Port CodeRabbit CLI usage

[Finesssee]

Summary

• add the upstream CodeRabbit CLI usage provider to the Windows port
• run the local coderabbit usage command without a shell, with an optional CODERABBIT_CLI_PATH override, a 15-second timeout, and a 128 KiB combined output cap
• reject invalid UTF-8, control or escape sequences, signed-out output mixed with usage, incomplete reports, and malformed first values
• expose only sanitized transient usage details; do not persist credentials, report quota math, or project account identity
• register the provider in the Rust factory, CLI dashboard, Tauri bridge test, and frontend provider catalog/icons

This PR is based on the 0.61.0 transient provider detail carrier in #564 and is intentionally standalone for review.

Validation

• cargo test --manifest-path rust/Cargo.toml coderabbit -- --nocapture — 11 passed
• cargo test --manifest-path apps/desktop-tauri/src-tauri/Cargo.toml coderabbit_display_details_map_to_the_bridge_without_identity -- --nocapture — passed
• full Rust suite — 1,937 passed, 1 ignored, 0 failed
• cargo clippy --manifest-path rust/Cargo.toml --all-targets -- -D warnings — passed
• cargo clippy --manifest-path apps/desktop-tauri/src-tauri/Cargo.toml --all-targets -- -D warnings — passed
• cargo fmt --all -- --check — passed
• git diff --check — passed

Frontend Vitest was not run because apps/desktop-tauri/node_modules is absent; no dependency install was performed to preserve the low-storage environment. Validation used the existing single worktree and shared external Cargo target.

[coderabbitai]

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