Kill timed-out Kiro/Augment/Vertex CLI children

[tsouth89]

Summary

Desktop refresh wraps Provider::fetch_usage in tokio::time::timeout. Kiro, Augment, and Vertex spawned tokio::process::Command without kill_on_drop, so a cancelled fetch dropped the Child (default false) and left kiro-cli / auggie / gcloud running.

Those fetch-path commands now go through rust/src/host/tokio_cli.rs, which sets kill_on_drop(true). Augment's inner 15s deadline also kill+waits like command_runner::finish_child.

Related issue

Closes SBS-1078.

Affected areas

• Tray panel
• Settings UI
• Config file / settings persistence
• CLI
• Provider-specific behavior
• Installer / release packaging
• Startup / background behavior
• Documentation
• Other: shared tokio CLI helper used by Kiro / Augment / Vertex fetch paths

Validation

Hosted CI is the merge gate. scripts\local-check.ps1 is Windows-only and was not run in this Linux agent.

Hosted CI (commit a0c18940)

Workflow CI #32670530359 — success (5m6s)

Job	Result	Evidence
Frontend (required)	pass, 1m17s	worker.test.mjs: 10 pass / 0 fail; check-tauri-version-sync: OK; pnpm test: 93 files / 741 tests passed; pnpm run build: ✓ built in 1.71s
Rust / shared	pass, 3m27s	cargo fmt --all --check; cargo test --manifest-path rust/Cargo.toml: 1222 + 25 passed, 0 failed; cargo clippy --all-targets -- -D warnings
Rust / desktop	pass, 3m21s	cargo test --manifest-path apps/desktop-tauri/src-tauri/Cargo.toml: 631 passed, 0 failed; cargo clippy --all-targets -- -D warnings
Rust (required)	pass, 2s	aggregator: "Rust checks passed."

CodeQL Analyze (actions / javascript-typescript / rust) also passed.

github-advanced-security / "Code scanning AI findings" failed with SessionModelError: You are not licensed to use Copilot (run 32670531160). That is a Copilot Autofind license error, not a code finding, and it is not a required check.

Local (Linux, rustc 1.98.0)

cargo fmt --all --check                                          # exit 0
cargo test --manifest-path rust/Cargo.toml --lib host::tokio_cli # 4 passed
cargo test --manifest-path rust/Cargo.toml                       # 1189 + 32 passed
node --test worker.test.mjs
pnpm --dir apps/desktop-tauri test                               # 93 files / 741 tests
pnpm --dir apps/desktop-tauri run build                          # exit 0

Linux clippy -D warnings on the shared crate hits two pre-existing Windows-only unused items (secure_file.rs:824, updater.rs:514). Hosted Rust / shared on windows-latest is the clippy gate and passed.

UI / tray proof

• Not applicable

Notes for reviewers

• Sweep covered every tokio::process::Command in provider fetch paths (Kiro whoami + /usage, Augment account status, Vertex gcloud auth print-access-token). Sync std::process::Command probes (Kiro --version, Codex/Claude path checks) are unchanged.
• Do not merge unless a human asks.

  

Note

Kill timed-out Kiro, Augment, and Vertex CLI child processes via tokio_cli helpers

• Adds crate::host::tokio_cli with output and output_with_timeout async helpers that set kill_on_drop(true) on spawned processes; on timeout the helper force-kills and reaps the child
• Switches Augment's account-status fetch to output_with_timeout with its existing 15s deadline, mapping Error::TimedOut to ProviderError::Timeout and Error::Io to ProviderError::Other
• Switches Kiro login/usage and Vertex gcloud auth print-access-token fetches to tokio_cli::output, so canceled futures kill the child instead of leaving it running
• Behavioral Change: timed-out or canceled CLI child processes are now terminated and reaped instead of being orphaned; callers of tokio_cli must handle the new Error::TimedOut variant

^{Macroscope summarized a0c1894.}

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📥 Commits

Reviewing files that changed from the base of the PR and between 5bae231 and a0c1894.

📒 Files selected for processing (6)

• CHANGELOG.md
• rust/src/host/mod.rs
• rust/src/host/tokio_cli.rs
• rust/src/providers/augment/mod.rs
• rust/src/providers/kiro/mod.rs
• rust/src/providers/vertexai/mod.rs

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
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