v0.10.0

chore: upgrade dependencies and Go to 1.26

Bumps klauspost/compress to v1.20.3 (fixes CVE-2026-63209) along with
client_golang 1.25.0 and other deps. CI now uses Go 1.26 to match go.mod.
Documents running Go via the `go` toolbox in CLAUDE.md.

v0.9.0

feat: add since-last-backup metric to per-archive collection panels

Mirrors the "Since last backup" column from the summary tables, placed
before the existing "Last collection" stat in both the Borg and Restic
per-repository rows.

v0.8.0

feat: move Archive duration panel to the far right

Applies to both the Borg and Restic archive rows.

v0.7.0

style: realign README markdown tables

Whitespace-only column realignment, no content change.

v0.6.0

feat: add restic support, rename to backup-exporter

Adds a second collector for restic-backed repositories alongside borg,
with full parity including per-snapshot history metrics (restic_*).
Restructures the exporter around a tool-agnostic Collector interface,
two independent collection schedulers (borg/restic), and a shared
exporter_* metric family for collection-health/system-info that
replaces the old borg_last_collect_*/borg_system_info metrics.

Config moves from flags/BORG_REPOSITORIES to a YAML file listing
repositories with a type discriminant, supporting restic's
password/password_file/password_command auth conventions. This is a
breaking change with no compat shim.

Repo, Go module and binary renamed borg-exporter -> backup-exporter to
reflect the multi-tool scope.

Fixes a pre-existing bug surfaced while restructuring: repo.Opts was
passed to exec.Command as a single argument instead of being split,
so multi-flag borg opts (e.g. "--lock-wait 5") would have been sent
to borg malformed.

Closes #8

v0.5.0

refactor: rework Grafana dashboard around archive history

The "last backup" and "repository size" timeseries graphs were mostly
useless at the dashboard's default 6h window (at most 1-2 data points
given the default 4h METRICS_REFRESH_INTERVAL). Replace them with:

- An "Archive history" table and five single-metric bar charts (files,
  duration, original/compressed/deduplicated size) driven by the new
  borg_archive_* metrics from #7, one bar per archive so trends are
  visible regardless of the time window.
- Truncated (10 char), 45deg-rotated x-axis labels on the bar charts,
  since archive names are long; full names remain in the tooltip.
- "Last collection duration" converted from a timeseries to a stat
  panel, matching its "Last collection"/"Last collection error"
  siblings.
- Dropped the now-redundant top "Last backup for $repository" age row
  (superseded by the Summary table's colored age column) and the
  repository-total size graphs.

Also renames the "deduplicated size" columns/panels/metrics docs to
"Unique Data Added": verified against borg's own semantics (and
confirmed empirically against a live repo) that this stat is not "the
backup's size after dedup" but the data exclusively owned by that one
archive relative to the repository's *current* state - order-dependent,
can read 0 for a large valid backup, and can shift for older archives
as newer ones are created. Documented this caveat in the README next
to the two affected metrics.

The separate long-term-trend dashboard idea (using the existing
prometheus-longterm datasource) is tracked in #9 instead.

v0.4.0

feat: add -borg-opts parameter

v0.3.0

feat: add log when retrying

v0.2.0

fix: update Makefile release target to default to minor

v0.1.2

feat: add commit pipeline, update release pipeline to add tests