feat(usage): add CLI provider quota queries

[jieyuexing]

Summary

• add opsail usage with a provider-oriented report; Codex and Grok are the current adapters
• expose the usage API through the Node facade and prepare the 0.3.0 release metadata
• run provider queries concurrently, bound Grok auth/response reads, and support Windows Codex command shims with owned process-tree cleanup
• document the extensible provider boundary and extend native CI coverage to opsail-usage

Testing

• cargo fmt --all -- --check
• cargo clippy --ignore-rust-version --workspace --all-targets --all-features --locked -- -D warnings
• cargo test --ignore-rust-version --workspace --all-targets --locked (278 passed locally)
• node --test test/*.test.js (87 passed)
• npm run pack:check (opsail@0.3.0)
• release binary and Host wrapper integration checks (13 passed)

The local Rust toolchain is 1.94, while the workspace declares 1.97. The GitHub native matrix installs 1.97 and includes macOS, Linux, Windows ARM64, and Windows x64; it also runs the Windows .cmd integration regression.