0.0.421-0

Added

• ACP clients can configure reasoning effort via session config options
• Click links in the terminal to open them in your default browser
• Support repo-level config via .github/copilot/config.json for shared project settings like marketplaces and launch messages

Improved

• Markdown tables render with proper column widths, word wrap, and Unicode borders that adapt to terminal width
• MCP elicitation form displays taller multi-line text input, hides tab bar for single-field forms, and fixes error flashing on field navigation

Fixed

• Streaming output no longer truncates when running in alt-screen mode
• Right-click paste no longer produces garbled text on Windows
• Shell command output on Windows no longer renders as "No changes detected" in the timeline
• GitHub API errors no longer appear as raw HTTP messages in the terminal when using the # reference picker