chore: Release hotdata-cli version 0.28.0

[eddietejeda]

Release 0.28.0

Version bump + changelog for the 0.28.0 release.

Included since 0.27.1

• feat(databases): --append mode for table loads (feat(databases): support append mode for table loads #276)
• docs: rename user-facing term "managed database" -> "instant database" (Rename user-facing term "managed database" to "instant database" #275)

Notes

• Bumps Cargo.toml, Cargo.lock, and the four skill doc version: fields to 0.28.0 (via cargo release).
• The Rename user-facing term "managed database" to "instant database" #275 rename landed as a non-conventional commit, so git-cliff did not fold it into the generated section automatically — its [Unreleased] entry has been merged into the 0.28.0 changelog section by hand.
• scripts/validate-changelog.py now exempts the [Unreleased] staging section from its "released sections must not be rewritten" check, since Unreleased is expected to be renamed into a concrete version at release time (previously this would have failed the changelog CI job on this PR).

After merge: scripts/release.sh finish tags v0.28.0 and triggers the dist/release workflow.

[claude]

nit: (not blocking) The exemption is the right call for the rename case, but it removes the only automated guard that [Unreleased] bullets survive a release. In this very PR the docs bullet from [Unreleased] had to be folded into 0.28.0 by hand — if that step were forgotten, or if a full git-cliff regeneration dropped it, this script would now pass silently.

A cheap way to keep both properties: instead of continue, assert each bullet line from the base [Unreleased] body still appears somewhere in the current file (any section), rather than requiring the section itself to persist. That allows the rename while still catching silent drops.

[claude]

Release mechanics check out: Cargo.toml/Cargo.lock and all four SKILL.md version: fields are bumped consistently with the pre-release-replacements list in Cargo.toml:75-81, and the folded [Unreleased] docs bullet is preserved verbatim in the new 0.28.0 section. The ver.lower() == "unreleased" comparison correctly covers both the ## [unreleased] git-cliff emits (cliff.toml:12) and the capitalized form in the file.

Two non-blocking notes inline (plus one that would not anchor: scripts/validate-changelog.py:74 — super nit, len(base_sections) now over-counts in the success message since the skipped [Unreleased] section is still included in "N section(s) preserved unchanged").

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!