Cut 0.26.0

[blooop]

Cuts 0.26.0 with everything that had accumulated under [Unreleased], on top of
the four dependency bumps merged just ahead of it.

The cut

Same four files as every cut before it:

• rust/Cargo.toml — [workspace.package] version to 0.26.0, which is the
  single source both halves of the release read.
• rust/Cargo.lock — the five workspace crates and nothing else. Verified: no
  third-party dependency moved, so this is not a dependency update wearing a
  release's clothes.
• CHANGELOG.md — [Unreleased] stays as the stable heading, emptied, and the
  section it held becomes ## [0.26.0] - 2026-09-01.
• README.md — the conda badge and the dl --version example.

Minor rather than patch: the section carries five additions, not just fixes.

Checked before pushing

• scripts/changelog_frozen.py against this branch's actual base — all 65
  released sections untouched. The cut is the one edit shaped to pass it: a
  version present only on head.
• The release-notes awk in publish.yml extracts a non-empty ## [0.26.0]
  section, so the step that fails a release with "a release nobody can read is
  not a release" has something to read.
• cargo build --release then dl --version / aid --version — both report
  0.26.0, which is what publish.yml asserts against the built wheel.

One tidy-up

Drops an empty ### Fixed heading that two separate merges had each contributed
to [Unreleased], leaving the section with two of them and nothing under the
first. Removed now rather than frozen into a shipped release — once 0.26.0 is a
released section, changelog_frozen.py correctly refuses to let anyone clean it
up.

Dependency bumps this sits on

• #541 — Bump prefix-dev/setup-pixi from 0.9.6 to 0.10.2
• #542 — Bump actions/checkout from 4 to 7
• #543 — Bump docker/login-action from 3 to 4
• #544 — Bump prefix-dev/rattler-build-action from 0.2.38 to 0.2.39

Note that #544 moves rattler-build v0.65.0 → v0.68.0 underneath, and
conda-publish.yml has never run with it — this release is its first real
exercise, as is #543's GHCR login on devcontainer-prebuild.yml.

🤖 Generated with Claude Code

Summary by Sourcery

Release version 0.26.0 with the accumulated project changes and synchronized user-facing version metadata.

Enhancements:

• Prepare the 0.26.0 release by promoting the accumulated unreleased changes into a dated changelog section and removing an empty duplicate heading.

Build:

• Update the workspace and lockfile versions to 0.26.0.

Documentation:

• Update the README release badge and version example to 0.26.0.

[sourcery-ai]

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Cuts version 0.26.0 by updating the workspace and lockfile metadata, promoting the accumulated changelog entries into a dated release section, and synchronizing the README’s release references.

File-Level Changes

Change	Details	Files
Bumps the workspace release version to 0.26.0 and synchronizes generated package metadata.	Updates the single workspace version source. Refreshes the five workspace entries in the lockfile without third-party dependency changes.	rust/Cargo.toml rust/Cargo.lock
Promotes the accumulated unreleased notes into the dated 0.26.0 release section while preserving the empty Unreleased heading.	Adds the 2026-09-01 release heading and keeps all five additions and fixes under it. Removes the duplicate empty Fixed subsection before the release is frozen.	CHANGELOG.md
Updates user-facing documentation to identify the 0.26.0 release.	Changes the Conda badge version. Updates the dl --version example.	README.md

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.91%. Comparing base (a946365) to head (ec8c44e).

Additional details and impacted files

Flag	Coverage Δ
python	42.98% <ø> (ø)
rust	95.21% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
shipped code (rust)	95.21% <ø> (+<0.01%)	⬆️
harness and tooling (python)	42.98% <ø> (ø)

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