# fsdy — the filesystem provider

Mounts a local directory at **`/fs`** in the crabidy library. The same
engine also powers the server-managed mounts `/queues`, `/bookmarks`,
and `/captures` — everything below applies to their on-disk format too.

## How it works

The provider walks one configured root directory. Every **directory**
becomes a queueable library node; every file ending in
**`.cbd-track.toml`** becomes a track; everything else (audio files,
covers, hidden entries) is invisible to the library. Listing order is
case-insensitive by file name — prefix files with numbers to fix an
order (the capture/bookmark writers use `0001`-style prefixes for
exactly this reason).

A track file carries the track's metadata plus a reference to the
playable thing:

```toml
title = "We Will Rock You"      # required
artist = "Queen"                # optional
duration = 122                  # optional, seconds

[album]                         # optional
title = "News of the World"
release_date = "1977-10-28"

# Exactly ONE of the following four:
[playable]
file = "we-will-rock-you.flac"  # local audio; absolute, or relative to
                                # this file's directory (relocatable)
# url = "https://example.org/radio.mp3"   # http(s) stream
# link = "/tidal/artists/1/2/3"           # another provider's track
# skipped = true                # no audio: a capture recorded its
                                # source as uncapturable; shown red,
                                # skipped by playback
```

Malformed track files are skipped with a warning; they never break the
listing. `link` playables resolve exactly one hop (a link to a link
fails at play time), which keeps cycles impossible.

## Configuration — `~/.config/crabidy/fsdy.toml`

```toml
# Absolute path of the directory to expose under /fs.
# Default: the platform music directory (e.g. ~/Music). When neither is
# available the /fs mount is disabled — the rest of the server runs on.
# root = "/home/me/music"
```

## The server-managed instances

`/queues`, `/bookmarks`, and `/captures` are fsdy instances over
`~/.config/crabidy/{queues,bookmarks,captures}/`, written by the server
(queue persistence, `w`, `W`) and readable/editable with any file
manager — they are just folders of the track files described above.
Their top-level folders can be renamed (`e`) and deleted (`d`) from the
TUI; `/queues/current` is the continuously persisted play queue and is
protected.