Add python3 to the Daytona Dockerfile so MCP integration tests can run
their test server. Update the smoke workflow to verify fmt, clippy,
cargo test, typecheck, and bun test.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Set Daytona as the project-level default sandbox so workflows that don't
specify their own sandbox config run on Daytona automatically. Add a
smoke workflow that verifies the sandbox toolchain (git, rustc, bun).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>