Agent Skill Catalog v0.3.6

What's changed\n\n- Batch missing GitHub repository discovery and require a unique high-confidence match before association.\n- Cache failed image lookups and compiled family patterns to make repeated refreshes faster.\n- Improve parent/child aggregation for Tavily, CloudBase, HyperFrames, and similar multi-Skill bundles.\n- Add independent detail-pane scrolling, illustrated category navigation, manual preview controls, and second-confirmation deletion.\n\n## Validation\n\n- 67 tests passed.\n- Install package validated and uploaded with SHA256 checksum.\n- GitHub launch and discovery audits report no blockers or warnings.