feat: reduce cargo-insta-update-snapshots tool verbosity

[Vaiz]

No description provided.

[Copilot]

Pull request overview

This PR reduces verbosity for the cargo-insta-update-snapshots MCP tool by switching it to run cargo test with INSTA_UPDATE and adding explicit output verbosity controls, while also slightly tightening workspace auto-detection behavior/logging.

Changes:

• Rework cargo-insta-update-snapshots to use cargo test + INSTA_UPDATE (adds force + output_verbosity, removes several prior cargo-insta-specific inputs).
• Update tool documentation (tools.md) to reflect the new inputs/behavior.
• Refresh insta snapshots for the updated command-line args.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tools.md	Updates the documented schema/inputs for cargo-insta-update-snapshots (adds force, output_verbosity, removes prior fields).
src/workspace.rs	Adds an early return + warning when the client lacks roots capability; minor cleanup in URI-to-path conversion.
src/tools/cargo_insta.rs	Implements the new cargo test + INSTA_UPDATE command building and adds verbosity/force options; updates unit tests accordingly.
src/tools/snapshots/rust_mcp_server__tools__cargo_insta__tests__cargo_insta_update_snapshots_nextest_runner_args.snap	Deletes snapshot for removed nextest/unreferenced args behavior.
src/tools/snapshots/rust_mcp_server__tools__cargo_insta__tests__cargo_insta_update_snapshots_manifest_path_args.snap	Updates expected args for --manifest-path flow (now includes --quiet, removes old cargo-insta args).
src/tools/snapshots/rust_mcp_server__tools__cargo_insta__tests__cargo_insta_update_snapshots_features_and_targets_args.snap	Updates expected args to match new default quiet behavior and removal of cargo-insta subcommand.
src/tools/snapshots/rust_mcp_server__tools__cargo_insta__tests__cargo_insta_update_snapshots_default_args.snap	Updates expected default args (now cargo test --workspace --quiet).
src/tools/snapshots/rust_mcp_server__tools__cargo_insta__tests__cargo_insta_update_snapshots_all_features_args.snap	Updates expected args (now includes --quiet, removes cargo-insta args).