v0.8.0 — disc-cuer refactor & lint CI

v0.8.0 — disc-cuer refactor & lint CI

A maintenance release on top of the stable v0.7.3 baseline: it pulls in the
refactored go-disc-cuer v0.4.0
engine, adds a dedicated linting pipeline, and refreshes dependencies. No
change to configuration, CLI behaviour or the validated setup matrix.

⬆️ Disc-cuer engine

• go-disc-cuer v0.3.0 → v0.4.0 ("the refactor"):
  new injectable Generator API (cue.New(cfg).Generate(...)), consumed by
  mpdplayer's CD-load path. Internals only — CUE generation behaves as before.
• Bumps discid 0.7.0 → 0.9.0 and pulls in mbtypes 0.4.0.

🐛 Fixes (inherited from go-disc-cuer v0.4.0)

• GNUDB: track titles wrapped across multiple TTITLE lines are now
  rejoined correctly.
• MusicBrainz: guard against empty release data when building disc info.
• Logs: the email-bearing hello= parameter is now redacted from logged
  GNUDB request URLs.

🏗️ CI & code quality

• New Lint workflow: golangci-lint + a gofmt check on every push and
  PR, with the ALSA / libdiscid / udev dev headers installed for the cgo
  dependencies.
• Lint cleanups: error strings lowercased per staticcheck ST1005, all
  Close() return values now checked (with a warning on failure), and the
  deprecated oto Player.Close() call removed.

📦 Dependencies

• jfreymuth/pulse 0.1.1 → 0.1.2
• golang.org/x/sys 0.42.0 → 0.47.0
• GitHub Actions group updates

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Full changelog: v0.7.3...v0.8.0

Install (Debian / Raspberry Pi OS):

curl -fsSL https://apt.odio.love/key.gpg | sudo gpg --dearmor -o /usr/share/keyrings/odio.gpg
echo "deb [signed-by=/usr/share/keyrings/odio.gpg] https://apt.odio.love stable main" | sudo tee /etc/apt/sources.list.d/odio.list
sudo apt update && sudo apt install mpd-discplayer