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pastilhas e930586878 plugins declare the host binaries they need, and the installer checks
Offscale was self-sufficient. Music is not — it shells out to ffmpeg and
ffprobe — and the way it fails without them is the reason this is a check
rather than a line in a README.

It does not fail. Missing ffprobe means the indexer catches the spawn error
and returns a track carrying its filename and nothing else: no title, artist,
album, duration or embedded lyrics. It then walks the whole library, writes a
complete cache tree and reports success. Five swallowed catches, no log, no
counter, and the only tell is coversSaved: 0 in a report nobody reads.

So `osDependencies` is a manifest field: the binary to probe on PATH, why it
is needed, and a package name per package manager. The shape is taken from
scripts/setup-old/setup.sh rather than invented — probe the binary, case on
$PM — and the names are per-manager rather than canonical-with-overrides
because lib/packages.sh already recorded why that indirection was rejected.
Probing the binary is what makes "built-in on this OS" free: on PATH means the
package map is never consulted.

Four decisions worth naming.

Missing and uninstallable REFUSES the install, first, before a table is
created or a row written — so there is nothing to undo, and the alternative is
a plugin that installs, answers 200 and quietly produces nothing.

The status is on GET /api/plugins and rendered before the button, because the
owner is deciding whether to let the server run a package manager as root and
that needs answering first. Installing by hand and watching it flip to present
is the escape hatch on a machine without passwordless sudo.

Package names get a deliberately narrow regex and reach Bun.spawn as an argv
ARRAY, never a shell. Both halves are load-bearing: the regex means a
metacharacter cannot get there, argv means it would be an argument rather than
syntax if it did. Narrower than package managers actually accept — no `:`, no
`+` version pins — because a plugin needing one wants a conversation.

Success is OBSERVED, not inferred: after installing, the binaries are re-probed.
A package manager exiting 0 having installed something that does not provide
the binary is exactly the failure this exists to catch.

installCommand mirrors lib/packages.sh's pkg_install_now exactly, including
apt's non-interactive environment, so there is one definition of "install a
package" rather than two that drift. sudo always gets -n: under PM2 a password
prompt is not a slow path, it is a hang. brew never escalates.

Verified live. ffmpeg and ffprobe were absent on this machine all evening; the
page showed both missing with the exact root command, the install streamed
`dependencies: installing ffmpeg with apt` then `ffprobe, ffmpeg now on PATH`,
and X-Audio-Duration appeared on a stream response for the first time. The
refusal path was exercised against a temporary probe dependency: HTTP 400,
steps: [], reason named.

THIS CHANGED THE MACHINE: ffmpeg 6.1.1-3ubuntu5 is now installed via apt.

Found on the way: a manifest is read once per process. Discovery does
`await import()` and the module cache holds it, so editing a manifest changes
nothing until pm2 restart officer — including `outdated`. Cost ten minutes and
is now in the runbook.

bunx tsgo clean. 797 tests, 787 pass, 7 fail — the same seven, +25 new.
2026-08-15 02:33:18 +00:00
pastilhas 05eb947bd1 music is verified on the live server, and the runbook learns from it
Ran the whole table against platform.officer.dev rather than reasoning about
it. install / API / range requests / dock / permissions / disable / enable /
uninstall / db:push-while-uninstalled / reinstall / pm2 restart officer — all
pass, recorded in plugins/music/PLUGIN.md with the actual numbers.

Two results worth naming. The reinstall was a RESTORE: a favourite and a
playlist seeded before uninstall came back untouched, which is the whole point
of the barrel following directories rather than the install table. And
`bun db:push` while uninstalled said `No changes detected` with the rows still
there — the property that makes running push by hand safe at any moment.

Range survives the proxy hop: 206 with a correct Content-Range and exactly the
bytes asked for, 416 unsatisfiable, 400 on a path escaping the Music root.

Two findings from the machine rather than the code. ffmpeg and ffprobe are not
installed here, so X-Audio-Duration never appears and indexing would produce no
tags or covers — the manifest already says a host binary cannot be declared, and
now says it was checked. And ~/Music did not exist at all, so the library is
empty; the sidecar handles both absences and logs them rather than failing.

Music is left INSTALLED and enabled. It had been switched off since 2026-08-13,
so this restores it.

The runbook gains what generalises: map what the PLATFORM still needs from your
feature before planning the split, because two imports pointing the wrong way
dictated music's boundary rather than any judgement about what music is.
Offscale had none, which made the job look cleaner than it is. Also two new
traps — delete the app-store catalogue entry or the screen goes blank, and
compare test FILE COUNTS across a run, since that is the only thing that shows
a test which stopped being discovered.

The global-overlay question is recorded as answered: no. A shell slot for a
plugin-provided component reopens "there is no way to export a component", and
that rule is what the frontend contract rests on.

Seeded rows and the audio fixture removed; ~/Music deleted again.
bunx tsgo clean. 772 tests, 762 pass, 7 fail — all pre-existing.
2026-08-15 01:56:16 +00:00