What changed

• Added a new showcase page for a children-friendly animal video generation workflow.
• Included the generated HappyHorse MP4 sample and poster image under assets/showcase/.
• Updated the showcase index and sitemap so the new case is discoverable.

Workflow covered

Input animal word -> Qwen script planning -> HappyHorse prompt assembly -> bl video generate -> local media QA -> showcase publication.

The demo input is 狐獴, producing a 5-second warm fairy-tale animation sample with a cute meerkat holding a red apple.

Validation

• Parsed all Markdown front matter with Ruby/YAML.
• Checked new/modified text files for accidental local paths or API keys.
• Ran git diff --cached --check before commit.
• Verified asset references in the showcase page.
• Verified generated video with ffprobe: H.264, 1920x1080, 5.125s, about 3.4 MB.
• Extracted a frame with ffmpeg and manually checked the video visual direction.

Note: jekyll build was not run because this repo has no Gemfile and jekyll is not installed in the local environment. bl vision describe --video QA was attempted but blocked by the account's AllocationQuota.FreeTierOnly setting, so media QA used local tooling and manual frame inspection instead.