feat(tui): handle native Windows console events

[Mineru98]

Problem

The Windows TUI helper needs to understand native console input directly so keyboard, mouse, resize, login, and helper lifecycle behavior can work predictably on Windows terminals.

Proposed change

• Add a Windows helper entrypoint and packaging scripts.
• Translate native Windows console records into the same event stream the TUI already consumes.
• Keep helper discovery, login input, and TUI driver sessions aligned with the Windows helper.

Acceptance criteria

• Windows console key, mouse, and resize events are converted into TUI events.
• The helper can be packaged and discovered on Windows.
• Existing IPC and TUI driver behavior continues to pass tests.

Verification

• git diff --check
• mix format --check-formatted on changed Elixir files
• cargo fmt --manifest-path rust/ourocode_ipc/Cargo.toml --check
• cargo test --manifest-path rust/ourocode_ipc/Cargo.toml -> 34 Rust tests passed across lib/bin/doc-test targets
• mix test test/ourocode/ipc/helper_port_test.exs test/ourocode/ipc/rpc_test.exs test/ourocode/runtime/mcp_daemon/process_test.exs test/ourocode/runtime/mcp_daemon_test.exs test/ourocode/runtime/stream_supervisor_test.exs test/ourocode/terminal/tty_driver_test.exs test/ourocode/terminal/tui_driver_session_test.exs test/ourocode/terminal/tui_input_loop_test.exs test/ourocode/terminal/tui_login_test.exs -> 89 passed

Closes #49
Refs #39