verso-v1.0.11

Release adding GitHub Copilot Chat integration, MIME type output renderers, cell drag-and-drop reordering, collapsible notebook sections, webview cache-busting, C# stderr capture, and NuGet source registry resolution.

New: GitHub Copilot Chat Integration

• Verso now integrates with GitHub Copilot Chat through a @verso chat participant with slash commands and language model tools
• Tools include list, add, update, remove, run, runAll, listVariables, inspect, and getLanguages for full notebook manipulation from Copilot
• A host registry maps open notebooks to their host process and bridge so Copilot tools can locate and communicate with the correct notebook
• Registration is guarded at runtime so the extension still loads on VS Code forks (e.g. VSCodium) that strip Copilot APIs

New: MIME Type Output Renderers

• Cell outputs now render image/* types as base64 <img> elements, application/json as a collapsible syntax-highlighted JSON tree (first two levels expanded), and text/csv as a styled scrollable HTML table with header detection
• A sample notebook (samples/Notebooks/mime-types.verso) demonstrates all supported output types including text/html, SVG, images, JSON, CSV, Mermaid, and error outputs

New: Cell Drag-and-Drop Reordering

• Cells can be reordered by clicking and dragging on the left gutter, matching the interaction pattern in Jupyter and Polyglot notebooks
• A ghost element follows the cursor during the drag and a blue drop indicator line shows the target position
• Auto-scrolling activates when the cursor approaches the top or bottom edge of the viewport
• Gutter buttons (run, collapse) are excluded from the drag handle so they continue to work normally

New: Collapsible Notebook Sections

• Markdown cells starting with headings (# syntax or <h1>-<h6> tags) now show a collapse chevron in the gutter
• Collapsing a heading cell hides all subordinate cells until the next heading of equal or higher level, following the same section folding pattern as Polyglot notebooks
• Run button and cell index were moved from the toolbar to the left gutter for a cleaner layout

Improved: Webview Cache-Busting

• The VS Code extension now appends ?v=<version> to all Blazor WASM resource URIs using the version from package.json
• The loadBootResource callback also appends the version to framework asset requests (blazor.boot.json, blazor.webassembly.js)
• This ensures extension updates are never served stale cached assets from the webview's Service Worker cache

Improved: C# Stderr Capture

• Console.Error output during C# cell execution is now captured and surfaced as an error output alongside stdout
• The original Console.Error stream is saved and restored after each execution

Improved: NuGet Source Resolution

• Package resolution now includes sources registered via #i "nuget: <url>" directives when resolving #r "nuget: ..." references
• Sources from the NuGetSourceRegistry are retrieved from the execution context and added to the resolver before package lookup