Caster's Compendium v0.1.8-hotfix.2

Caster's Compendium v0.1.8-hotfix.2

This prerelease hotfix repairs card database setup when an artwork link
disappears from the upstream Speedrobo website.

Card artwork recovery

• Fall back to the version-controlled card image when an upstream artwork
  request fails, allowing setup to finish instead of stopping at the first
  missing image.
• Publish normalized card databases with immutable, catalog-owned artwork URLs
  so catalog consumers do not inherit unstable upstream links.
• Publish hosted catalog v3 with working artwork for every Passion Wing record.
• Add regression tests covering both the fallback download and stable catalog
  URL generation.

The upstream database continued to reference Passion-Wing.png after that
file was removed. Existing v0.1.8 installations could load a local database and
then request that stale URL before reaching the hosted catalog update check.

Compatibility

Fresh v0.1.8 installations can already use catalog v3. Installing this hotfix
also repairs existing installations automatically; deck files and settings are
not changed.

AI transparency

Hybrid identified and reported the production failure and authorized OpenAI
Codex to implement and publish this focused hotfix. See
AI_STATEMENT.md for the complete contribution
disclosure.

Release verification

The hotfix includes SHA-256 checksums, an SPDX software bill of materials, and
GitHub artifact attestations. Windows and macOS packages remain unsigned and
may display a first-launch security prompt.

v0.1.8-hotfix.1 was not published because its Arch package correctly rejected
an outdated checksum for the versioned manual page. This replacement uses a
new tag rather than moving or reusing the failed tag.