v0.5.20

RidgeCode v0.5.20

TUI input

• Accept Windows ConPTY / host Enter events that arrive as a Release-only INPUT_RECORD.
• Idle Enter now submits a non-empty prompt and runs slash commands such as /help.
• Empty-buffer Enter remains a no-op, so a leftover key-up after the startup animation cannot start a task.

Verification

• cargo fmt --all -- --check
• cargo test --workspace --locked
• cargo clippy --workspace --all-targets --locked -- -D warnings
• Windows ConPTY: /help + CR produces help text; a non-command prompt + CR is submitted
• Windows release build, local installation, and ridgecode --version smoke test