2025.12.28.33

🐛 Bug Fixes

• fix(ci): add missing source.extension.cs and DeployExtension property
• fix(ci): correct assetFiles path in publish manifest
• fix(ci): use absolute URL for README icon in marketplace
• fix(gutter): enable mouse events for tooltip
• fix(vsix): link icon and license from root resources
• fix(vsix): shorten description for marketplace display

🔧 Maintenance

• chore(branding): update extension icon
• chore(build): migrate from SLN to SLNX format
• chore(build): update solution and manifest metadata
• chore(ci): add LinkedIn notification to publish workflow
• chore(ci): add VS marketplace publish manifest
• chore(ci): add contributors workflow
• docs(claude): add VSIX development rules
• docs(readme): add emojis, badges, and visual styling
• docs(readme): simplify header and add contributors section
• docs(readme): update badges and add marketplace link