v0.7.0

• Complete rewrite of pbir-format skill
  • Added visual-json.md consolidated reference (expressions, field refs, 30 visual types, formatting, analytics)
  • Added bookmarks, images, platform, version-json references
  • Added K201 example report (real PBIR report with 7 visual types, extension measures, bookmarks, themes)
  • Added tooltip pages, drillthrough, filter-pane (all 7 filter types), matrix features, small multiples, combo charts
  • Added task routing table (21 scenarios mapped to references) and validation rules
• Fixed ComparisonKind values, ThemeDataColor.Percent range, report.json structure, schema URLs
• Removed redundant json-structure/ folder and model-structure.md