- Implemented \`applyDefaultServerConfig\` in \`Engine\` to apply \`serverProtocols\` to \`http.Server\`.
- Uncommented all calls to \`applyDefaultServerConfig\` in \`serve.go\`.
- Refactored \`SetProtocols\` and added internal \`setProtocols\` to ensure user-defined protocols are not overwritten by framework defaults in \`RunTLS\`.
- Added exhaustive tests in \`protocols_test.go\` to verify protocol inheritance and persistence.
- Created a detailed \`docs\` directory with Chinese documentation for all major features.
- Implemented \`BaseContext\` propagation in \`Engine\` to allow long-lived connections (like SSE) to receive shutdown signals.
- Added \`Engine.Context()\` to provide access to the shutdown context.
- Updated \`docs/sse.md\` with a guide on handling graceful shutdowns.
- Cleaned up temporary build/update scripts.
Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
