yoi/.yoi/tickets/00001KV0TJVN5/artifacts/implementation-report.md

Implementation report for Ticket 00001KV0TJVN5

Files changed:

• tests/e2e/src/lib.rs
  • Added a cached e2e binary provider using OnceLock.
  • Preserves YOI_E2E_BIN=<path> as the explicit override and skips the default cargo build provider in that path.
  • Default path runs ${CARGO:-cargo} build -p yoi --features e2e-test --bin yoi from the workspace root, then returns the direct target/{profile}/yoi binary path for PTY spawning.
  • Writes target/e2e-artifacts/binary-provider.json and emits diagnostics with provider, build command, and binary path.
  • Expanded command-failure diagnostics to include command args.
• tests/e2e/tests/panel.rs
  • Updated panel tests to use the fallible cached binary provider.

Validation:

• cargo fmt --check — passed.
• git diff --check — passed.
• cargo check -p yoi-e2e --all-targets --features e2e — passed.
• unset YOI_E2E_BIN && cargo test -p yoi-e2e --features e2e --test panel -- --nocapture — passed; default provider built the current yoi binary and PTY-spawned target/debug/yoi.
• YOI_E2E_BIN=/home/hare/Projects/yoi/.worktree/e2e-binary-provider/target/debug/yoi cargo test -p yoi-e2e --features e2e --test panel -- --nocapture — passed; override provider path used without invoking the default cargo-build provider.

Remaining gaps:

• None known.