Add public AMF0 and RTMP protocol interfaces, update the RTMP proxy to use the accessor APIs, and cover AMF0 encoding/decoding with unit tests and examples.
Move internal/protocol to internal/server and update bootstrap imports to match the new package name. Sync the OpenClaw codebase map with the new module path.
Co-authored-by: chatgpt-codex-connector[bot] <199175422+chatgpt-codex-connector[bot]@users.noreply.github.com>