMin=256M) + earlyoom with --avoid sshd and
  --prefer node/java. MemoryMin covers sshd only; earlyoom is the real guard.

install_cloudpex deploys the NAS mount helper in the Linux block.
Docs: README steps 12-14 + table, CLAUDE.md layout + lint command.

2026-09-22 16:57:08 +02:00

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CLAUDE.md — config (personal dotfiles)

Project context for Claude. Global preferences in ~/.claude/CLAUDE.md apply on top.

What this is

Personal dotfiles repo. Archetype: dotfiles-meta (meta/config, not an application). Produces vim + bash configuration deployed by install.sh. Private/personal audience.

Public: no
Database: none
Stack: POSIX/bash shell scripts + vimscript
Distribution: git clone + ./install.sh (OS auto-detected)

Layout

remote-install.sh     curl|bash bootstrap: ensure git, clone/pull, run install.sh
install.sh            one-shot installer (OS auto-detected)
vim/vimrc             vim config (pathogen, molokai, syntastic, NERDTree)
vim/autoload/         pathogen loader (committed)
vim/colors/           molokai colorscheme (committed)
bash/bashrc-{linux,osx}          OS-detected bashrc
bin/{dt,dtach-router,claude-provider}   CLI scripts deployed to ~/.local/bin
etc/profile.d/disk-usage-warning.sh     login-time low-disk warning → /etc/profile.d (Linux only)
etc/tmpfiles.d/tmp.conf                 disk-backed /tmp cleanup rules (offer: /tmp on disk)
etc/systemd/ssh.service.d/override.conf sshd OOM-exempt drop-in (offer: SSH memory guard)
etc/default/earlyoom                    earlyoom args, spare sshd / kill node first (same offer)
cloudpex/{cloudpex,install.sh,README.md} on-demand CloudPex SMB mount helper → /usr/local/bin (FR docs)
.claude/{tasks,memory,audits}/   Claude working state

/tmp is a RAM-backed tmpfs on Ubuntu (50% of RAM): agent runs fill it, which is why install.sh offers to mask tmp.mount. Swap is not the fix (the cap and ENOSPC stay).

pymupdf/markdown_py are NOT tracked — they are pipx entry-point shims, recreated by pipx install PyMuPDF Markdown in install.sh. claude-provider reads $OPENROUTER_API_KEY from the env — never hardcode it (the original had a live key; it was scrubbed — see decisions/blockers).

Commands

Task	Command
Lint	`shellcheck .sh cloudpex/install.sh cloudpex/cloudpex bash/bashrc-`
Syntax check	`bash -n install.sh remote-install.sh cloudpex/install.sh`
Install	`./install.sh` (OS auto-detected)
Remote install	`curl -fsSL <raw>/remote-install.sh \| bash`

No build, no test suite. Lint = shellcheck.

Conventions

Shell scripts: #!/usr/bin/env bash, set -euo pipefail, quote all expansions, keep shellcheck clean.
Installer must stay idempotent (re-runnable without breaking state) and use $SCRIPT_DIR-relative paths.
bashrc files: tabs for indentation (existing style). Style nits (legacy backticks) tolerated — don't churn.
No secrets in any tracked file. Use placeholders if config ever needs tokens.

Known issues (see .claude/audits/ONBOARD_REPORT.md)

vim/vimrc GenerateClassC uses bare name instead of a:name → :ClassC errors (E121). Vim domain, not yet fixed.
bashrc files use legacy backticks (SC2006) — cosmetic.

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