Drop CategoryTabs component, SkillTemplateTag type, icon/tags fields,
and UI_CONFIG from the fetch script. Upload folders now use the
kebab-case skill id (e.g. "skill-creator") instead of the display name.
Card shows the human-readable name from SKILL.md frontmatter while the
created folder uses the id for consistent naming.
Remove unused categories (Search, Security, Analysis) and add
real ones (Document, Design, Creative). Consolidate xlsx tags to
Document/Productivity and webapp-testing to Development only,
eliminating orphan tags with single-skill coverage.
Add fetch-skill-templates.ts script that clones anthropics/skills repo
and generates complete directory trees (scripts, references, assets)
for all 16 skills with base64 encoding for binary files, replacing
the previous single-SKILL.md-only approach. Generated files are
lazy-loaded per skill on user click.
